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vn-corexy.scad
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vn-corexy.scad
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/* Very Narrow CoreXY Printer (vn-corexy)
Created with goal: use as small space in width dimension as possible.
(C) 2020-2024 Marek Wodzinski <[email protected]> https://majek.sh
vn-corexy is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
You should have received a copy of the license along with this work.
If not, see <http://creativecommons.org/licenses/by-sa/4.0/>
*/
/* [head position] */
pos_x=0;
pos_y=100;
pos_z=290;
/* [hotend] */
extruder_type=6; // [0:BMG extruder, 1: Sailfin extruder, 2: TBG-Lite extruder, 3: Moli extruder, 4: MRF extruder, 5: bowden, 6: HGX Lite 2.0 extruder]
hotend_type=1; // [0: standard V6, 1: V6 heatink with CHC, 2: TZT V6 ]
hotend_block_sock=true;
level_probe=0; // [0: Ormerod, 1: BL-Touch ]
bltouch_side=1; // [-1:rigt, 1:left ]
/* [printed parts] */
printed_corners=true; // [false:no, true:yes]
printed_corners_nut=1; // [0:printed nut, 1:rotating t-nut, 2:sliding t-nut]
pp_color=[0.3,0.3,0.3]; // [0:0.1:1]
pp_color2=[0.3,0.3,0.8]; // [0:0.1:1]
printed_t8_clamps=true; // [false:no, true:yes]
bed_coupler=1; // [0:permanent mount, 1:Oldham couplings]
/* [render printable parts] */
render_parts=1; // [1:T-nut M5, 2: Joint 1x1, 3: Joint 2x2, 4: PSU mounts, 5: Power socket mount, 6: Control board mounts, 7: T8 clamp, 8: T8 spacer, 9: T8 side mount, 10: T8 rear mount, 11: Front joint, 12: Z pulley support, 13: Z motor mount, 14: Cable tie mount, 15: Z pulley helper for adjusting, 16: Front Z wheel mount, 17: Rear Z wheel mount, 18: Front bed frame joint and bed support, 19: Back bed support, 20: Side bed frame to T8 mount, 21: Back bed frame to T8 mount, 22: Z endstop mount, 23: Z endstop trigger, 24: MGN12 positioning tool, 25: X motor mount base, 26: X motor mount top, 27: Y motor mount base, 28: Y motor mount top, 29: Front pulley support left down, 30: Front pulley support right down, 31: Pulley spacer 1mm, 32: Pulley spacer 2mm, 33: Front pulley support left up, 34: Front pulley support right up, 35: Oldham T8, 36: Oldham middle, 37: Oldham top sides, 38: Oldham top back, 39: Left gantry joint for CF tube, 40: Left top of gantry joint for CF tube, 41: Right gantry joint for CF tube, 42: Right top of gantry joint for CF tube, 43: MGN9 on CF positioning tool, 44: X/Y endstop trigger, 45: Y motor pulley spacer, 46: Y endstop mount, 47: CF tube M3 nut jig, 48: Extruder carriage for MGN9, 49: V6 hotend shroud, 50: Hotend blower spacer, 51: Belt lock, 52: FFC cable stopper, 53: V6 clamp, 54: Hotend mount, 55: Nema14 mount to carriage, 56: Rear carriage cable clamp, 57: FPC mount to frame, 58: TH35 mount, 59: Step down mount, 60: MOS mount, 61: Relay mount, 62: Probe mount, 63: Part cooling 1, 64: Part cooling 2, 65: Side slot front, 66: Side slot middle, 67: Side slot rear, 68: Side slot rear PS ]
/* [tweaks/hacks] */
// increase up to 1 if your printer is perfect :-), decrease when joint doesn't fit into v-slot groove
vslot_groove_scale=0.98;
// 1 for perfect printer, little larger if nut doesn't fit into hole
tnut_nut_scale=1.03;
// make holes printable without supports
bridge_support=true;
// thickness of bridge layer if bridge_support is enabled
bridge_thickness=0.20;
// use upper ball bearings for T8 rods
t8_upper_bearings=true;
// Z bed stabilization
z_bed_stab = 0; // [0: v-slot wheels, 1: MGN7 linear rails]
// correction for offset on overextrusion or slicer problems impacting on XY dimensions
printer_off=0.10; // [0:0.01:0.2]
// nozzle/path width
print_width=0.4;
// hide FPC boards and FFC cables
hide_ffc=false;
// show detailed electronic modules
show_detailed_electronics=true;
/* [enclosure] */
// show enclosure
show_enclosure=false;
// double sided tape thicknes
tape_thicknes=0.8;
/* [build plate] */
build_plate_w=310; // (X)
build_plate_d=310; // (Y)
build_plate_mount_space=240; // space between mounting screws
/* [build volume] */
build_x=300;
build_y=300;
build_z=290; // not used anywhere
/* [frame] */
// extrusions family size
ext=20;
// extrusion type
ext_type=1; // [0:T-SLOT, 1:V-SLOT]
// minimum margin between build plate and frame
x_margin=10;
// X gantry build type
x_gantry_type=1; // [0: V-SLOT + MGN12, 1: Carbon fiber tube + MGN9]
// CF tube size
cf_tube_size=20.20;
// CF tube wall thickness
cf_tube_wall=1.15;
// internal stuff starts here
/* [Hidden] */
include <NopSCADlib/lib.scad>
use <TBG-Lite.scad>
use <HGX-Lite2/HGX-Lite-2.scad>
use <vn-lib.scad>
eps=0.01;
// hotend variables
hotend_w=50;
hotend_d=70;
