Exhaust flange - Engineering Design Challenge for you Audifans tinkerers

[Mark R]

I can make them on our CNC machining centers.  But for a LOT more than
$15.00 each.  Heck, we charge $75.00 just to do the program, so we'd need
some quantity to reasonably amortize the set-up and programming costs.

Finding a pre-manufactured source is the way to go, but my company can
provide options.

Mark Rosenkrantz