Came across an interference today between the stock washer fluid bottle and the Tilton 3/4" Clutch Master so had to remove the hanger for the washer bottle and shorten it a bit so there is enough room for the clutch line fitting.
Every air chisel I have ever seen or used has a double bevel on the chisel, both sides are ground toward the center. Now maybe it is physics or maybe Murrphy's law but when parting two pieces of metal that are spot welded it is always the metal that you want to keep that gets torn up by the chisel, every time. The flange for the washer bottle was tight in there and I couldn't get the spot weld drill in so used the air chisel and of course the good side tore, then I started thinking about wood chisels that you can 'steer' so you don't have to gouge too deep. One side is ground flat and the other is beveled to the flat side. I grabbed an old chewed up air chisel and re ground it just like a wood chisel and damed if it didn't work like a charm, I had complete control. Now maybe this is something that everyone else knows about but it was new to me.
You can see the top spot weld was cut with the double beveled chisel and tore a piece off of the side I wanted to keep, the lower spot weld was cut using the modified wood chisel shape.
I manged to remove all the rust from the sugar scoops but some of the metal was so thin you could push it in with your finger, got lucky though, my daily check through craigslist and kijiji paid off with a pair of perfect metal scoops with out a single dent, $75 for the pair