I have a rangehood ceiling duct cover that is too long for my use so I trimed it with cirular saw. The finished edges look rough after cutting(picture attached). There are minor dent all around the edges and the it would cut my skin. I have already tried deburring tool and had little success. Is there another tool I can use to flatten the dent and smooth out the edge?
A hammer(ball preen) and a 2x4 to flatten,and a file to smooth. Place wood on one side and tap with the hammer from the other side, change side and repeat.
Probably clamp a piece of wood on both sides when filing. Could also use an angle grinder with the two pieces of wood to give a straight edge, probably still need a file to smooth/clean up the edges well.
If possible, should try to fold over the edge. This will give the smoothest, non cutting skin edge.