circle cutter
thingiverse
littel helper to cut perfect circles. Additional parts needed: Pin Exacto blade (http://www.amazon.de/Wedo-7821-Ersatzklingen-Hobbymesser-Kunststoffbox/dp/B000KT9C3W/ref=pd_sim_229_1?ie=UTF8&dpID=41qxHMOdRBL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=0SQK36G9960S9AV7AB2F) M3 bolt (min 6mm legth)
Download Model from thingiverse
With this file you will be able to print circle cutter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on circle cutter.