14 spool_yoff = -(spool_r + wall + 8)*cos(spool_angle);
15 spool_xoff = -(spool_r + wall + 8)*sin(spool_angle);
18 bearing_zoff = beam_h + wall;
22 bearing_r1 = bearing_d/2+wall - bearing_zoff/3;
24 module extrusion_clip(body_h) {
25 translate([-wall, -wall, 0]) cube([wall + x_width+eps, wall, body_h]);
26 translate([-wall, -wall, 0]) cube([wall, wall + y_height + eps, body_h]);
27 translate([x_width, -wall, 0]) cube([top_ins_w, top_ins_h + wall, body_h]);
28 translate([-wall, y_height, 0]) cube([wall+y_clip_l, wall, body_h]);
30 translate([0, 10, 0]) hull() {
31 translate([-eps, -4, 0]) cube([eps, 8, body_h]);
32 translate([1.5-eps, -3, 0]) cube([eps, 6, body_h]);
35 translate([y_clip_l-y_clip_end_r, y_height, 0])
36 cylinder(r = y_clip_end_r, h = body_h, $fn = 4);
39 module bearing_insert() {
41 cylinder(r1 = bearing_r1, r2 = bearing_d/2 + wall, h = bearing_zoff, $fn = 128);
42 for (a = [0:120:360]) rotate([0, 0, a])
43 translate([-wall/2, 0, bearing_zoff]) cube([wall, bearing_d/2, bearing_h]);
49 translate([-wall, -wall, 0])
50 cube([wall + x_width + top_ins_w, wall, beam_h]);
51 translate([-wall, -wall, 0])
52 cube([wall, 2*y_height/3 + wall, beam_h]);
53 translate([spool_xoff, spool_yoff, 0])
55 cylinder(r = bearing_r1, h = beam_h, $fn = 6);
57 translate([0, 0, -eps])
58 cube([x_width+top_ins_w+eps, y_height+eps, beam_h + 2*eps]);
63 extrusion_clip(body_h = clip_h);
64 translate([spool_xoff, spool_yoff, 0])
70 for (x = [-1, 1]) scale([x, 1, 1])
72 rotate([0, 0, spool_angle]) holder();