Mendel Prusa quick change filament spool
by Wired1, published
Yet another Prusa filament spool dispenser, this one works nicely and is quick to change reels.
The frame top clamp clips into the frame without tools and the reels clip into the receivers on the top of each pole. I added a filament guide at the bottom to save the noise of the filament ratcheting along the top threaded rods and it works well even when the printer head is at the extreme ends of the x-axis.
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Print out the parts, the first STL file has all the bits for the support frame in one file. I have included the spool ends and spacers that work with the reels I am buying but you might need to change these to suit your suppliers reels.
You also need two 200mm long (8") lengths of threaded rod for the upstands and one 150mm long threaded rod for the axle plus 8 nuts and 8 washers.
Tap the rod tops to M8 or whatever your threaded rod is and screw them onto the threaded rods.
Assemble the filament guide and frame top clamps with a nut and washe above and below then clip it into the top frame of your printer before final tightening.
Check that the tops of each side of the clamp are the same height above the printer frame top rail.