I like the piece chuck, nice job. You shouldn't need to go too thick for your sheet metal, I probably wouldn't go thicker than 16ga-14ga. They're both strong and easy to work with, and you can do a lot with basic tools. We all burn holes and have learning curves with new material. You could probably stay with the 20ga and after a couple of frustrating weeks would get a system down, but personally i like 14ga.
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I like the piece chuck, nice
I like the piece chuck, nice job. You shouldn't need to go too thick for your sheet metal, I probably wouldn't go thicker than 16ga-14ga. They're both strong and easy to work with, and you can do a lot with basic tools. We all burn holes and have learning curves with new material. You could probably stay with the 20ga and after a couple of frustrating weeks would get a system down, but personally i like 14ga.
Keep up the good work.
Jake