dremel milling toolhead for RepMan
by MarcusWolschon, published
Feel free to adapt it to other printers like Mendel, Darwin and Makerbot.
It should work fine for milling 3d-objects (Skeinforge) and PCBs (visolate) or for exact drilling (drill holder attachment) and cutting (90Â° attachment and cutting-disc).
You need a Dremel Flex Shaft Attachment (Model 225) and a Dremel as well as an M5x95mm(or longer) screw or threaded rod for this.
(I used bitsfrombytes.com/forum/post/3d-model-toolhead-attachment-design-alternative-heads )
Update: I made a Video (http://www.youtube.com/watch?v=aOt_yXAkMrs) of my first tests of PCB milling using this toolhead. It performed well given that I fitted a way too large milling-bit and did not tighten/block the springs holding the print-surface.
Update: Experimental Skeinforge settings for milling are documented here: bitsfrombytes.com/wiki/index.php?title=Milling#milling_in_3D
(Details: bitsfrombytes.com/wiki/index.php?title=User:MarcusWolschon/Challenges )
Get 10 small mendel parts or 2 larger ones or your design printed for
adapting this RepMan Dremel milling-toolhead to fit the Mendel.
Note that you will probably have to design a new x-carriage-lower_1off or even also a x-carriage-upper_1off due to the poor design of the Mendel x-carriage regarding mounting alternative tools that are wider then 22mm.
5 additional small or 1 large parts if you can do it so extruder and mill can be switched with 4 or less easily accessible screws.
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Tried printing this with RepG28 and Skeniforge35 @ 0.32mm layers and yes the model and gcode did look "broken" but it printed reasonably OK. There are a few (8-10 at a guess) single layer thick planes inside the top of the cone, the first 3 of which can be easily removed with a scalpel/knife and the rest of which can be reasonably easily removed using a dremel with the brown tapered grinding stone. Once cleaned up this fits the dremel extension very well!
That thing was made in Blender a long long long time ago.
No, there is not.
Back then it skeinforged and printed fine.
(The only one I ever made in blender. Gave it up afterwards.)
If you can repair it or use the meassurements to construct another one
(this one follows the curve of the flex-shaft very well to reduce any shaking),
please tell me. So I can link to it.
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2. remove the collet nut and collet
3. insert the Flex Shaft into the toolhead, turn it to move the black threading through the opening at the end.
4. re-attach the collet and collet nut, thus fixing the Flex Shaft in place.
5. replace part 10056 of your RepMan with this toolhead, leave the extruder attached to the electronics or attach a resistor of 100KOhm(840 to 920) to identify this as a router. (http://rapmanv3.blogspot.com/2009/06/machinefirmware-manual.html)
6. attach the long M5 screw to touch the Z endstop at the correct height for the milling tool you inserted into the Flex Shaft.
7. Have fun!
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