It's a Prusa i2 I cobbled together myself from an electronics kit and bought printed parts (many of which I had to remake).? It's about 7 or 8 years old now.? It's paid for itself many times over, but it's getting a bit long in the tooth now.
Best modification I made was automatic bed levelling ... what a time saver, and I rebuilt the hot end to a slightly different design.? Other than tightening the belts periodically that's about all the maintenance it's had.
