You need some serious grunt in a hand/gravity driven press to form a shape that deep in >1.0mm steel if the diameter exceeds 20mm. For homebrew construction a flypress with suitable punch and die could knock out 30mm in copper sheet >1mm.
The flypress can be had for cheap if you can move it without busting a gut but the tricky thing is the price of having the punch and die made. Not cheap unless you can find a Chinese tool and die shop using decent tool steel. You can make your own tooling but again you encounter more expense or already having an extensive workshop with a lathe and heat treatment facililty.
I was searching for smaller but M6 may be good
Suppose that a new enclosure for an amplifier was needed. Then 1 mm steel would be sturdy enough, and 6 mm screws would hold the bits together. If the screws had slim heads, then the diameter of the flat recess should be 12 mm. The depth of the recess needs not be more than 2 mm.
Suppose that a new enclosure for an amplifier was needed. Then 1 mm steel would be sturdy enough, and 6 mm screws would hold the bits together. If the screws had slim heads, then the diameter of the flat recess should be 12 mm. The depth of the recess needs not be more than 2 mm.
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