I can't get this to push filament very well. It is skipping steps even with the pot turned up on the driver. The motor shaft has too much wobble without the external shaft support.

Could you provide a version of the STLs without the built-in brim ?

For pulling the aluminum gear, I simply sawed it off with a metal saw (and made a useful flat on the shaft without realising it).

is there anyway to convert the source files to openSCAD by chance? If not how about converting the bearing size to 623zz or 605zz? I would be more than happy to do the work, but dont have Ailbre.

thanks,
matt

Brad, I've given up on trying to fit the extruder above the print platform on the standard Rostock, just not enough room. I tried modifying your PRT file, but my skill at Alibre PE is quite lacking. Anyway, what I'd like to do is modify this design to mount below the platform. What would have to be done is to trim out the bottom so that it looks like the top, with curved ends to minimize weight and interferences. The top, which would attach to the print platform, would be squared off to attach to the 4mm bolt holes on the platform. These would be 43mm apart, centered on the filament feed hole, with inserts for mounting 4mm nuts.

If you want to pursue this, I think you might have another product which you could offer.

Be happy to go over this in detail.

Thanks so much,
John

For this eminebea motor, could someone help me with its wiring... Maybe im just a newbie, but I certainly dont want to burn it or my driver up! Thanks in advance!

Oh, and I just used my garage gear puller on the fixed gear on the motor. Easy-peasy. http://www.harborfreight.com/1...

Already printed one, and promptly started hacking away at it to fit within the confines of my Delta Rostock print platform. Looks like the motor hitting the delta arms will constrain the motion of the printer somewhat, but still will be something like 220mm by 180mm build area.

Thanks for the design, really like the built in supports for printing. Got a little sloppy for the idler bearing support, but it will be fine with the washers and 4mm bolt in there.

Do you suppose I'll need to do something to the feed holes to use 1.75mm filament with this?

Getting those gears off is certainly quite the adventure. I bought 20 of the PG35L's with the gear attached. I tried all kinds of printed solutions, various Dremel cutting wheels and just plain cursing at the damn things. In the end I wound up using this tool and lube to get them off.

http://www.amazon.com/gp/produ...

http://www.amazon.com/Gun-Oil-...

The lube goes on the threads for the faucet puller and makes a huge difference in getting the gears off! I also put a drop on the tip of the PG35L shaft as well to help protect the tool and motor from excess friction.

Thank you so much for the modified short shaft design. I thought I was going to wind up using these motors as paper weights forever!