#!/bin/bash PARTS=( "slip_coupling" "magnetic_coupling" "mount_plate" ) for part in "${PARTS[@]}" do stl="./stl/takeup_${part}.stl" openscad -o "${stl}" -D "PART=\"${part}\";" "./takeup.scad" done openscad --preview -o debug.png -D "PART=\"preview\";" "./takeup.scad"