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Dremel Flex Shaft Mount System For Mendel

by Laurencio Feb 14, 2011
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1) You need to grab the full shaft instead of only 4 points. That's not stable enough.

2) I've given up on milling because of dust (particularly copper dust) getting into the non-enclosed stepper motors, non-enclosed bearings and the non-enclosed electronics.
Are you sure your Mendel can handle LARGE amounth of FINE dust?

(moved) dremel milling toolhead for RepMan

I forgot to say that the bottom part is actually threaded...the flex-shaft has a part you can take off and there is a thread under-neath - it's rock solid when I'm holding it..it might be ok :) thanks for the tip though I'll take note..

About the fine dust...umm well my friend and I are working on a derivative of reprap which will fix this problem I think.

on my reprap all the electronics are enclosed underneath so that's one area I guess which is safe

It's not just the electronics you need to worry about... stepper motors, threaded and smooth rods, connectors... depends on the grade and conductivity of the dust.

But the steppers is a big problem. To do milling you really want an enclosed work volume, with everything frangible outside.

Would a large powerful extraction system help sort out this problem?


Extraction system works great. Make a adapter from your vacuum hose to a cylinder (approx. 2" diameter) of paint brush bristles. The bristles go around the router bit from your flex shaft adapter to the pc board. The bristles form a conduit which to suck the debris through. Shop vacuum loud, dust collector is quieter. Connect 2 wires to the Z-Limit switch. Touch one wire to the router shaft, or bit (router off) and the other to the pc board. When the router bit touches the pc board You now have auto Z zeroing.

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