Retired mechanical engineer. Career was mostly industrial automation machine design. www.zemlinphoto.com is my eCommerce site for 3D printed lens and camera accessories. I have 3 Raise3D N2-series printers that I've modded extensively, including replacing the OE electronics with Duet2 wifi boards. I also have two Daedalus printers from ProjectR3D. These printers needed significant work before they delivered usable parts. My latest machine is an X1C that I bought so I could have a machine to print fun stuff without breaking into my normal production.