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-rw-r--r--another.scad22
1 files changed, 18 insertions, 4 deletions
diff --git a/another.scad b/another.scad
index 342d70c..2ea5417 100644
--- a/another.scad
+++ b/another.scad
@@ -40,12 +40,13 @@ module the_extruder(
mount_screw_d = 3.1, mount_screw_l = 20,
mount_screwhead_d=6, mount_screwhead_h=3,
idler_screw_d = 3,
idler_screwhead_d=6, idler_screwhead_h=3,
pf = pushfit_embeddest,
+ pf_shell = max(3*layer_height,3*extrusion_width),
// empty spaces
idler_travel = 3, // how far should idler travel when pressed
idler_clearance=1,
pulley_clearance=2,
lever_v_clearance=.7, // vertical clearance for the lever
@@ -241,16 +242,29 @@ module the_extruder(
}
}
} // translate
// pushfit bracket
translate([0,0,filament_elevation])
- rotate([0,0,45]) translate([pulley_d/2,0,0])
+ rotate([0,0,45]) translate([(pulley_d-filament_path_d)/2,0,0])
rotate([-90,0,0])
- translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/])
- cylinder(r=min(body_h-filament_elevation,filament_elevation)/sin(60)-epsilon,h=pf_h(pf)+gearbox_d/2/*TODO:*/,$fn=6);
+ translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) {
+ pfb2a = pf_d(pf)+2*pf_shell; pfba = pfb2a/2;
+ pfbd = pfb2a/cos(30);
+ pfbs = pfb2a*tan(30);
+ pfbl = pf_h(pf)+gearbox_d/2/*TODO:*/;
+ cylinder(d=pfbd,h=pfbl,$fn=6);
+ translate([-pfbs/2,0,0]) {
+ hull() {
+ translate([0,-pfba,0]) cube(size=[pfbs,pfb2a,pfbl]);
+ cube(size=[pfbs,filament_elevation,pfbl-filament_elevation+pfba]);
+ mirror([0,1,0])
+ cube(size=[pfbs,body_h-filament_elevation,pfbl-body_h+filament_elevation+pfba]);
+ }
+ }
+ }
}//union (first child of difference)
// protrusion
translate([0,0,-1])
cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h));
// mount screw holes
@@ -262,13 +276,13 @@ module the_extruder(
$fn=fnd*(mount_screw_d+mount_screw_d_tolerance));
translate([0,0,mount_screw_l-mounthole_depth/2])
cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d);
}//for
// pushfit
translate([0,0,filament_elevation])
- rotate([0,0,45]) translate([pulley_d/2,0,0])
+ rotate([0,0,45]) translate([(pulley_d-filament_path_d)/2,0,0])
rotate([-90,0,0])
translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon])
rotate([0,0,180]) {
pushfit(pf);
cylinder(d=filament_guide_d,h=gearbox_d,center=true,$fn=fnd*filament_guide_d);
translate([0,-filament_guide_d/2/sqrt(2),0])