how about a Oklahoma,AR,MO,KS,TX,+IA GTG thread?

[Sawdust Man]

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What is this for?

 

[They call me Mr. Kibbs]

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What is this for?

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To me it looks like a star bit drill, or rock drill, you use with sledge, I have a much used one from my grandfather's time on the railroad.
Here's more info if interested

How to Hand Drill Holes in Stone and Concrete - Core77

The star drill passed through some odd and humorous intermediate stages on its way to becoming the electric rotary hammer.

www.core77.com