Any Dremel attachments good for first pass support bump removal on grey resin?


Like the title says, have some form2 grey resin prints that I’d like to do a cleanup pass on with a Dremel, looking for recommendations on attachments that would be good for removing support bumps and some captured resin clumps but won’t gun up or dig hard into the resin.


I think it’s very easy to go too far with a Dremel whichever attachment you’re using. Personally I use a combination of needle files, Wet & Dry paper and/or a Proxxon Pen Sander. I’ve also had some success using a sharp modelling knife or a scalpel to cut the bumps off reasonably flush.


I wouldn’t go on Dremel for this, its too aggressive.
I’m also using scalpel and wet & dry paper.

I’m using Dremel to cut through the entire part or to reshape it if i messed up with the design.

By the way, I found the grinding stone head for dremel as the best one to cut through Formlabs material. Dimon or regular head taking longer. The disadvantage is that it is very thick head and taking a lot of material. Also tons of dust.


I use the “Wondercutter S” ultrasonic razor knife. Cuts right through the supports
using very little pressure.


It depends on what you are trying to achieve. I general I would suggest a split shank plus fine wet and dry, maybe start at 320 or 400 grit, or if you could find one, a miniature flap wheel Again you would need one with a similar grit. You could use rubber wheels, but they would tend to ‘dig in’ unless you were very careful or skilled.

Personally I use a 6 inch second cut engineer’s file, but then I’ mostly cleaning up edges.


I use a split shaft with various sandpaper grades, but I agree that 320 or 400 are best for most situations. Aggressive enough to grind down the support nubs but not so much that it won’t easily mar the surface of the model. :+1:


I have a Dremel tool, but found it to be a bit hard to handle, especially when dealing with very fine details, so instead I bought a nail sander and diamond tipped sanding bits.

It’s so much easier to handle since it’s really pen sized, it’s technically one speed, 20,000 rpm, but that rating is with the 3.7V rechargeable battery it came with, so when I use a standard 1.5V battery, the speed drops dramatically, to around 7,500 rpm. Also one battery lasts a very long time.

I also use a Proxxon pen sander, but that’s mostly good on larger, near flat surfaces. The small pen and long fine bits let me get into small areas and crevices.