Hands-free door opener for M3 nuts

Hands-free door opener that helps you to preventa a direct contact with the door handle. This is a modified version of the original design by Materialise, which you can find here: https://www.materialise.com/en/hands-free-door-opener/technical-information

I made their design work with M3 nuts and bolts which are more common for 3d printing enthusiasts.

Stay safe.