What should I make out of this?

Shootymacshootface

I make little metal out of big metal.
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I believe this was for a wood shaper. The cutters are very hard. A file just skates over them. The center is 5/8" not sure of the threads. It has some weight to it and I'm sure it is well balanced.

I am thinking a fly cutter?
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looks like a molding (fingernail) cutter for a wood shaper.
 
It might cut aluminum and other softer metals, but it is really meant for wood, and using it on metal might abuse it.
 
That tool has light cutters with slender and long cutting edges. That is fine for softer and easier cutting materials, and can leave a nice finish. If used on harder and tougher work, they can also flex quite a lot, making a worse finish and/or damaging or breaking the cutters. For harder and tougher materials, the cutters are usually made shorter and fatter, better supported for the tougher jobs they have to do.
 
Thanks Bob, I was thinking about using a hss lathe tool or a broken drill bit vertically. I'm not sure if it would be worth the effort to make a shaft for the cutter.
 
It is a profile cutter for wood. It is designed to be used in a wood shaper. I would not attempt to cut any metal with it.
 
It is a wood cutting molding head suitable for a wood shaper, not metal cutting.
 
You could regrind the blades on it to a more appropriate shape for metal cutting, but you would need to take care to ensure they were all cutting at the same distance from center. Bore the center and use it on a stub milling arbor. Don't know if it's worth that much effort, though, considering what you can get good used milling cutters for on Ebay.
 
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