Version 4 is designed for short shaft PG35L-048 motors (8mm). This version has integrated bearing to appose idler tension. Use of the external bearing is no longer needed. Also, this body has a snap-in slot for a J-Head hot end which eliminates the aluminum slot plate. The snap-in idea was derived from scottmayson. This Micro Extruder has been tested on MendelMax and Prusa.
Go to www.ultibots.com for Hobbed Drive Gears and Bearings. MendelMax 1.5+ kits and printed parts are available for purchase.
Alibre PE source files included.
M3x40 bolts and M3 jam nuts for the idler (x2)
M3x25 bolts and M3 jam nuts for the motor mount (x2)
605ZZ bearings for internal and idler (x2)
M5x20 bolts and M5 jam nuts for the bearings (x2)
M5 washers (x4)
M4-10 bolts and M4 jam nuts to secure to x-carriage (x2)
You will need to remove and drill out the support layers on the idler and body.
Try our gear puller:
This extruder works well with AlephObjects Supa-Flat X-Carriage
The bearing holders shown are:
thingiverse.com/thing:15205, the last one on the download list.
01/10/13 - Added brimmless STL. Also has better internal breakaway supports.