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-rw-r--r--another.scad5
1 files changed, 4 insertions, 1 deletions
diff --git a/another.scad b/another.scad
index 4f70a1a..79cebdd 100644
--- a/another.scad
+++ b/another.scad
@@ -78,12 +78,15 @@ module the_extruder(
idler_filament_offset = filament_path_d/2; // -filament_offset;
lever_shell = mount_screwhead_h+0.5;
lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell);
lsd = idler_d-idler_clearance*2;
longwing=gearbox_d/2+spring_d/2+lsd/2;
+ shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2))
+ sqrt(c*c+pow(a-c,2));
+ longwing_travel = idler_travel*longwing/shortwing;
h_ = (pulley_d+idler_d)/(2*sqrt(2));
ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
spring_dl = idler_travel*longwing/ri;
mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1;
mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1;
@@ -227,13 +230,13 @@ module the_extruder(
module body() {
difference() {
union() {
cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d);
// finger and spring support
- fsw = gearbox_d-(gearbox_d-mount_d)/2-spring_lc;
+ fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2);
translate([-gearbox_d/2,0,0]) difference() {
union() {
hull() {
translate([0,-longwing,ls_z])
rotate([0,90,0])
cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness);