


I then just buy Bulk Kilogram spools that last for numbers of parts and can be exchanged without having to bother about buying a new over priced cartridge. Currently, I have had to roll back the firmware to allow the cartridges to run out and by some strange programming this firmware allows you to continue to run even with empty cartridges. The cartridges are about $100 US and as a result are a secondary income stream for 3D systems. There is a length chip that stores how much filament you use and when it thinks your out it locks the printer. The Cubex printer was very expensive and it comes with a number of filament cartridges which as far as I can figure only contain about 500 grams of filament. I come from a background in extruded plastics and figured the concept of extruding plastic into ever connected rings was fascinating. At the time that I bought the Duo I did not have much of an understanding in how 3D printing worked.
