Height adjustable router support for rotary tool

by topias5, published

Height adjustable router support for rotary tool by topias5 Dec 24, 2015
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Grade & Subject


Engineering Technology


9th Grade

Design Tools

Vertex G4

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15544Views 4161Downloads Found in Machine Tools


This gadget converts your rotary tool (i.e. Dremel) to a handy router. The inner thread of this gadget is compatible with most Dremel-like tools. The height can be adjusted by turning the knob part. The thread pitch of the adjustable mechanism is 2 mm so each half a turn lifts the tool 1 mm. Total movement of the lift is around 20 mm depending the machine is used. I've tested the gadget with Bosch GRO 10,8 v.

See an example groove cut on Youtube:

Print Settings

Printer Brand:



Ultimaker 2


Doesn't Matter








Threads of the adjustment ring has designed tight that it wouldn't have any backlash. At the very beginning the adjustment ring didn't run smoothly but after a while when all the excess print material was worn out it starts to work properly. I also applied a bit of silicon spray to the threads to lubricate the adjustment system.

How I Designed This

The gadget is designed by using Vertex G4 software.

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Really nice work. I had to make some minor scaling changes to get a good fit but that is to be expected on things with tight tolerances.

Work good, but if you can upload Hars socket which will be twice higher, it would be super. Need it for old Battery dremmel. THX

Mar 25, 2017 - Modified Mar 25, 2017
topias5 - in reply to JarynTauryn

Hi! I'm not sure did I make right changes, but check the hars_socket_extra_long.stl model. Remember to print the part upside down.

Feb 27, 2017 - Modified Mar 1, 2017

Sorry, my last comment was harsh i was pissed. But i got it to work. But i had to work the threading in a bit. Finally i got a nice fit.

Feb 27, 2017 - Modified Mar 6, 2017
topias5 - in reply to MikeyWires

Sorry to hear you didn't manage to build this up! Tolerances of this thing are small so the printer must be well calibrated.

This definitely works, but make sure your printer is working properly! Try to re-print the screw part and scale it up little if that is the problem in your case.

E: Nice!

Nice work!

If you made the "Square" hole where you can see the router bit with larger radius the print would be even better because the bridging would be shorter. Its nog a big problem but i experienced some strings when building the "bridges".

Good point! Maybe a facelift version is needed! :)

Nov 30, 2016 - Modified Nov 30, 2016

Really great work! However the middle part(hars_socket) prints better and doesn't need support when upside-down, rather than the position in the current stl file. I recommend you to turn it around. Thanks for this excellent project, really appreciated.

Thanks for your comment! I updated the socket part stl file by rotating the part upside down.

Comments deleted.

Very nice work
the body and the socket needed a fair bit of filing
the nut had to be printed 1mm larger along X and Y, leaving Z constant and now it slides perfectly on the socket ;)

Excellent, I love it ;)
thx for sharing