Elfa Quilt Ruler Hanger/Hook
thingiverse
The hooks that come with an Elfa Board are not great for the square quilting rulers. These were much better. I've attached the Fusion 360 file if you'd like to customize things.
Download Model from thingiverse
With this file you will be able to print Elfa Quilt Ruler Hanger/Hook 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 Elfa Quilt Ruler Hanger/Hook.