x-idler.scad

   1 $fn=50;
   2
   3 thingwall = 0.75;
   4 bearing= 13;
   5 clearence = 0.6;
   6
   7 difference(){
   8 union(){
   9 cylinder(h=7.5, r=((bearing+clearence)/2+thingwall+clearence/2)+thingwall);
  10 cylinder(h=0.8, r=10);
  11 }
  12 translate([0,0,1])
  13 cylinder(h=8, r=(bearing+clearence)/2+thingwall+clearence/2);
  14 cylinder(h=8, r=4.5);
  15
  16 }
  17
  18 translate([22,0,0]) difference(){
  19 union(){
  20 cylinder(h=7.5, r=(bearing+clearence)/2+thingwall);
  21 cylinder(h=0.8, r=10);
  22 }
  23 translate([0,0,1])
  24 cylinder(h=8, r=(bearing+clearence)/2);
  25 cylinder(h=8, r=4.5);
  26
  27 }