seam_allowance
thingiverse
This is a simple tool to draw a 7mm or 10mm seam allowance to your pattern.
Download Model from thingiverse
With this file you will be able to print seam_allowance 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 seam_allowance.