All good things › Forums › Morgan Builders forum › RepRapPro mini extruder
- This topic has 11 replies, 2 voices, and was last updated 8 years, 9 months ago by Quentin Harley.
May 28, 2014 at 19:29 #4069
In case anyone missed it…
Is this still the preferred extruder? I just ordered some brass and tooling to make the hobbed adapter. Went with 3/8″ (.375″) diameter stock which is pretty close to 10mm at 9.95mm plus some 6mm taps for hobbing.
May 28, 2014 at 22:16 #4073
Yes. This is probably the most robust printable 1.75mm extruder out there. Kudos to Reprappro for the initial one (more than good enough for normal clean hot-ends)
Modified it to use cheaper bearings, and sport beefier filament pushing power.
Managed to print a whole roll of filament through a blocked hot-end…
May 28, 2014 at 23:02 #4089
Awesome! I have some bearings on order and enough brass stock to make several hobbed adapters. I’ve hobbed a couple of steel bolts and I’m hoping brass will be a little easier to work with.
I was a little worried about the press fit small gear but if it gets the Q seal of approval \o/
May 29, 2014 at 01:14 #4101
Oh Quentin, You say you used a 6mm tap for hobbing?
May 31, 2014 at 11:23 #4149
The plain 5 spoke gear on the extruder is just way to pedestrian for a Morgan:
May 31, 2014 at 18:55 #4161
Yes. M6 makes the teeth a decent size – helps prevent the extruder eating away at the filament.
Nice looking gear you’ve got there
June 1, 2014 at 17:40 #4189
The knobs on the sides will make it easier to turn manually as well.
June 1, 2014 at 22:56 #4201
It printed pretty well:
I was thinking about painting it red to give it a “steam valve” look. Gonna have to keep paint out of gear teeth though…
I also rigged up a simple slip fit extruder bracket that will make it easier to remove the assembly for fiddling. It seems pretty secure for now so hopefully it will stay put during operation.
June 2, 2014 at 22:30 #4241
Tell me, did you have to modify the extruder to fit the push-fit PTFE pipe fitting? If so, what was required?
June 3, 2014 at 00:57 #4257
Thanks Q! I just changed the stl a bit and made a counterbore on that end. I didn’t worry about threads because I have a tap. You could probably get away with no threads because the threads are shallow.
I’ll post up some dimensions.
I have push fits on my other printer and wouldn’t be without them. Not entirely necessary but a nice upgrade!
I’m waiting on some taps and stuff to make the hobbed adapter. Hopefully I can help some folks out who don’t have the equipment to make one.
June 4, 2014 at 00:16 #4289
I am about to get e3d V6 hotends, and push fit one side will need push fit on the other side.
May 31, 2014 at 21:49 #4173
Thanks Q! I thought 6 spokes a bit busy:
I’ll upload stl after I print it if it looks OK.
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