hot_y_variants=[-52,-40,-40,-40,-40,-40,-40];
hot_y=hot_y_variants[extruder_type]; // distance from gantry to nozzle
hot_z=-4;
hotend_carriage_w=36;
probe_y=(hotend_type==0) ? -19:-13; // relative to hot_y
probe_z=hot_z-49.7+1.5; // triggers 3.75mm above surface, so 1.5mm above nozzle should be ok
probe_p1=[-13,-34]; // x,z coordinates of probe mount pillars on shroud
probe_p2=[-9.25,probe_z+10.25]; // x,z coordinates of probe mount on pcb
bltouch_z=-17;
cooling_fan_z=-7.5;
// calculated
base_w=2*ext+max(build_x+hotend_w,build_plate_w+x_margin); // frame width
base_h=ext*2+400+5; //height of frame base
base_d=build_plate_d+hotend_d+2*ext+50; // frame depth
top_d=base_d+50; // top left/right profiles length, 50 is just wild guess to allow some space between X carriage and rear of frame
//y_rail_l=base_d-2*ext; // MGN rails length
y_rail_l=400;
y_rails_from_front=2.5*ext;
y_rail_carriage=MGN12H_carriage;
x_rail_carriage=MGN12H_carriage;
//x_rail_l=base_w-2*ext; // 350
x_rail_l=375;
z_pulley_support=170; //distance from front to Z pulley support
z_belt_h=48; // space from bottom of frame to Z belt
pr20=pulley_pr(GT2x20ob_pulley); // radius of puller for belt calculations
//belt_x_separation=pulley_od(GT2_10x20_toothed_idler);
belt_x_separation=6; // horizontal separation between XY belts
belt_z_separation=15; // vertical distance between XY belts
beltx_shift=34+4; // distance from frame to bottom of X belt pulley
belty_shift=beltx_shift+belt_z_separation; // distance from frame to bottom of Y belt pulley
// gantry
gantry_belt_shift=12.5; // position in Y of belt on gantry relative to center of carriage
gantry_belt_pos=gantry_belt_shift+carriage_length(y_rail_carriage)/2; // belt position relative to front of carriage
// motors
xy_motor_pos=[21+2*ext,base_d+22]; // X motor position, for Y motor is mirrored
x_motor_z=beltx_shift-5; // X motor relative Z position
y_motor_z=belty_shift-5; // Y motor relative Z position
xy_o_pulley_pos=[ext/2,base_d+ext]; // motor outer pulley position
xy_i_pulley_pos=[ext/2+belt_x_separation,base_d]; // motor inner pulley position
elec_support=135; // distance for electronic supports from edge of frame (just guess, should be adjusted for real hardware)
// extrusion joint/corner, set for M5x12
joint_screw_len=12; // length of screw
joint_screw_d=5; // screw diameter
joint_screw_head_d=8.5; // head diameter
joint_screw_washer=10; // washer diameter
joint_screw_head_h=5; // head height
joint_extr_depth=5.5; // depth of screw in extrusion profile, 6 is fine for 2020
joint_in_material=joint_screw_len-joint_extr_depth; // amount of thread in joint
joint_space=joint_screw_len-joint_extr_depth+joint_screw_head_h+joint_screw_head_d/2; // minimum space from corner to allow put two perpendicular screws
t8_frame_dist=2.5; // distance from frame to start of T8 screw
t8_bb_offset=1.5; // space from start of T8 to ball bearing
m5_hole=4.75; // hole for direct M5 screw without tapping
m3_hole=2.75; // hole for direct M3 screw without tapping
m2p5_hole=2.25; // hole for direct M2.5 screw without tapping
m2_hole=1.75; // hole for direct M2 screw without tapping
m3_insert=3.8; // hole for M3 heat insert
bed_z=base_h-2*ext-28-pos_z; // bed Z position
// Carbon fiber tube private variables
cf_above_carriage=3.5; // height of cf above carriage
cf_from_front=5; // distance from front of carriage
// oldham coupler
oldham_w=ext*1.3; // width of oldham coupler
oldham_d=ext*1.2; // depth of oldham coupler (without margin)
oldham_lh=10.5; // height of low part
oldham_mh=8; // height of middle part
oldham_margin=2.0; // space between coupler and outer shape of printer
oldham_w_h=5; // wedge height
// FPC board
fpc_z=20+31.5; // FPC connector mount Z relative to top of frame
fpc_x=base_w-42; // X position of PFC connector on Y motor
fpc30_screws=[[-4,-17.5],[-4,17.3]]; // screw positions on FPC30 board
// optical endstop holes
optical_endstop_holes=[[2.75,5.1],[2.75+19,5.1]];
// handy rails vars
MGN9_holes=[[-8,-7.5],[-8,7.5],[8,-7.5],[8,7.5]];
// Extra stuff not in NopSCADlib
// 688RS ball bearings (8x16x5)
BB688=["688", 8, 16, 5, "black", 1.4, 2.0, 0, 0];
T8_BB=BB688;
// GT2 10mm belt
GT2x10=["GT", 2.0, 10, 1.38, 0.75, 0.254];
// GT2 10mm pulleys
GT2_10x20_toothed_idler2=["GT2_10x20_toothed_idler_14mm", "GT2", 20, 12.22, GT2x10, 10.9, 18, 0, 5, 18.0, 1.55, 0, 0, false, 0];
GT2_10x20_toothed_idler=["GT2_10x20_toothed_idler_13mm", "GT2", 20, 12.22, GT2x10, 10.9, 18, 0, 5, 18.0, 1.05, 0, 0, false, 0];
GT2_10x20_plain_idler=["GT2_10x20_plain_idler_13mm", "GT2", 0, 12.0, GT2x10, 10.9, 18, 0, 5, 18.0, 1.05, 0, 0, false, 0];
