I spent the better part of 2019 compiling all my 3D printer knowledge into a mega guide on everything you need to know about sourcing the parts and building your own 3D printer. If you have a couple spare hours (it's a long video), then checkout this guide that covers topics spanning extruders to microstepping. I built a custom IDEX 3D printer (that I just posted to the OpenBuilds Projects) as a teaching tool for this video and may be of interest to the more advanced members of this group. Any constructive feedback would be helpful! Link to the video: P.S. Not sure why the video thumbnail looks like a potato.