BMG for MINI
Description
This is a BMG extruder for the Prusa MINI. There are several others posted, but there was something wrong with each of them, and none of them had CAD geometry available. I ended up taking the STEP files from the "Bondtech BMG MarcoZ76 Edition" and designing from there. There's actually not much of it left. The idler door part is unedited. I was using the molded part that came with the standard BMG clone that I bought. I never printed it. The extruder exit is threaded for some supposedly PC4-M10 fittings I had. It's not actually a standard M10 thread. It was some sort of tapered thread that I determined and subsequently forgot. If it doesn't match yours, you'll need to edit either the STEP or Fusion 360 source files. I didn't end up using this for long, but it assembled easily and fit nicely on the printer. The BMG clone I bought was cheap, and the gears were quite noisy. The were noisy in the molded housing and still noisy in this housing. I fixed the problem I was having by replacing the nozzle with a genuine E3D part (my Mini is a fysetc clone). The original extruder is working great and is much quieter. I just wanted to make this available for anyone who might want to use it or further refine it. The Housing needs support on the one overhanging surface. No other support is needed.
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