The rubber stamps are printed in flexible filament while the handle can be printed in pla. For the stamp I used Alchement - Flexible(TPU) and Hatchbox PLA. I use simplify3d so here’s a guide to printing the stamp handle and the rubber stamp: rubber stamp: For the rubber stamp I used 2 perimeters, 8 top and 5 bottom layers, 0.2 layer height, 20% infill, 250 extruder temp, 60 bed temp, no cooling fan and 30mm/s stamp handle: Your normal pla parameters should work with the handle portion. I printed it at 0.3 layer heigh, 5% infill and 2 perimeter shells. For the stamp holder portion you will need some support material. In simplify30 I used 50% infill percentage with 4 dense support layers at 70% infill percentage. Also a 0.60mm Horizontal offset from part. With this the support material should be able to pop off, in simplify3d at least. Rubber Stamp preparation: In order for the stamp to work as a rubber stamp you will need to sand the top portion a little to make it coarse enough to hold the ink. Once the rubber stamp is printed, lay a sheet of sand paper on a flat surface and move the rubber stamp in circular motions until its sanded evenly. I use a 150 grit sand paper.