{
  "key": "Nifty_hole_through_cube",
  "content": "include<BOSL2/std.scad>\nsize = 20;\n$fa=1;$fs=.3;\ndiff()\n  cuboid(size)\n     attach(TOP,TOP,inside=true)\n     cyl(h=size,d=4,rounding=-2,extra=1);  // extra adds length to avoid z-fighting\n"
}