Letter Opener?
thingiverse
Another letter opener! I designed this years ago, but only now thought of uploading it to Thingiverse. This sequel to this guy (https://www.thingiverse.com/thing:578807) is more robust with no pivot pin. Just print with the blade flat and the handle laying on its flat back, snap together, then open all the envelopes!
Download Model from thingiverse
With this file you will be able to print Letter Opener? 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 Letter Opener?.