If (I mean when) you get tired of turning that old crank, you can do what my dad did…

He mounted the old manual grinder to a 2 X something board, took the handle off and put a pulley on it. Then he screwed a motor to the board and added a v belt. He’s been using the same contraption clamped to a table for 30 years. The down side is that it’s 6 feet long and is always in the way the rest of the year.

I’m sure you could think on it longer and make the board shorter. Or just clamp the grinder and the motor to a picnic table outside and save the board for fixing the house up 8)