GT2_10x20ob_pulley=["GT2_10x20ob_pulley", "GT2OB", 20, 12.22, GT2x10, 10.9, 16, 7.0, 5, 16.0, 1.5, 6, 3.25, M3_grub_screw, 2];
// NEMA 17 23mm (pancake)
NEMA17S23 = ["NEMA17S", 42.3, 23, 53.6/2, 25, 11, 2, 5, 24, 31, [8, 8], 3, false, false, 0, 0];
XY_MOTOR = NEMA17_47;
Z_MOTOR = NEMA17_40;
// V-SLOT
V2020 = [ "V2020", 20, 20, 4.2, 3, 7.8, 6.25, 11.0, 1.8, 1.5, 1 ];
V2040 = [ "V2040", 20, 40, 4.2, 3, 7.8, 6.25, 11.0, 1.8, 1.5, 1 ];
vtr=9.16; // v-slot top tiangle width
// Large rocker switch
large_rocker = ["large_rocker", "Some large rocker found in drawer", 22, 28, 25, 30.5, 2.10, 21.3, 26, 15.8, 3, -1, 2.5, small_spades];
// v-slot wheel: [ 0:name, 1:outer dia, 2:hole dia, 3:bearing outer dia, 4:width, 5:roll dia, 6:flat width, 7: edge dia, 8: spacer dia ]
VWHEEL_L = [ "V-wheel large", 24.32, 5, 16, 11.1, 20.50, 5.1, 19.40, 8.5 ];
VWHEEL_S = [ "V-wheel small", 15.25, 5, 11, 8.90, 12.10, 6.1, 12.50, 7.0 ];
VWHEEL = VWHEEL_L;
// blower - Pengda other type
IF4020 = ["IF4020", "Blower IdeaFormer 4020", 40, 40, 19.3, 27.5, M3_cap_screw, 22, [21.5, 20], 3.1, [[37.7,2.60],[2.60,37.8],[37.7,37.8]], 29.3, 17, 1.4, 1.2, 1.15, 12.9];
PE4020BB = ["PE4020BB", "Blower Pengda Technology 4020 - BB", 40, 40, 19.3, 27.5, M3_cap_screw, 22, [21.5, 20], 3.1, [[37.7,2.60],[2.60,37.8],[37.7,37.8]], 29.3, 17, 1.6, 1.4, 1.5, 12.9];
hotend_blower=IF4020;
cooling_blower=PE4020BB;
// TH35 rail
/* 0 - thickness
1 - height
2 - hole dia (0 - no holes)
3 - hole lenght
4 - hole spacing (start to start)
*/
TH35_75_T1_20_NO_HOLES=[1.2, 7.5, 0, 0, 0];
TH35_75_T1_20_2HOLES=[1.2, 7.5, 5, 6, 64];
TH35_75_T1_0_SL6_5x15x25=[1.0, 7.5, 6.5, 15, 25];
TH35_TYPE = TH35_75_T1_20_2HOLES;
//TH35_TYPE = TH35_75_T1_0_SL6_5x15x25;
/*
// whole printer animation
$vpt=[ 195, 260, 250 ]; // viewport translate
$vpr=[ 51.50, 0.00, 360*$t ]; // viewport rotation 67.20
$vpd=1770.74; // viewport distance
$vpf=23.50; // viewport fov
/*
// carriage animation
$vpt=[ 191, 178, 455 ]; // viewport translate
$vpr=[ 110, 0.00, 360*$t ]; // viewport rotation 67.20
$vpd=210; // viewport distance
$vpf=35; // viewport fov
*/
// printer specific modules
module gt2_tooths(tooths,h=10,depth=1.38){
translate([1,depth-1.381,0]) linear_extrude(height=h)
union(){
for (i=[0:tooths-1]){
translate([i*2,0]) gt2_tooth();
}
// thicker base if required
if (depth!=1.38){
translate([-1.01,1.38-depth]) square([tooths*2+0.02,depth-0.75]);
}
}
}
module gt2_tooth(){
xr1=0.737;
difference(){
union(){
// tip
translate([0,1.38-0.555]) circle(r=0.555);
// sides
intersection(){
translate([0.4,0.63]) circle(r=1);
translate([-0.4,0.63]) circle(r=1);
translate([-1,0]) square([2,1.1]);
}
// near base
translate([-xr1,0]) square([2*xr1,0.63+0.15]);
// base
translate([-1.01,0]) square([2.02,0.63]);
}
// tooth base round
translate([xr1,0.63+0.15]) circle(r=0.15);
translate([-xr1,0.63+0.15]) circle(r=0.15);
}
}
module vn_logo(l_h){
linear_extrude(l_h) import("vn.svg");
}
module vslot_wheel(wheel){
// derlin part
side_h=(wheel[4]-wheel[6])/2;
color("#020202") difference(){
union(){
cylinder(d1=wheel[7], h=side_h, d2=wheel[1]);
translate([0,0,side_h]) cylinder(d=wheel[1], h=wheel[6]);
translate([0,0,side_h+wheel[6]]) cylinder(d2=wheel[7], h=side_h, d1=wheel[1]);
}
cylinder(d=wheel[3], h=wheel[4]);
}
// ball bearing
color("#f0f0f0") difference(){
cylinder(d=wheel[3], h=wheel[4]);
cylinder(d=wheel[2], h=wheel[4]);
}
}
module vtriangle(){
polygon([[-vtr/2,0],[vtr/2,0],[0,vtr/2]]);
}
module vslot_groove(length, depth=1.5){
scale([vslot_groove_scale,1,1]) linear_extrude(length) intersection(){
vtriangle();
translate([-vtr/2,0,0]) square([vtr,depth]);
}
}
module vslot2020(type, length, center = true, cornerHole = false) {
//! Draw the specified extrusion
color(grey(20))
linear_extrude(length, center = center)
difference(){
extrusion_cross_section(type, cornerHole);
translate([0,-10,0]) vtriangle();
translate([10,0,0]) rotate([0,0,90]) vtriangle();
translate([0,10,0]) rotate([0,0,180]) vtriangle();
translate([-10,0,0]) rotate([0,0,270]) vtriangle();
}
}
module vslot2040(type, length, center = true, cornerHole = false) {
//! Draw the specified extrusion
color(grey(20))
linear_extrude(length, center = center)
difference(){
extrusion_cross_section(type, cornerHole);
translate([0,-20,0]) vtriangle();
translate([0,20,0]) rotate([0,0,180]) vtriangle();
translate([10,10,0]) rotate([0,0,90]) vtriangle();
translate([10,-10,0]) rotate([0,0,90]) vtriangle();
translate([-10,10,0]) rotate([0,0,270]) vtriangle();
translate([-10,-10,0]) rotate([0,0,270]) vtriangle();
}
}
module ext2020(length){
if (ext_type==0) {
translate([-ext/2,ext/2,0]) extrusion(E2020, length, center=false);
