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The M2 from Makergear is not shipped with nor do they supply a 3mm version of their extruder for it. I redrew the extruder in cad and modified it to work with 3mm filament.
I am new to 3D printing and this is my first printer so I am still getting used to it all. Most of my issues have been with the settings in slic3r. I have not managed to print a part with support that looked at all decent so I built the only support needed into the file. If you desire I will work on and upload a no support version.
So far I have printed about 750 grams through it with no issues. I am getting a little bulging in the corners on a cube but that is likely a setting I need to change.
The V2 file has larger clearances on the bolt holes and inset for the stepper. I did not include the support in the bearing slot like the first file so it should be printed with support enabled. If you want the built in support back leave a comment and I will work on that as well.
Somethings to keep in mind when embarking on this quest. The guide tube that is supplied with the M2 is not going to be big enough for the 3mm filament so you should get a 6mm OD X 4mm ID PTFE tube to replace it. I tried it without the tube and I think it puts to much side pressure on the X carriage while printing. You will need a 3mm hot end from Makergear. You will need to re-determine your Z-offset since the new head is likely to be at a slightly different height than the old one.
When I printed the final version I was having some bed adhesion issues and so had cranked my temperatures up fairly high so I think that my print had sagged a bit and the holes were just a bit small. Instead of reprinting it I drilled the holes and installed it. If you find the holes to be to small I can modify it for more clearance.
I went with 100% infill and no support.
The slot where the hot end goes is meant to be really tight to hold the hot firmly. Clean out any stray plastic and carefully mash it in. I used a pair of slip joint pliers with a protective peace of plastic between the jaws and the hot end. When you look through the filament hole you should see the center of the hot end right in the center of the hole.
The bearing is a 625 and a 5x18mm bolt will work. The clamp bolt is a 4x16mm. You can use the current bolts going into the stepper.
3mm Extruder for Makergear M2 by Xezerk is licensed under the Creative Commons - Attribution - Share Alike license.
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