MakerGear Simplified Extruder Block with Quick Release
Description
This is designed to be a drop-in replacement - the only additional parts you will need are some screws for the hinge and the top retainer. Since I'm in the US, I sized the hinge screw as a #6; 1.5" should do the trick. The top screws were loosely sized for a #6 but could probably fit many other sizes; I'd recommend at least 2.25" or 2.5" length on those ones. The rest of the screws use the MakerGear hardware (M4 with M4 nuts on the block mount at the base, M3 on the extruder stepper mount, 5/16" for the bearing hole.
As requested, I made two versions: one with a bigger filament hole for 3mm (oversized @ 4mm) and one for 1.75mm (oversized @ 2.5mm). If you would like any small variations (like different screw hole sizes) please let me know!
Instructions
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I love my Makergear extruder, but was having a lot of jams when I switched to 1.75mm.. This fixed the problem completely. I can't recommend this highly enough to anyone printing 1.75mm filament with a Makergear extruder.
Did you do this in OpenSCAD or a graphical CAD package? Any chance you could put up source files?
do you get a lot of jams with the brutstruder design?
There were 3 things that would cause it to jam or me:
1) Feeding too fast (usually happened when first learning to print)
2) Temp too low or too high (usually from experimentation or forgetting that the nozzle heat gets turned off after a print :-) ).
3) Too much backpressure due to the nozzle too close to the printbed or too much plastic being extruded on the part.
On a perfectly tuned machine, none of these would probably be an issue... but I'm not quite there yet (and I know quite a few people on IRC who are still tuning their machines as well). So, this makes my life easier and I hope it helps out others as well :-)
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I like the idea and what a nice benefit that it actually reduces the occirance of jams as a side effect. I printed two of these out so far. One issue I had is with the overhangs they did not print great.
I was thinking there is no reason to have the overhangs they could go down all the way to the table without effecting the function and that would make it easier to print and print more cleanly. I was able to clean mone up with a dremel. But I would like to make a deriviative without the overhang.
Please post a version in STEP format so I can edit it. Also good work! :)