echo("E20",length);
} else {
translate([-ext/2,ext/2,0]) vslot2020(V2020, length, center=false);
echo("V20",length);
}
}
module ext2040(length){
if (ext_type==0) {
translate([-ext/2,ext,0]) extrusion(E2040, length, center=false);
echo("E40",length);
} else {
translate([-ext/2,ext,0]) vslot2040(V2040, length, center=false);
echo("V40",length);
}
}
module tnut_m5(){
t_len=11;
t_tongue=0;
difference(){
translate([-t_len/2,-5,0]) rotate([90,0,90]) linear_extrude(t_len) polygon([ [0,0], [2,0], [2,-t_tongue], [8,-t_tongue], [8,0], [10,0], [10,1.9], [8,3.8], [1.9,3.8], [0,1.9] ]);
scale([tnut_nut_scale,tnut_nut_scale,1]) translate([0,0,0.7]) nut(M5_nut);
translate([0,0,-1]) cylinder(h=5,d=5+2*printer_off);
}
}
module joint_hole(jl=6,screw_l=joint_screw_len,print_upside=false,cut_nut=true){
union(){
// hole for thread
rotate([0,0,0]) cylinder(h=screw_l,d=joint_screw_d+2*printer_off);
// hole for head
if (print_upside && bridge_support) {
translate([0,0,-bridge_thickness]) rotate([180,0,0]) cylinder(h=jl-bridge_thickness,d=joint_screw_washer);
} else {
rotate([180,0,0]) cylinder(h=jl,d=joint_screw_washer);
}
// hole for hex tool
translate([0,0,-jl]) rotate([180,0,0]) cylinder(h=40,d=5);
if (cut_nut) {
// cut tongue for rotating t-nut
if (printed_corners_nut==1)
translate([0,0,screw_l-joint_extr_depth+1]) cylinder(d=9, h=2, center=true);
// cut tongue for long sliding t-nut
if (printed_corners_nut==2)
translate([0,0,screw_l-joint_extr_depth+1]) cube([7,12,2], center=true); // 12 - slide length
}
}
}
module joint1x1(){
j1x1_len=20;
color(pp_color) difference(){
union(){
// main shape
linear_extrude(ext) polygon([[0,0], [j1x1_len,0], [j1x1_len,joint_screw_len-joint_extr_depth], [joint_screw_len-joint_extr_depth,j1x1_len], [0,j1x1_len]]);
// positioning groove
translate([0,0,ext/2]) rotate([180,-90,0]) vslot_groove(j1x1_len);
translate([0,0,ext/2]) rotate([0,90,90]) vslot_groove(j1x1_len);
}
// screw holes
translate([joint_space,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(j1x1_len);
translate([joint_in_material,joint_space,ext/2]) rotate([0,-90,0]) joint_hole(j1x1_len);
}
echo("J1x1");
}
module joint2x2(){
j2x2_len=40;
color(pp_color) difference(){
union(){
// main shape
linear_extrude(ext) polygon([[0,0], [j2x2_len,0], [j2x2_len,joint_screw_len-joint_extr_depth], [joint_screw_len-joint_extr_depth,j2x2_len], [0,j2x2_len]]);
// positioning groove
translate([0,0,ext/2]) rotate([180,-90,0]) vslot_groove(j2x2_len);
translate([0,0,ext/2]) rotate([0,90,90]) vslot_groove(j2x2_len);
}
// screw holes
translate([joint_space,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(j2x2_len);
translate([joint_space+20,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(j2x2_len);
translate([joint_in_material,joint_space,ext/2]) rotate([0,-90,0]) joint_hole(j2x2_len);
translate([joint_in_material,joint_space+20,ext/2]) rotate([0,-90,0]) joint_hole(j2x2_len);
}
echo("J2x2");
}
module joint_bed(){
jb_x=45;
jb_y=65;
slot_l=40;
slot_w=12.5;
slot_w2=5.2;
slot_x=(base_w-build_plate_mount_space)/2-2.5*ext;
slot_y=15;
slot_z=5;
color(pp_color) difference(){
union(){
// main shape
cube([jb_x,jb_y,ext]);
// positioning groove
translate([0,0,ext/2]) rotate([180,-90,0]) vslot_groove(jb_x);
translate([0,0,ext/2]) rotate([0,90,90]) vslot_groove(jb_y);
}
// screw holes
translate([joint_space+4,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(jb_y);
translate([jb_x-6.5,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(jb_y);
translate([joint_in_material,joint_space,ext/2]) rotate([0,-90,0]) joint_hole(jb_x);
translate([joint_in_material,slot_l+slot_y,ext/2]) rotate([0,-90,0]) joint_hole(jb_x);
// slot
translate([slot_x,slot_y,slot_z]) hull(){
cylinder(h=ext-slot_z,d=slot_w);
translate([0,slot_l,0]) cylinder(h=ext-slot_z,d=slot_w);
}
translate([slot_x,slot_y,0]) hull(){
cylinder(h=slot_z,d=slot_w2);
translate([0,slot_l,0]) cylinder(h=slot_z,d=slot_w2);
}
}
}
module bed_support(){
jb_x=35;
slot_l=40;
jb_y=slot_l+20;
slot_w=12.5;
slot_w2=5.2;
slot_x=(base_w-build_plate_mount_space)/2-2.5*ext;
slot_y=(jb_y-slot_l)/2;
slot_z=5;
outer_d=(jb_x-slot_x)*2;
color(pp_color) difference(){
union(){
// main shape
hull(){
cube([1,jb_y,ext]);
translate([jb_x-outer_d/2,outer_d/2,0]) cylinder(h=ext,d=outer_d);
translate([jb_x-outer_d/2,jb_y-outer_d/2,0]) cylinder(h=ext,d=outer_d);
}
// positioning groove
translate([0,0,ext/2]) rotate([0,90,90]) vslot_groove(jb_y);
}
// screw holes
translate([joint_in_material,13,ext/2]) rotate([0,-90,0]) joint_hole(jb_x);
translate([joint_in_material,jb_y-13,ext/2]) rotate([0,-90,0]) joint_hole(jb_x);
// slot
translate([slot_x,slot_y,slot_z]) hull(){
