Flap sanding attachment for rotary tool - smaller versions by Ziddan

Last crawled date: 3 years, 3 months ago

Remixed the Dremel Rotary Sander V2 by OldGaf into a smaller version with fewer flaps to allow my weak no-brand rotary tool to be able to spin it up properly.
It still uses the same attachment system, ie one of those tighten-screw-to-expand-rubber-thingies meant for the little sandpaper tubes.
Use jig2 from https://www.thingiverse.com/thing:3017214 to properly size and bend the sandpaper strips, after marking the width i cut the sandpaper with an hobby knife and a steel ruler.
ADDITION: Went ahead and made a micro version too, it requires the sand paper strips to be bent the other way.
Designed it so that the paper is leaning back from the direction of rotation since i figure that will give less drag and possibly hit whatever is being sanded with larger area of the paper but i wont know before ive tested it.
Since there is less paper it will obviously wear out quicker but should allow for getting into even tighter places and possibly also work with lower power rotary tools.
Will test print it as soon as the stuff currently on the printer is done.
ADDITION2:
The micro works but i still wasnt happy with it so i made a bench sander from left over RC parts, added versions with the hole to changed to 3.5mm in order to fit the output axle on a hexTronik DT750.
Also added air scoops to the large version to cool to motor, dont think its necessary tho, it doesnt get hot at all and the flaps are moving a lot of air out from the attachment and that is being pulled in from the two sides of the attachment, ie over the motor.
Also added bevels so the paper doesnt bend as sharply and and works for longer.
Table sander built from a motor, esc, servo tester and the power brick left over from an old LCD screen, took the motor pod off an old Flitetest Explorer i havnt flown in years, put a failed flat 3d print in the bottom of it, cut a hole for the clamp and it was done.