Posts

Showing posts from March, 2020

Managing Steel Sheets on Prusa 3D Printers

Image
The Prusa MK3, MK3S, and MINI all use removable steel sheets as a printing surface. Removable sheets have several advantages over their older non-removable predecessors: by removing and flexing the sheet inwards or outwards, parts pop off much more easily, and when the sheet wears out, it is easily replaced. They're held down to the heat plate with rare earth magnets, so they don't move around during prints but are very easy to swap.

Sheets come in two flavors: smooth PEI sheets, and textured power-coated sheets (I personally use the smooth sheets for PLA, and the textured sheets for PETG). Since I basically manufacture WLAN Pi cases on my small farm of three Prusa MK3S printers, I have several sheets running around (three textured, one smooth).


One natural attribute of spring sheets is that they vary slightly in thickness, so they each require a bit of tuning; the nozzle must be calibrated the correct distance from the sheet. Too far from the sheet, and the plastic won't …