Stepper driver trimpot aligner / screwdriver tool

If you want to align / set your stepper motor drivers, you need a non-conductive (plastic or ceramic) tool which is cheap but difficult to find. Fear not, because this is a working substitute made with PLA, with phillips and slotted version and screwdriver adapter.


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To start, this is a very difficult print. It might not work well in every printer.

Please try to print the shapes exactly as they are given, otherwise it will not work. No support. You can use brim, it worked for me, but you can also print without it. You HAVE to use PLA or another rigid material, because ABS is too flexible for this. I have tested the shapes in many positions and configurations, and these are the only ones which work. In fact, you need a very well calibrated 3D printer to get them right, specially the phillips and slotted tips, because they are quite thin.

The layer height also have to be at most 0.10mm; higher values won't work.

Please CHECK the gcode path before attempting to print! Wrong settings will spoil the print - again, this is a very difficult print. You might want to set XY compensation / horizontal size compensation to a value higher than zero (I have used 0.10mm) if the tip ends do not appear.

Once you have printed the parts you might have to sand them. Take care, the tips are thin and can break easily. If you need to enlarge an orifice, use a heated metal tip to do it. You might try a trick with the tip if it prints too rough: heat it with a lighter or a heat gun until it is soft (but not melting) and then dip it in the trimpot; hopefully it will conform to its shape.

Materials and methods

No extra materials are needed, but you can use the hexagon handle to fit in a common screwdriver handle.



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247fdd2bc9c3ccbaba7297452dbd0f9c?default=blank&size=40Perry Ismangil commented ago

Great, I can see them all now.

D165c637cbb69178d3bce77048c58ca4?default=blank&size=40Patola commented ago

Perry Ismangil, thanks for telling me. I don't know what happened but I reuploaded the files.

247fdd2bc9c3ccbaba7297452dbd0f9c?default=blank&size=40Perry Ismangil commented ago

I can't find the model file in the download zip.

Mini 3davatarPaulo Rodrigues added this to the Utility Stuff for 3DPrinter collection ago
Mini 3davatarPaulo Rodrigues added this to the Calibration Tools collection ago
Mini 3davatarPaulo Rodrigues added this to the Usefull Stuff collection ago
D165c637cbb69178d3bce77048c58ca4?default=blank&size=40Patola published this design ago