eps = 0.01;

bearing_d = 32 + 0.3;
spool_d = 52.5 - 0.3;

cyl_wall = 1.5;
body_h = 8 + cyl_wall;
bearing_side = 2;


difference() {
	cylinder(r = bearing_d/2 + 2*cyl_wall, h = body_h, $fn = 256);
	difference() {
		translate([0, 0, cyl_wall])
			cylinder(r = bearing_d/2 + cyl_wall, h = body_h, $fn = 256);
		for (a = [0:60:360]) rotate([0, 0, a])
			translate([bearing_d/2 + cyl_wall, 0, 0])
				cylinder(r = cyl_wall, h = body_h, $fn = 4);
	}
	translate([0, 0, -eps])
		cylinder(r = bearing_d/2 - bearing_side, h = cyl_wall+2*eps,
			$fn = 256);
}

difference() {
	cylinder(r = spool_d/2, h = body_h, $fn = 256);
	translate([0, 0, -eps])
		cylinder(r = spool_d/2-cyl_wall, h = body_h + 2*eps, $fn = 256);
}
for (a = [0:60:360]) {
	rotate([0, 0, a])
	translate([bearing_d/2, -cyl_wall, 0])
		cube([spool_d/2-bearing_d/2 - cyl_wall/2,
			2*cyl_wall, cyl_wall]);
}