cylinder(h=ext-slot_z,d=slot_w);
translate([0,slot_l,0]) cylinder(h=ext-slot_z,d=slot_w);
}
translate([slot_x,slot_y,0]) hull(){
cylinder(h=slot_z,d=slot_w2);
translate([0,slot_l,0]) cylinder(h=slot_z,d=slot_w2);
}
}
}
module joint_front(){
jf_h=1*ext;
jf_l=1.49*ext;
color(pp_color) difference(){
union(){
// main shape
linear_extrude(ext) polygon([[0,0], [jf_h,0], [jf_h,joint_in_material], [joint_in_material,jf_l], [joint_in_material/2,jf_l], [joint_in_material/2,jf_l-ext], [0,ext/2]]);
// positioning groove
translate([0,0,ext/2]) rotate([180,-90,0]) vslot_groove(jf_h);
translate([0,0,ext/2]) rotate([0,90,90]) vslot_groove(ext/2);
}
// screw holes
translate([joint_space,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(jf_l);
//translate([joint_space+20,joint_in_material,ext/2]) rotate([90,0,0]) joint_hole(jf_l);
translate([joint_in_material,1*ext,ext/2]) rotate([0,-90,0]) joint_hole(jf_h);
}
echo("JF");
}
module leadnut_cut(){
color("#ffc81f") difference(){
union(){
// plate
translate([0,0,-3.5]) intersection(){
cylinder(h=3.5,d=22);
translate([-6,-11,0]) cube([12,22,3.5]);
}
// cylinder
translate([0,0,-5]) cylinder(h=15,d=10.25);
}
// hole for T8
translate([0,0,-5]) cylinder(h=15,d=8);
// holes for M3 screws
translate([0,8,-3.5]) cylinder(h=3.5,d=3.5);
translate([0,-8,-3.5]) cylinder(h=3.5,d=3.5);
}
}
module printed_joints(){
// joints
// bottom - main frame
translate([ext,ext,0]) rotate([0,0,0]) joint2x2();
translate([base_w-ext,ext,0]) rotate([0,0,90]) joint2x2();
translate([ext,base_d-2*ext,0]) rotate([0,0,-90]) joint2x2();
translate([base_w-ext,base_d-2*ext,0]) rotate([0,0,180]) joint2x2();
// bottom - Z pulley support
translate([ext,z_pulley_support+0.5*ext,0]) rotate([0,0,0]) joint1x1();
translate([base_w-ext,z_pulley_support+0.5*ext,0]) rotate([0,0,90]) joint1x1();
//translate([ext,z_pulley_support-0.5*ext,0]) rotate([0,0,-90]) joint1x1();
translate([base_w-ext,z_pulley_support-0.5*ext,0]) rotate([0,0,180]) joint1x1();
// front
translate([ext,ext,2*ext]) rotate([90,0,0]) joint2x2();
translate([base_w-ext,ext,2*ext]) rotate([90,-90,0]) joint2x2();
translate([base_w-ext,ext,base_h-2*ext]) rotate([90,180,0]) joint2x2();
translate([ext,ext,base_h-2*ext]) rotate([90,90,0]) joint2x2();
// left
translate([ext,base_d-2*ext,ext]) rotate([90,0,-90]) joint2x2();
translate([ext,base_d-2*ext,base_h-ext]) rotate([0,90,180]) joint2x2();
translate([0,base_d,base_h-ext]) rotate([0,90,0]) joint2x2();
// left - filament support
translate([ext,base_d/2,ext]) rotate([90,0,-90]) joint1x1();
translate([ext,base_d/2,base_h-ext]) rotate([0,90,180]) joint1x1();
translate([ext,base_d/2+ext,ext]) rotate([0,-90,0]) joint1x1();
translate([0,base_d/2+ext,base_h-ext]) rotate([0,90,0]) joint1x1();
// right - filament support
translate([base_w,base_d/2,ext]) rotate([90,0,-90]) joint1x1();
translate([base_w,base_d/2,base_h-ext]) rotate([0,90,180]) joint1x1();
translate([base_w,base_d/2+ext,ext]) rotate([0,-90,0]) joint1x1();
translate([base_w-ext,base_d/2+ext,base_h-ext]) rotate([0,90,0]) joint1x1();
// right
translate([base_w,base_d-2*ext,ext]) rotate([90,0,-90]) joint2x2();
translate([base_w,base_d-2*ext,base_h-ext]) rotate([0,90,180]) joint2x2();
translate([base_w-ext,base_d,base_h-ext]) rotate([0,90,0]) joint2x2();
// back
translate([ext,base_d,ext]) rotate([90,0,0]) joint2x2();
translate([ext,base_d-ext,base_h-ext]) rotate([-90,0,0]) joint2x2();
translate([base_w-ext,base_d,base_h-ext]) rotate([90,180,0]) joint2x2();
translate([base_w-ext,base_d,ext]) rotate([90,-90,0]) joint2x2();
// back - electronics support
translate([elec_support,base_d,ext]) rotate([90,0,0]) joint1x1();
translate([base_w+ext-elec_support,base_d,ext]) rotate([90,0,0]) joint1x1();
translate([elec_support,base_d-ext,base_h-ext]) rotate([-90,0,0]) joint1x1();
translate([base_w+ext-elec_support,base_d-ext,base_h-ext]) rotate([-90,0,0]) joint1x1();
translate([elec_support-ext,base_d,base_h-ext]) rotate([90,180,0]) joint1x1();
translate([base_w-elec_support,base_d,base_h-ext]) rotate([90,180,0]) joint1x1();
translate([elec_support-ext,base_d,ext]) rotate([90,-90,0]) joint1x1();
translate([base_w-elec_support,base_d,ext]) rotate([90,-90,0]) joint1x1();
// front joints near T8 screws
translate([ext,2*ext,ext]) rotate([0,-90,0]) joint_front();
translate([base_w,2*ext,ext]) rotate([0,-90,0]) joint_front();
translate([0,2*ext,base_h-ext]) rotate([0,90,0]) joint_front();
translate([base_w-ext,2*ext,base_h-ext]) rotate([0,90,0]) joint_front();
}
module frame(){
// horizontal
length_a=base_w-2*ext;
echo(length_a=length_a);
// front bottom (profile A)
translate([ext,ext,0]) rotate([0,90,0]) rotate([0,0,90]) ext2040(length_a);
