Wiki. Luzern » New Ultimaker Extruder. This post ist the documentation of the development of a new extruder-unit for the ulitmaker 3D Printer. The one that is currently in use seems to have some problems with the soft ABS-material. The little diameter of the extruder bolt often digs in the ABS and in result, the material-flow stops. The new concept has three new approaches: – a big (60-80 mm) transport-weel-diameter could solve the „digging-in“ problem. – sharp cutter-blades cut into the abs without big resistance but give good grip. – a worm-drive gives a good transmission in a small package. currently the transmission is not big enough and results in missing motor-steps. I changed some elements of the first design, the ratio is now the same as the original extruder, but with a much bigger transport weel (and very sharp cutter teeth). It seems to work very smoth (a little WD40 was needed…) with a lot of power.
I also added a fast-lock-mechanism. We ad some new featues! Plans and Description will follow soon! Ultimaker Lasercut Drawings by Martijn. Building an extra large Ultimaker 3D printer. Ultimaker.