3 module slider(len=20, margin=0) {
4 translate([-10,0,0]) cylinder(h=len, r=8+margin, $fn=6);
5 translate([1,0,0]) cylinder(h=len, r=8+margin, $fn=6);
10 translate([20+(35/2),0,0])
14 translate([-17,-10,7]) rotate([-90,0,0]) slider(len=20);
16 cylinder(h=30, d=35, center=true);
17 rotate([0,0,-45]) cube([35,35, 20],center=false);
18 translate([-34,0,0]) cube([4,40,40], center=true);
24 //%translate([20.5,0,0])
26 translate([-12,0,30]) cube([17, 20, 60], center=true);
28 slider(len=60, margin=0.2);
30 translate([-10,-8,58.5]) sphere(r=1.5);
31 translate([-10,-8,1.5]) sphere(r=1.5);
35 translate([0,0,5]) rotate([0,-90,0]) cylinder(d=4, h=30);
36 translate([0,0,55]) rotate([0,-90,0]) cylinder(d=4, h=30);