Universal switchgear cabinet key

by geobruce, published

Universal switchgear cabinet key by geobruce Feb 1, 2013


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18936Views 5690Downloads Found in Hand Tools


This key is my first 3D object made with openscad. I chose this for two reasons.
It's a nice object to learn how to work with openscad.
And more important: I think every geek, hacker, technician want to have this tool in their toolbox!!!!

This key fits on a lot of cool things.
I tested it with trafic lights and street lights
but this will also work for
For control cabinets, shut-off systems in gas, water and electricity supplies
For technical installations in buildings like air-conditioning and ventilation systems, shut-off valves, mains switchboards etc.

please post your results in the comments ;)


This is just a replica of the key you see in the picture which is made in metal.
If you want to print it in plastic (which i did) it may be not strong enough so you can size the diameter of the cylinders up (openscad) so you'll get a heavy duty model.

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I've tried to print this tool but it's not high enough. It looks like there are some missing layers. Any advices?
printer: Creality CR-10
settings: PLA, 210, 100%, 0.1, 25mm/s and 20% infill

I printed it with a PRUSA i3, and it came in good with 200ºC and 100% infill PLA.

Ive used these type of keys when i was an industrial maintenance mechanic and some locks can be really tight. Should be good for a while

It should work a few times. Scaling up the outside dia, may not work, most of the locks I see daily are restricted in the outer dia. (PLA might be the material of choice. I have yet to try PLA, have a roll, just haven't tried yet; lazy)

I've one laying here with the outer diameter as big as the diameter of the end tops with the holes in, I tested it today on several locks and it's strong enough.
printed in ABS