How to Fabricate Amp Cage?

Effectively you lay it out the same way as making a lid for a box with cardboard.
You don't need any fancy machinery if it's aluminum and you have a table with a sharp edge, a mallet (or a hammer wrapped in a towel), a ruler, etc.
You can bolt the corners instead of soldering/welding. You can even bond them with glue.

Will it look perfect if made this way? No. But it's DIY. not CIO (contract it out), right? 🙂

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EDIT: I just found an 18 inch wide metal brake for 20$ at Princess Auto.
https://www.princessauto.com/en/18-in-bench-top-metal-bending-brake/product/PA0008039455
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