include module beam(){ cube(size=[topbeamthickness, toplength - 2 * topsidethickness, topheight], center=false); echo("#### Top beam: length = ", toplength - 2*topsidethickness + 2*topslitdepth, " height = ", topheight, "width = ", topbeamthickness); } module topside(){ color("red") cube(size=[topdepth, topsidethickness, topheight], center=false); echo("#### Top side beam: length = ", topdepth, " height = ", topheight, "width = ", topbeamthickness); } beam(); topside();