scalu_XY_bearings.scad

width = 25;

difference() {
  union() {
    rotate([0, 90, 0])
    linear_extrude(width) {
      hull() {
        translate([-8, 28, 0]) circle(8);
        w=10;
        translate([w-37, 20+w, 0]) circle(w);
        translate([-37, 60, 0]) square([37, 10]);
      }
    }

    //cube([width, 70, 37]);

    // extrusion standoffs
    translate([0, 60, 10]) rotate([0,180,0])
      union() {
        cube([4, 10, 4], center=true);
        cube([8, 10, 2], center=true);
      }
    translate([0, 44, 10]) rotate([0,180,0])
    union() {
      cube([4, 10, 4], center=true);
      cube([8, 10, 2], center=true);
    }
  }

  union() {
    // extrusion cut
    translate([-5, 20, 20]) rotate([180,0,0]) cube([35,35,35]);
    translate([-5, 20, 20+35+2]) rotate([180,0,0]) cube([35,35,35]);

    // fixing
    translate([-1, 52, 10]) rotate([0,90,0]) cylinder(h=width+2, d=4, $fn=64);
    translate([width/2, 10, 0]) cylinder(h=75, d=4, $fn=64);

    // linear
    translate([-1, 20+15, 5]) rotate([0,90,0]) cylinder(h=width+2, d=8, $fn=64);
    translate([-1, 20+15, 4.5]) cube([width+2, 70, 1]);

    // pulleys
    translate([width/2, 62, -9]) cylinder(h=70+2, d=8, $fn=64);
    translate([width/2, 62, 20])
      difference() {
        cube([width+1, 24, 9], center=true);
        union() {
          translate([0, 0, 3.5]) cylinder(h=1, d=10);
          translate([0, 0, -4.5]) cylinder(h=1, d=10);
        }
      }
    translate([width/2, 62, 30])
    difference() {
      cube([width+1, 24, 9], center=true);
      union() {
        translate([0, 0, 3.5]) cylinder(h=1, d=10);
        translate([0, 0, -4.5]) cylinder(h=1, d=10);
      }
    }
  }
}