Quote:
Originally Posted by _Ogre
looks more like he's refining the edge of a mold die.
you wouldn't use a milling machine for trimming a sheet metal panel
he's using a huge mill to boot
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He's making the male side (the "punch" side) of a die for stamping the sheetmetal panel. Somewhere there's a "female" counterpart going through the same process.
They are usually machined a few thousands of an inch shy and then skilled tradesman ("die makers") will provide the final fitment between the male side and the female side, spotting them in with a handheld die grinder.
K