Safety Stop Switch Mushroom Button Cover for MiniMill
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Add a quick stop button to the mini-mill.
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Public Domain
Designed and printed this for a friend, but I liked it so much I made one for myself too.
This print is for specific models of bench-top mini-mills that have the type of switch shown in the photos (for example, the HiTorque MiniMill sold by Little Machine Shop).
The print add a large easy-to-access button over the existing Off button. To mount the new button, simple remove the existing switch cover and replace it with the new “button cover” using the same mounting screws.
Note that the existing switch and cover are held on by flat-head machine screws and nuts. You will need to open the switch panel to access the nuts by removing the fours screws at the corners of the panel. After remove the screws and nuts holding on the switch cover (and removing the cover), use the same screws and nuts to fasten on the new cover.
Assembly
[See photos] Insert the Sleeve into the Cover - this is a tight fit so you will need to press it on firmly (no glue required). Insert the Stem piece into the Sleeve so that the flat part will contact the stop button, and the Stem collar is captured by the Sleeve. Place the Button onto the top of the Stem - I recommend applying a small amount of glue to the groove in the Button first.
Place the assembled cover over the existing switch so that the new “mushroom” button is over the existing stop button; use the screws from the old cover to fasten the new cover in place.
Print Instructions
Print in PETG using the 3mf or gcode files provided. In general :
- perimeters = 4 (2 perimeters for the Button)
- 15% rectilinear infill
- orient prints as shown in the photos
CAD
The OnShape 3D CAD files for this are here :