// rear bottom (profile A)
translate([ext,base_d-2*ext,0]) rotate([0,90,0]) ext2040(length_a);
// rear top (profile A)
translate([ext,base_d-2*ext,base_h-ext]) rotate([0,90,0]) ext2040(length_a);
// front top (profile A)
translate([ext,0,base_h]) rotate([0,90,0]) rotate([0,0,-90]) ext2040(length_a);
// Z pulley support (profile A)
translate([ext,z_pulley_support-ext/2,0]) rotate([0,90,0]) ext2020(length_a);
// vertical
length_b=base_h-2*ext;
echo(length_b=length_b);
// front left (profile B)
translate([ext,0,ext]) ext2040(length_b);
// front right (profile B)
translate([base_w,0,ext]) ext2040(length_b);
// back left (profile B)
translate([ext,base_d-2*ext,ext]) ext2040(length_b);
// back right (profile B)
translate([base_w,base_d-2*ext,ext]) ext2040(length_b);
// back support for electronics (profile B)
translate([elec_support,base_d-ext,ext]) ext2020(length_b);
translate([base_w+ext-elec_support,base_d-ext,ext]) ext2020(length_b);
// left/right support for filament spool
translate([ext,base_d/2,ext]) ext2020(length_b);
translate([base_w,base_d/2,ext]) ext2020(length_b);
length_d=base_d;
echo(length_d=length_d);
// bottom left (profile D)
translate([ext,0,ext]) rotate([-90,0,0]) ext2020(length_d);
// bottom right (profile D)
translate([base_w,0,ext]) rotate([-90,0,0]) ext2020(length_d);
length_e=top_d;
echo(length_e=length_e);
// top left (profile E)
translate([ext,0,base_h]) rotate([-90,0,0]) ext2020(length_e);
// top right (profile E)
translate([base_w,0,base_h]) rotate([-90,0,0]) ext2020(length_e);
// printed joints
if (printed_corners) printed_joints();
}
module fcc_cable(length, height, dxy){
thick=0.1;
d=abs(dxy.x);
lr=PI*d/2;
lm=length-lr;
ld=dxy.y;
l1=lm/2+ld/2;
l2=lm/2-ld/2;
color("#f0f0f0") union(){
// half circle
translate([d/2,l1,0]) rotate_extrude(angle=180,convexity=2) translate([d/2,0,0]) square([thick,height]);
// left
translate([-thick,0,0]) cube([thick,l1,height]);
// right
translate([dxy.x,dxy.y,0]) cube([thick,l2,height]);
}
}
module bmg_extruder(){
bmg_color=[0.2, 0.2, 0.2];
bmg_points=[[0,0],[42,0],[42,53],[19,53],[0,38]];
translate([-21,-17,-21]) rotate([90,0,0]) color(bmg_color) linear_extrude(height=34, center=true) polygon(bmg_points);
bmg_side_points=[[0,0],[20,0],[20,26],[16,54],[4,54],[0,26]];
translate([20,-29,-3]) rotate([95,0,90]) color(bmg_color) linear_extrude(height=5, center=true) polygon(bmg_side_points);
}
module sailfin_extruder(part=0,color1="#00aaff",color2="00ffaa"){
// Zero at bottom of filament output
// bounding box: x=-17.7:23.7
//#translate([-17.7,-14.4,0]) cube([41.4,27.6,47.3]);
// imported parts
translate([-4.4,13.2,15]) rotate([0,-90,90]) {
if ((part==0)||(part==1)) color(color1) import("Sailfin-Extruder/STL/Front.stl");
if ((part==0)||(part==2)) color(color2) rotate([0,90,90]) import("Sailfin-Extruder/STL/Lever.stl");
if ((part==0)||(part==3)) color(color1) import("Sailfin-Extruder/STL/Mid.stl");
if ((part==0)||(part==4)) color(color1) translate([0,0,-1]) scale([1,1,1.143]) import("Sailfin-Extruder/STL/Rear.stl");
}
if ($preview) {
//screws
// right mount
translate([19,-2.9,7.1]) rotate([0,0,0]) screw(M3_cap_screw,10);
//translate([16.1,-13,4.5]) rotate([90,0,0]) screw(M3_cap_screw,35);
// left mount
translate([-14,-2.9,7.1]) rotate([0,0,0]) screw(M3_cap_screw,10);
//translate([-14.3,-6,3.4]) rotate([90,0,0]) screw(M3_cap_screw,30);
// main gear
translate([-4.4,10,15.0]) rotate([90,0,0]) color("gray"){
cylinder(h=3,d=26);
translate([0,0,-3]) cylinder(h=27,d=7);
}
}
}
module mrf_extruder(part=0,color1="#00aaff",color2="#00ffaa"){
// Zero at bottom of filament output
// bounding box: x=-17.7:23.7
//#translate([-17.7,-14.4,0]) cube([41.4,27.6,47.3]);
// imported parts
if ((part==0)||(part==1)) color(color1) translate([121.7,132.8,76.4]) rotate([90,0,0]) import("MRF/3.stl"); // front
if ((part==0)||(part==2)) color(color2) translate([155.4,108.2,22.1]) rotate([-90,0,90]) import("MRF/4.stl"); // lever
if ((part==0)||(part==3)) color(color1) translate([-4.5,150.6,86.5]) rotate([90,-90,0]) import("MRF/2.stl"); // mid
if ((part==0)||(part==4)) color(color1) translate([-59.8,158.6,94]) rotate([90,-90,0]) import("MRF/1.stl"); // rear
if ((part==0)||(part==5)) color(color2) translate([-33.0,-155.9,-99.6]) rotate([-90,90,0])import("MRF/5.stl"); // lock
if ($preview) {
//screws
// right mount
translate([20,-2.7,6.6]) rotate([0,0,0]) screw(M3_cap_screw,10);
// left mount
translate([-14,-2.7,7.6]) rotate([0,0,0]) screw(M3_cap_screw,10);
// front left
translate([-4.5,-14.7,5.2]) rotate([90,0,0]) screw(M3_cap_screw,20);
// front right
translate([15.9,-14.7,4.5]) rotate([90,0,0]) screw(M3_cap_screw,30);
