remove support for supports

it's not easily printable without removable supports anyway now

1 files changed, 2 insertions, 26 deletions

diff --git a/another.scad b/another.scad
index 2331003..9ff7f6a 100644
--- a/another.scad
+++ b/another.scad
@@ -50,49 +50,49 @@ module the_extruder(
 
  // empty spaces
  idler_travel = 3,				// how far should idler travel when pressed
  idler_clearance=1,
  pulley_d_clearance=2,
  pulley_small_d_clearance=0.5,
  lever_v_clearance=.7,				// vertical clearance for the lever
  spring_d_clearance=1,
  protrusion_tolerance_h=.5,			// horizontal tolerance for the motor protrusion
  protrusion_tolerance_v=.5,			// vertical tolerance for the motor protrusion
  mount_screw_d_tolerance=.4,
  idler_v_tolerance=.5,
  knob_bore_d_tolerance=.6,
  st_nut_h_tolerance=.2,
  st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
  st_screw_d_tolerance=.5,
  st_split_w_tolerance = .3,
 
  min_z_shell = 4*layer_height,                  // the very minimal shell thickness along z-axis.
  min_xy_shell = 2*extrusion_width,
 
  what="lever",  // lever|body|knob|springpad|*
  left=false,
  vitamins = true,
- supports = false, bridges = true,
+ bridges = true,
  tensioner = true,
  debug = false
 ) {
  fnd = 2*PI; fnr = 2*fnd;
 
  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; // the diameter of lever thingie
  longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell;
  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;
  // finger and spring support
  fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2);
 
  mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1;
  mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1;
  filament_elevation=protrusion_h+pulley_elevation+teeth_elevation;
  ls_z = filament_elevation; // leverspace mid-z
  ls_h = lever_thickness+lever_v_clearance; // leverspace height
@@ -177,54 +177,49 @@ module the_extruder(
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
       translate([mount_d/2,-longwing,0]) rotate([0,90,0])
       cylinder(d=lever_thickness,h=lsd,center=true,$fn=60);
      }//hull
     }//union
  
     // filament path
     place_idler()
     translate([-idler_d/2-idler_filament_offset,0,0])
     rotate([90,0,0]) {
      mirror([0,1,0])
      teardrop(d=filament_path_d,h=3*gearbox_d,center=true);
      translate([0,0,
       sqrt(2)*(mount_d-pulley_d+lsd)/2
      ]) {
       cylinder(d1=filament_path_d,d2=2*filament_path_d,
                h=filament_path_d,$fn=2*filament_path_d*fnd);
       translate([0,0,filament_path_d-epsilon])
       cylinder(d=2*filament_path_d,h=lsd*sqrt(2),$fn=2*filament_path_d*fnd);
      }//translate
     }//rotate translate place_idler
 
     // idler space and mounting hole
     place_idler() {
-     difference() {
-      cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60);
-      if(supports) for(y=[-lsd/2+extrusion_width:(lsd-2*extrusion_width)/3:lsd/2-extrusion_width])
-       translate([-lsd/2-1,y-extrusion_width/2,-idler_h/2-idler_v_tolerance/2-1])
-       cube(size=[lsd+2,extrusion_width,idler_h+idler_v_tolerance+2]);
-     }
+     cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60);
      cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30);
      translate([0,0,lever_thickness/2-idler_screwhead_h])
      cylinder(d=idler_screwhead_d,h=idler_screwhead_h+1,$fn=fnd*idler_screwhead_d);
     }
     // mounting screw hole
     translate([mount_d/2,0,0])
     cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=fnd*mount_screw_d);
     
     // lever end
     translate([mount_d/2,0,0]) rotate([0,90,0]) {
      translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15);
      translate([0,-longwing,0])
      mirror([0,0,1])
      difference() {
       cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=fnd*(spring_d+spring_d_clearance));
       sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
      }
     }//rotate-translate
    }//difference
    // bridging patch
    if(bridges) place_idler()
    translate([0,0,lever_thickness/2-mount_screwhead_h])
    mirror([0,0,1])
    cylinder(d=mount_screwhead_d,h=layer_height);
@@ -365,67 +360,48 @@ module the_extruder(
    translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
     if(!tensioner) finger_indent(d=lever_thickness-1,r=15); else {
      mirror([0,0,1]) {
       translate([0,0,st_thickshell])
       hull() for(o=[0,spring_d]) translate([0,-o,0])
       rotate([0,0,30])
       cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6);
       translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
       bigd = spring_d+spring_d_clearance;
       hf = (bigd-st_screw_d-st_screw_d_tolerance)/2;
       translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) {
        cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd,
         h=hf+epsilon, $fn=fnd*bigd);
        translate([0,-(st_thinshell+st_split_w_tolerance)/2,0])
        cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]);
       }
       translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
       cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
      }
     }
    }
 
   }//difference
 
-  if(supports) intersection() {
-   difference() {
-    translate([0,0,ls_z-ls_h/2-epsilon])
-    cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=fnd*gearbox_d);
-    cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
-   }
-   // supports
-   // TODO: hardcoded stuff below…
-   if(false) { // parallel
-    for(y=[-gearbox_d:4:gearbox_d])
-     translate([0,y-extrusion_width/2,0])
-     cube(size=[gearbox_d,extrusion_width,body_h]);
-   }else{ // radial
-    for(zr=[-65:(65+50)/7:50])
-     rotate([0,0,zr]) translate([0,-extrusion_width/2,0])
-     cube(size=[gearbox_d,extrusion_width,body_h]);
-   }
-  }
-
  }//body module
 
  module springpad() {
   smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
   bigd = spring_d+spring_d_clearance/2;
   hf = (bigd-smalld)/2;
   h = hf*3.5;
   translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation])
   rotate([0,90,0]) difference() {
    union() {
     cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
     translate([0,0,hf-epsilon])
     cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
     translate([0,0,h])
     sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
     l = body_h-ls_z;
     w = st_thinshell;
     hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) {
      translate([0,0,w])
      cube(size=[l,st_thinshell,w]);
      cube(size=[l-w,st_thinshell,2*w]);
     }
    }
    translate([0,0,-epsilon])