28cm radius
thingiverse
a thing that is curved with a 28cm radius. It can be used to check both inside and outside radii. I used it to check the curve of a plastic barrel.
Download Model from thingiverse
With this file you will be able to print 28cm radius 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 28cm radius.