// lever (back)
translate([7.5,14.5,3.5]) rotate([-90,0,0]) screw(M3_cap_screw,30);
// front center
translate([0,-14.7,24.3]) rotate([90,0,0]) screw(M3_cap_screw,10);
// lock
translate([0,-14.7,38.6]) rotate([90,0,0]) screw(M3_cap_screw,10);
// left rear
translate([-15.0,14.5,3.5]) rotate([-90,0,0]) screw(M3_cap_screw,14);
// main gear
translate([-4.4,10,15.0]) rotate([90,0,0]) color("gray"){
cylinder(h=3,d=26);
translate([0,0,-3]) cylinder(h=27,d=7);
}
}
}
module moli_extruder(part=0,color1="#00aaff",color2="#00ffaa"){
// Zero at bottom of filament output
// imported parts
translate([0,7.8,29]) rotate([0,0,0]) {
if ((part==0)||(part==1)) color(color1) import("Moli-Extruder/STL/BMG Shaft/MoliExtruder_top.stl");
if ((part==0)||(part==2)) color(color2) import("Moli-Extruder/STL/BMG Shaft/MoliExtruder_arm.stl");
if ((part==0)||(part==3)) color(color2) import("Moli-Extruder/STL/BMG Shaft/MoliExtruder_middle.stl");
if ((part==0)||(part==4)) color(color1) import("Moli-Extruder/STL/BMG Shaft/MoliExtruder_bottom.stl");
}
if ($preview) {
//screws
// right mount
translate([15,3.6,3.1]) rotate([90,0,0]) screw(M3_cap_screw,10);
//translate([16.1,-13,4.5]) rotate([90,0,0]) screw(M3_cap_screw,35);
// left mount
translate([-16.0,3.6,3.1]) rotate([90,0,0]) screw(M3_cap_screw,10);
//translate([-14.3,-6,3.4]) rotate([90,0,0]) screw(M3_cap_screw,30);
// main gear
translate([-4.4,10,15.0]) rotate([90,0,0]) color("gray"){
cylinder(h=3,d=26);
translate([0,0,-3]) cylinder(h=27,d=7);
}
}
}
module extruder_with_bmg(){
translate([0,-36,-4]) rotate([0,0,90]) hot_end(E3Dv6, 1.75, bowden = false,resistor_wire_rotate = [0,0,0], naked = false);
translate([-6,-12,8]) {
rotate([90,0,0])NEMA(NEMA17S23);
translate([0,-1,0])bmg_extruder();
}
}
module nema14_round(depth=20){
hole_distance=43.84;
color("gray") {
// bottom
translate([0,0,-depth]) cylinder(h=4.3,d=36.2);
// top
difference(){
union(){
translate([0,0,-4]) cylinder(h=4,d=36.2);
hull(){
m=51;
translate([-hole_distance/2,0,-2]) cylinder(h=2,d=m-hole_distance);
translate([hole_distance/2,0,-2]) cylinder(h=2,d=m-hole_distance);
translate([0,13,-2]) cylinder(h=2,d=7);
translate([0,-13,-2]) cylinder(h=2,d=7);
}
}
translate([-hole_distance/2,0,-2]) cylinder(h=2,d=2.6);
translate([hole_distance/2,0,-2]) cylinder(h=2,d=2.6);
}
// raised part
cylinder(h=1.5,d=16);
// shaft
cylinder(d=2.5,h=6);
// gear
translate([0,0,2]) cylinder(h=4,d=6);
}
// middle black cylinder
translate([0,0,4-depth]) color("black") cylinder(h=depth-8,d=34.9);
// cables
translate([-5,16,-depth+0.5]) color("white") cube([10,5,3.5]);
}
module ormerod_sensor(){
ow=24.2;
oh=17.6;
difference(){
// pcb
color("green") translate([-ow/2,-oh/2,0]) cube([ow,oh,1.5]);
// mounting holes
translate([-9.25,oh/2-2.65,-eps]) cylinder(h=1.5+2*eps,d=3);
translate([9.25,oh/2-2.65,-eps]) cylinder(h=1.5+2*eps,d=3);
}
// socket original
//translate([-2.4,oh/2-2.65,0]) rotate([0,0,0]) pin_header(2p54header, 3, 1);
// socket right angle
translate([-2.4,oh/2-2.65,1.5]) rotate([0,0,180]) jst_xh_header(jst_xh_header, 3, right_angle = true);
// capacitor
translate([-1.7,-oh/2+3,0]) color("grey") cylinder(d=5.1,h=8.15);
}
module bl_touch(){
translate([-13,-5.8,0]) import("BL-touch.stl");
}
module fpc30_pcb(screw_l=8){
pcb_w=26;
pcb_d=40;
translate([-pcb_w/2,-pcb_d/2,0]) {
difference(){
color("green") cube([pcb_w,pcb_d,1.5]);
//holes
translate([pcb_w/2+fpc30_screws[0].x,pcb_d/2+fpc30_screws[0].y,0]) cylinder(h=1.5,d=3.25);
translate([pcb_w/2+fpc30_screws[1].x,pcb_d/2+fpc30_screws[1].y,0]) cylinder(h=1.5,d=3.25);
}
translate([21,pcb_d/2,1.5]) rotate([0,0,90]) pin_header(2p54header, 15, 2);
translate([3,pcb_d/2,1.5]) rotate([0,0,90]) flat_flex([[30,1.25], [37,1.5,2.5], [30,4.0,2.5], [36,0,2.5]]);
// FPC board screws
translate([pcb_w/2+fpc30_screws[0].x,pcb_d/2+fpc30_screws[0].y,1.5]) screw(M3_cap_screw,screw_l);
translate([pcb_w/2+fpc30_screws[1].x,pcb_d/2+fpc30_screws[1].y,1.5]) screw(M3_cap_screw,screw_l);
}
}
module blower_spacer(){
bs_h=blower_depth(hotend_blower)-blower_lug(hotend_blower);
color(pp_color2) difference(){
cylinder(d=6,h=bs_h);
cylinder(d=3+2*printer_off,h=bs_h);
}
}
module blower_to_v6(blower_type=hotend_blower){
v6_d=22.3;
v6_h=26;
shroud_d=40;
shroud_h=36;
shroud_z_shift=1;
color(pp_color) difference(){
union(){
// main shape
hull(){
// front
translate([-10.5,-10,-13+7]) rotate([-90,0,0]) cube([21,26+7,0.1]);
// back
hull(){
translate([-shroud_d/2+2.5,13,shroud_h/2-25-2.5+shroud_z_shift]) rotate([90,0,0]) cylinder(h=0.1,d=5);
translate([-shroud_d/2+2.5,13,-shroud_h/2-25+2.5+shroud_z_shift]) rotate([90,0,0]) cylinder(h=0.1,d=5);
