MakerGear M2 Printer Spool Holder -- 3/4" End Caps

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The filament spool mount on the MakerGear M2 works great -- if you have the thick-edge spools like MakerGear uses. For other spools, the mod suggested by http://www.thingiverse.com/thing:37210 works way better (and both can be mounted simultaneously for easy switching). Unfortunately, MatterHackers and some other filament vendors often use spools that have very small core holes, and the rod suggested by Thing 37210 will not fit through.... This is a simple push-on end cap with an interior designed to firmly grip a standard 3/4" wooden dowel as shown. Without these silly little end caps, the uneven winding of some spools can cause the dowel to walk out of the spool... which would be bad.

About the author:
ProfHankD
I'm a Professor of Electrical and Computer Engineering at the University of Kentucky, best known for things like having built the world's first Linux PC cluster supercomputer in 1994... although around the 3D-printing world I'm probably best known for my HingeBox (which Tested popularized). My research group (Aggregate.Org) really is about improving computing systems by making the various SW+HW components work better together, which we do for many different types of computer systems: supercomputers, digital cameras, ... and now 3D printers. I had some experience with tool and die making using Bridgeport Series I CNCs as far back as the late 1970s, but my 3D printing adventure started in late 2012 with purchase of a MakerGear M2 for my lab to make custom camera parts in support of computational photography research. I now use multiple MakerGear M2 and Wanhao I3 3D printers, several semiconductor laser cutters, a 3040T CNC mill, a programmable paper cutter, and a small vacuum forming machine.

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