shop built knurling tool

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Vinegar's also great for cleaning up old stranded wire for new connections. Very handy on classic cars.
 
The finish is Birtchwood Casey Plum Brown barrel finish. Works great, clean part, heat in oven to 275 degrees and then wipe on with a Q tip or cotton patch. Wash with water, very fine steel wool, Then repeat if needed. Two rounds gives good results but three is best. I only did one round on the mounting post and you can see its not as dark. After browning i heat the part back up to 275 and then soak it in oil. If the part is polished you get a better looking finish but I chose to glass blast these parts so the tool would have a little less slippery feel when handling.

I would like to thank you guys for the nice words.

Mark T

I thought it might be a rust bluing, but I've never experimented with it. it looks great in this application.
 

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