This is a remake of this handy little attachment: https://www.thingiverse.com/thing:2468739
I just closed off the outer end and made a cap for the inside end to keep the sandpaper strips from flying out. I use this for very fine sandpaper to buff PLA.
This works MUCH better if you cut all the strips the the exact same size.
There is also 2 types of "jig" for cutting and folding the strips to the exact length.
One small simple one and a larger one that will do all the measuring for you.
I apply tape to the back of the very fine sheets before I cut them, to make them more ridged when spinning at high speeds.
I added Jig3 (reworked it as it was too dependent on hardware).
I based this on sheets of 3M that are about 95mm wide.
- Push the sandpaper in until it hits the stop, push down on the press to hold it and run your exacto knife in the grove to cut a 17mm wide strip.
- Next push the small strip into the narrow slot until flush, push down on the press and cut the strip into even thirds (2 cuts needed).
- Lastly use the angled groove to bend the small strips the correct amount.
I just used a spring I had on hand ( 7x50mm and cut off 2 14mm pieces ). You do not want it to be too strong or it may break the caps or stud threading. You could even just put in a peice of sponge if you don't have a spring.
Some light sanding maybe needed on the studs and the back side of the press to insure it moves smoothly.
I added "Jig2"
You can use this to measure and mark the right width and length of the pieces of sandpaper, and to make the fold. I based this on sheets of 3M that are about 300mm long.
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I printed the base at 15% infill and 3 shells min.
The rest of the parts are at 100%.
Go without supports if you can, but using them is not that big a deal either.