Simple Centerfinder
thingiverse
I couldn't help but think that there's a simpler method for finding the center after seeing Mobilow's center finder. While it might not look as impressive, it gets the job done and lets you draw a line right up to the edge. This tool comes in various sizes - 100mm, 150mm, or 200mm distances between the rods - each with 1mm and 3mm hole options available. If you need a different size, just let me know; I can switch it out in under 5 seconds.
Download Model from thingiverse
With this file you will be able to print Simple Centerfinder 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 Simple Centerfinder.