E3D Titan Extruder Upgrade for Prusa Steel Igus bearings

thingiverse

I'm building a Prusa Steel v4 3d printer with a 20x30 cm printbed. I will use a Titan extruder from E3D, a short body Nema17 motor and Igus bearings. The Igus bearings are very sensitive to compression so they will stick very easily. I used the excellent E3D Titan Extruder Upgrade for Prusa i3 from GyroBot as a base and changed to geometry of the bearing holders to be able to use Igus bearings. I used a 2.3 mm drill and an M3 taps to make the threads. I use a short body Nema17 motor and the weight of this package is less than the weight of a normal Nema17 motor. The reason I want to use this type of extruder instead of a bowden type is that I plan to print very soft Filaflex. Update 2016-12-12 I use the x-axis parts designed by toolson http://www.thingiverse.com/thing:1036871. The first version was based on the design from Gyrobot. To make it compatible with toolsons design I had to offset the belts 5mm. I named the new part x_carriage_toolson.stl. The yellow part is compatible with the part from Gyrobot. The red part is compatible with parts from toolson. Update 2016-12-19. Added a holder for the BLTouch. I don't know if it will work so please let me know if you find any problems with the remix. It was a bit difficult because the Igus bearings needs to be pushed in from the sides and the holder from http://www.thingiverse.com/thing:1552022 would interfere with that, This part is made as two separate objects so that it can be easily reconfigured. It needs to be printed with support. You also need the rest of the parts from http://www.thingiverse.com/thing:1552022 to make a complete unit. Update 2017-01-01 Added a new version for bltouch holder and imuu8 bearings. Update 2017-06-21 I use the fan holder from here: https://www.thingiverse.com/thing:1571526 Print Settings Printer: Vertex K8400 Resolution: .2 mm Infill: 20% Notes: Only the version with the BLTouch needs to be printed with support. Post-Printing How to make the Igus bearings fit If you just print this part and try to use it, the bearings will probaby stick. The trick to make it work is to print it in PLA. First mount the bearings and the steel rods. Then heat the holder using a heatgun so that it gets a little warm. Don't melt it, just heat it enough for the plasic to become a little soft. It will harden again when it cools down and the bearings will fit without being under preassure. To make the bearings stay in place and not slide out of the holder they need to be held in place by M3 screws and a washer as you can see in the pictures.