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gistfile1.c

include <MCAD/involute_gears.scad>
include <MCAD/bearing.scad>
include <MCAD/boxes.scad>
include <MCAD/nuts_and_bolts.scad>
include <MCAD/units.scad>

far_center = [60,0,0];
near_center = [-60,0,0];
end_cube_radius = 15;
stem_thickness = 7;
hole_offset = end_cube_radius-4.75;
clamp_offsets = [[ hole_offset,  hole_offset, 0],
                 [ hole_offset, -hole_offset, 0],
                 [-hole_offset,  hole_offset, 0],
                 [-hole_offset, -hole_offset, 0]];
geart = 13-2*epsilon;

module stem(o=false,t=0){
  difference(){
    union(){
      //near hub
      translate(near_center+[0,0,2.5]) roundedBox([30+2*t,30+2*t,(stem_thickness+5)+2*t],5+t,1);
      //far hub
      translate(far_center+[-7,0,0]) roundedBox([30+14+2*t,30+2*t,stem_thickness],5,1);
      cube([100+2*t,30+2*t,stem_thickness],true);
    }
    //standard stem holes
    //mounting helpers - holes all the way through
    for(y = [-5, 5]){
       for(x = [-30 : 10 : 20]){
         translate([x,y,-50]){
            boltHole(3,length=100);
         }
       }
    }
    //bearing holes
    for(bearing_pos = [near_center+[0,0,-3.5+5+0.4],far_center+[0,0,-3.5+0.4]]){
      bearing(pos=bearing_pos,outline=true);
      translate(bearing_pos+[0,0,-10]) boltHole(8, length=20);
    }
  }
}

module s1_main_left(o=false,t=0){
  difference(){
    stem(o,t);
    for(nut_side = [near_center+[0,0,stem_thickness/2+5+epsilon], far_center+[0,0,stem_thickness/2+epsilon]]){
      for(nut_pos = clamp_offsets){
        translate((nut_side+nut_pos-[0,0,-epsilon+METRIC_NUT_THICKNESS[3]])){
          nutHole(3);
          translate([0,0,-10]) boltHole(3,length=20);
        }
      }
    }
  }
}

s1_main_left();