If you just want pillar feet for your Raspberry PI (or any other electronic board with holes like Arduino etc.) and don't need a housing or a full frame bed, this might be something for you. All 4 pillars printed at once faster than 10 minutes. The picture shows pillars printed in about 7 minutes on a Printrbot Simple Metal using ABS at 0.2mm layer height. Printed with ABS with layer height 0.2. They will easily print in PLA as well.