Product page (not sponsored): CoLiDo DIY
This is my first 3D printer. I took it offline and packed it away for a while due to technical issues, but during the 2020 lockdown I pulled it out of storage. I rebuilt, upgraded, and tuned it to the point that it actually prints better than the other printer at the moment.
It prints using 1.75 mm PLA filament on an unheated print bed. Originally I controlled it using Repetier software, but now I slice the files with Simplify3D and control it via Octoprint running on a Raspberry Pi.
Here are the relevant posts on my repair and upgrade process: