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[larry_g]

Assuming this is for holding round dies, put the threaded hole in another position. The 180* out put a spot on it and another drilled and tapped hole....

[larry_g]

https://workmaster.net/vibra-tak-tachometers/

I have one of the above tools that is probably 60 years old. Works on the same principle....

[larry_g]

Be a bit careful doing this as dowel pins are over nominal size. A 1/4" dowel pin is .2502 =/- .0001. Then there are the oversize pins. and then...

[larry_g]

I'm guessing that there are 5000 drill bit sets sold for each set of drill blanks. Those people who are buying drill blanks also will have a much higher...

[larry_g]

Above you can see the feed stop rod on my Index mill. You can see the rod goes through a block cast into the saddle. This is the stop block....