add spring tensioner screw to vitamins

1 files changed, 6 insertions, 2 deletions

diff --git a/another.scad b/another.scad
index 8334b11..1811584 100644
--- a/another.scad
+++ b/another.scad
@@ -13,49 +13,49 @@ module the_extruder(
  mount_d = 28,					// the distance between opposite mounting holes
  mounthole_depth = 5,
  mounthole_min_depth = 3, mounthole_max_depth = 4,
  protrusion_d = 22, protrusion_h = 2.2,		// the dimensions of the protrusion on top of gearbox
  bore_d = 8, bore_l = 17.6,
  bore_dd = 7,
  // pulley properties
  pulley = pulley_e3d,
  pulley_elevation = 1,				// pulley elevation above the protrusion
  // idler properties
  idler_d = 10, idler_h = 4, idler_id = 3,	// idler dimensions: outer and inner diameters and height
  // spring properties
  spring_d = 10, spring_lc = 9.6,		// spring diameter and compressed length
  // filament path properties
  filament_d = 1.75,
  filament_path_d = 2,
  filament_guide_d = 4,				// PTFE filament guide diameter
  // knob properties
  knob_h = 10,
  knob_indent_d = 4,
  knob_indents = 12,
  knob_v_clearance = 1,
  // spring tensioner
  st_nut_d = 9, st_nut_h = 4,
- st_screw_d = 5,
+ st_screw_d = 5, st_screw_l = 16,
  st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width,
  st_split_w = 4*extrusion_width,
 
  // screw it
  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_metal,
  pf_shell = max(3*layer_height,3*extrusion_width),
 
  // empty spaces
  idler_travel = 3,				// how far should idler travel when pressed
  idler_clearance=.5,
  pulley_small_d_clearance=.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=.8,
  st_nut_h_tolerance=.2,
@@ -148,49 +148,53 @@ module the_extruder(
     translate([-bore_d/2-1,bore_dd-bore_d/2,-1])
     cube([bore_d+2,bore_d/2,bore_l+2]);
    }
    translate([0,0,pulley_elevation]) {
     cylinder(d=pulley_d,h=pulley_h,$fn=30);
     translate([0,0,teeth_elevation]) {
      place_idler() {
       cylinder(d=idler_d,h=idler_h,center=true,$fn=30);
       cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30);
      }//place idler
      // filament path
      rotate([0,0,45]) {
       translate([pulley_d/2-idler_filament_offset,0,0]) rotate([90,0,0]) {
        cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15);
       }//rotate translate
       translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) {
        cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15);
        translate([0,0,pf_offset])
        pushfit(pf);
       }//rotate translate
      }//rotate
     }//translate teeth
    }//translate pulley
   }//translate protrusion
- }//vitamins
+  // spring tensioner screw
+  translate([-gearbox_d/2,-longwing,ls_z])
+  rotate([0,90,0])
+  cylinder(d=st_screw_d,h=st_screw_l);
+ }//mirrorleft if(vitamins)
 
  module lever() {
   translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) {
    difference() {
     union() {
      hull() {
       place_idler()
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
       translate([mount_d/2,0,0])
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
      }//hull
      hull() {
       translate([mount_d/2,0,0])
       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])