Center Finder
thingiverse
This tool lets you easily locate the center of nearly any circular surface. Print it out using a strong material with somewhat liberal infilling, and have the notches spaced 1 cm apart, exactly 10 mm apart, so you can get the precise spot needed every single time. To find the center: Position the tool on your round face. Snap a straight line across its middle bar. Spin the object around to just a quarter of one complete rotation. Snap another straight line in line with that bar right now again! Finished!
With this file you will be able to print Center Finder 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 Center Finder.