Sometimes it's easier to hold and draw the file accross the part than it is to move the part accross the file. Images 1 and 3 show me using the Vixen File to clean up the edges of the Aluminum Angle parts. Image 2 shows how I used two pieces of scrap 1x4 to hold the Aluminum Angle.
Finishing Cut Edges with My Vixen File
How the Piece of Aluminum Angle was Held for Filing
