Centrifugal sander - quickly sand any diameter inner tube with a dremel!
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An adapter for sanding the interior of any diameter tube with a dremel-like rotary tool. For 6.5mm rubber mandrel
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Model information
- Source
- Printables
- Category
- Tools
- License
- CERN Open Hardware Licence Version 2 - Strongly Reciprocal
This is a sanding tool for the usual 6.5mm rubber mandrel that comes with most dremel tools.
Place the tool on your rubber mandrel and tighten the screw through the top hole, then place sandpaper in the middle of the tool, slightly offset from the center and roll it so it fits inside your tube, then start the dremel and watch the magic happen!
If you're sanding plastic, some battery powered tools may not be strong enough to work it dry and won't start, in this case, add water to act as lubricant.
Printing
The inner diameter of the design is 67mm, I printed mine with a 0.6mm nozzle, Elegoo PLA+ and this leads to the shrinking to be perfect for the 65mm mandrel. This may not be the case for 0.4mm nozzles. I've included the .STEP file so you can modify or scale it accordingly
It should print fully solid with default settings for 0.6 and 0.4 nozzles due to it's size. Make sure to check for gaps in the slicer, and if they are present, increase the amount of walls.
Safety
Use breathing and eye protection PPA. You are rotating plastic at high speed and sanding, pieces can break off and blind you, people near you, or finer particles can end up in your eyes or in your lungs.
I am not responsible if you end up blind or with lung problems because you were careless.