Deburring Firewall - What Tool Works Best?

[skelrad]

What tool did you find worked best for deburring rivet holes in the firewall? For edges and large holes, sandpaper works fine, but I haven't found the right approach for rivet holes yet. I tried a cone shaped stone (for a die grinder) chucked into a slow drill, but the stainless just ate it up. A drill bit was moderately successful, although for freshly drilled holes with large burrs, it struggled to cleanly shave the burr off (same for my normal deburring tool I use on aluminum).

Did you find something that worked well?

 

[Mel]

What tool did you find worked best for deburring rivet holes in the firewall? For edges and large holes, sandpaper works fine, but I haven't found the right approach for rivet holes yet. I tried a cone shaped stone (for a die grinder) chucked into a slow drill, but the stainless just ate it up. A drill bit was moderately successful, although for freshly drilled holes with large burrs, it struggled to cleanly shave the burr off (same for my normal deburring tool I use on aluminum).
Did you find something that worked well?

I use the edge of a cutoff wheel in the Dremel. Just takes a light touch.

 

[skelrad]

Thanks Mel! Went right out to try that and it worked great! I used a cutoff wheel in my right angle die grinder with the air pressure turned down super low.

 

[wirejock]

Dremel cut off wheel

I use the edge of a cutoff wheel in the Dremel. Just takes a light touch.

Same here. Only thing I found that worked.