translate([shroud_d/2-2.5,13,-shroud_h/2-25+2.5+shroud_z_shift]) rotate([90,0,0]) cylinder(h=0.1,d=5);
translate([shroud_d/2-2.5,13,shroud_h/2-25-2.5+shroud_z_shift]) rotate([90,0,0]) cylinder(h=0.1,d=5);
}
}
// blower mounts
translate([20,33-13-7,-4.5]) rotate([-90,0,180])
for (p=blower_screw_holes(blower_type))
translate([p.x,p.y,0]) cylinder(h=7,d=6);
// sensor mount
if (level_probe==0) {
// Ormerod sensor
translate([probe_p1.x,0,probe_p1.y]) rotate([90,0,0]) cylinder(h=-probe_y+1.5,d=4);
translate([-probe_p1.x,0,probe_p1.y]) rotate([90,0,0]) cylinder(h=-probe_y+1.5,d=4);
}
if (level_probe==1){
// BL-Touch
translate([(-16.4+0.5)*bltouch_side,-8.4,bltouch_z]) hull(){
cylinder(h=4,d=8);
translate([-4,20,0]) cube([8,1,4]);
}
}
}
// main air hole from blower
hull(){
translate([-v6_d/2,0,-14]) rotate([-90,0,0]) cube([v6_d,v6_h-1,0.1]);
translate([-1.5,13,-24.5]) rotate([-90,0,0]) cylinder(d=29,h=0.1);
}
// hole for V6
translate([0,0,-39-6]) cylinder(h=v6_h+0.3+6+printer_off,d=v6_d+2*printer_off);
translate([0,0,-6-7]) cylinder(d=16+2*printer_off,h=7);
// bottom hole
translate([0,12.8-40/2,-39-6]) cylinder(d=38,h=6);
// blower screw holes
translate([20,33-13,-4.5]) rotate([-90,0,180])
for (p=blower_screw_holes(blower_type)) {
// holes for M3
translate([p.x,p.y,7]) cylinder(h=7,d=3+2*printer_off);
// holes for head of M3
translate([p.x,p.y,14]) cylinder(h=10,d=6);
}
// air inlet
//translate([-v6_d/2+1,-10.1,-v6_h-13]) cube([v6_d-2,5.1,v6_h]);
translate([-v6_d/2+1,-10.1,-v6_h-13]) hull() {
rotate([90,0,0]) linear_extrude(0.1) polygon([[0,0], [v6_d-2,0], [v6_d-2-3,v6_h], [3,v6_h]]);
translate([0,5,0]) cube([v6_d-2,0.1,v6_h]);
}
// space for V6 top mount
translate([-13,-10-0.1,-7.5]) cube([26,22,2]);
// sensor mount screw holes
if (level_probe==0) {
// Ormerod
translate([probe_p1.x,0,probe_p1.y]) rotate([90,0,0]) cylinder(h=-probe_y+1.5,d=m2_hole);
translate([-probe_p1.x,0,probe_p1.y]) rotate([90,0,0]) cylinder(h=-probe_y+1.5,d=m2_hole);
}
if (level_probe==1){
// BL-Touch
translate([-16.4*bltouch_side,-8.4,-14-eps]) cylinder(h=4+2*eps,d=m3_insert);
}
}
}
module v6_hole(){
union(){
// inner groove
translate([0,0,-2-4-printer_off]) cylinder(h=6.01+printer_off,d=12+2*printer_off);
// top groove
cylinder(h=4.01,d=16+2*printer_off);
}
}
module v6_clamp(){
clamp_dy=11;
color(pp_color2) difference(){
union(){
// main part
translate([-20,hot_y-clamp_dy,hot_z-4]) cube([40,clamp_dy,8]);
// bottom V6 mount
translate([-25/2,hot_y-25/2+1.5,hot_z-6]) cube([25,25/2-1.5,2]);
// TBG mounts
if (extruder_type==2) {
for (i=[0,1]) {
translate([TBG_holes_front()[i].x,hot_y-clamp_dy,hot_z+4]) hull(){
th=clamp_dy+TBG_dimensions()[2]; // front dimension is negative
translate([-3,0,0]) cube([6,th,1]);
translate([0,0,TBG_holes_front()[i].z+0.5]) rotate([-90,0,0]) cylinder(h=th,d=6);
}
}
}
// HGX mounts
if (extruder_type==6) {
for (i=[0,1]) {
translate([HGX_holes_front()[i].x,hot_y-clamp_dy,hot_z+4]) hull(){
th=clamp_dy+HGX_dimensions()[2]; // front dimension is negative
translate([-3,0,0]) cube([6,th,1]);
translate([0,0,HGX_holes_front()[i].z+0.25]) rotate([-90,0,0]) cylinder(h=th,d=6);
}
}
}
// Sailfin mounts
if (extruder_type==1) {
intersection(){
translate([19,-2.9+hot_y,hot_z-4]) cylinder(h=8,d=7);
translate([-20,hot_y-11,hot_z-4]) cube([43,11,8]);
}
}
}
// HOLES
// V6 hole
translate([0,hot_y,hot_z])v6_hole();
// mount holes
for (i=[-9,9]){
translate([i,hot_y,-7]) rotate([90,0,0]) cylinder(h=11,d=3.2);
//translate([i,hot_y-11,-7]) rotate([-90,0,0]) cylinder(h=3,d=6);
}
// cable to hotend hole (not with Sailfin - mount screw is in this place)
if (extruder_type!=1) {
translate([-18,hot_y-9,-8.01]) cube([5,10,7]);
}
// TBG holes
if (extruder_type==2) {
for (i=[0,1]) {
translate([TBG_holes_front()[i].x,hot_y-clamp_dy,hot_z+4+TBG_holes_front()[i].z+0.5]) rotate([-90,0,0]) cylinder(h=clamp_dy+TBG_dimensions()[2],d=3.2);
}
}
// HGX holes
if (extruder_type==6) {
for (i=[0,1]) {
translate([HGX_holes_front()[i].x,hot_y-clamp_dy,hot_z+4+HGX_holes_front()[i].z+0.25]) rotate([-90,0,0]) cylinder(h=clamp_dy+HGX_dimensions()[2],d=3.2);
}
}
// Sailfin holes
if (extruder_type==1) {
translate([19,-2.9+hot_y,hot_z-4]) cylinder(h=8,d=m3_insert);
translate([-14,-2.9+hot_y,hot_z-4]) cylinder(h=8,d=m3_insert);
}
}
if ($preview){
// mounting screws
for (i=[-9,9]) {
translate([i,hot_y-11,-7]) rotate([90,0,0]) screw(M3_cap_screw,16);
}
// screws for TBG
if (extruder_type==2) {
translate([TBG_holes_front()[0].x,hot_y-clamp_dy,hot_z+4+TBG_holes_front()[0].z+0.5]) rotate([90,0,0]) screw(M3_cap_screw,30);
translate([TBG_holes_front()[1].x,hot_y-clamp_dy,hot_z+4+TBG_holes_front()[1].z+0.5]) rotate([90,0,0]) screw(M3_cap_screw,16);