The Pursa i3 MK3. The whole thing is open source including all the part designs, hardware and firmware. The creator also designs guides to upgrade your old prin

The Pursa i3 MK3. The whole thing is open source including all the part designs, hardware and firmware. The creator also designs guides to upgrade your old printer to work better when new designs come out so instead of having to buy a new device every 2 years you just read the manual on making your old device work like the new one.