I've improved the quality of my forming but still need to do a little planishing to smooth out small bumps. It is only an exhaust manifold but it is visible and should look as nice as is reasonable to do. I needed a solid anvil to tap on. After trying a lot of loose dollies I realized that if I just clamped my ball tool to the deck railing I'd have what I needed. It works great.
I now have three shells halves ready to trim for welding.
I need to make a pattern for trimming and a form block for bending up the edge of the top shell 90 degrees before welding. I also need to work out the welding process to create little spot welds.
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