Quote:
Originally Posted by Chris is me
We have a lot more success by clamping the frame square using large C-clamps before riveting. Still takes awhile to get it square, but it holds very nicely once its there allowing for easy mass riveting.
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This is what we do. To get it square, we use the bellypan as a reference to align all the 2x1. We have some 36" steel rulers graduated in 0.01" increments, so we use those as a good gauge of the length of the 2x1 when we cut it.
Generally for most/all of our gussets we just cut and drill the gussets on a drill press and bandsaw. Then we clamp it to the 2x1 and drill through.