translate([fuse_tube_d/2 + wall/2, -thin_wall/2, fuse_tube_l - eps])
cube([eps, thin_wall, eps]);
translate([fuse_tube_d/2 + wall/2, -3*stab_tube_wall/2, stab_tube_d+1.5*stab_tube_wall])
translate([fuse_tube_d/2 + wall/2, -thin_wall/2, fuse_tube_l - eps])
cube([eps, thin_wall, eps]);
translate([fuse_tube_d/2 + wall/2, -3*stab_tube_wall/2, stab_tube_d+1.5*stab_tube_wall])