For the purposes of the projects documented here a basic FDM printer is defined as an open framed printer much like the venerable Creality [[Ender 3]] or Prusa MK4. They dont have heated chambers so can really only print materials like [[PLA]] and [[PETG]] reliably. If they are [[Direct Drive]] [[TPU]] might also be an option. The carbon/glass fibre reinforced versions of [[PLA]] and [[PETG]] can also be printed on these systems with the right nozzle, namely a 0.4 or 0.6mm hardened steel or gemstone one. # Which Ones Would I Recommend? These styles of printer are cheap and readily available. If I were to recommend one to someone I would first say to buy a better [[Enclosed and Heated FDM 3D Printer]] like the Prusa Core One. But if budgets are tight you cant go far wrong with the [[Ender 3]] by Creality (basically any version of it since there are 10+ variations out there now). Get one second hand on eBay and learn to fix it yourself when it breaks and even upgrade it with new hardware and software. For a more plug and play experience the Bambu labs A1 and A1 Mini are solid printers but Bambu Labs is a really terrible company and I doubt those printers will be as open and free to use as they are now going forward. Prusa is in my opinion the gold standard and where possible I always recommend the [[Prusa Core One]]. I try to update this page frequently as trends in the 3D Printing change. I often get asked what to buy by people looking to get into FOSS hardware, my answer is generally if you can get a Prusa.