19 module Tongue(tw,tt,ad){
21 translate([-tw, 0, 0])
22 cube([tw, ad, tt+strapthick]);
23 for (y=[thick+0.1, ad-ridgewidth-strapwidth])
24 translate([-tw-1, y, tt])
25 cube([tw+2, strapwidth, strapthick+1]);
31 translate([-holedist-tabside, 0, 0])
32 cube([tabside*2+holedist, thick, tabunder+tabover]);
34 translate([x, -1, tabunder])
36 cylinder(r= holedia/2+0.5, h=thick+2, $fn=20);
38 Tongue(tonguewidth,tonguethick,totaldepth);