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My wife and I are manufacturing some cast iron hand crank units for the kitchen/shop. I really just need my grain mill to do more so we're making our own unit with multiple functions. We've only got 11 months til I'm out of the service and I'm banking on this putting food on the table after I'm back in the land of the living (civilian life). Sure would appreciate any suggestions for potential uses, i.e. grain mill, meat grinder, band saw, drill press, etc.

The unit will be a universal one, with a slew of attachments, kind of like a Kitchenaid. Thanks in advance for any ideas.

Consider using a old exercise bike to power your device, legs are lot stronger than arm.
Something very similar may already exist, spending some time searching for already made unit or plan to make one may worth it too.

You cast your own iron?

We're getting there. I'm outsourcing the prototype to get to market faster.

that is cool.. good luck. I LOVE manual things built to last... LOVE them...