For years I’ve had a Brown and Sharpe that I’ve primarily used for regular dividing head work. Rarely have I done any helical or spiral indexing. And in all reality, as I think on it, I primarily use my K&T and Cinci dividing heads, there’s only a couple jobs I do on the brown & sharp.
To the point of the story, this week I needed to cut a specific lead on a part, and setup the brown and sharpe. I couldn’t get anything to work out. Part of it was my ignorance in spiral milling, some of it was lacking some pieces parts for the setup.
After a day of making another bracket for a idler gear, messing with gear arrangements and beating my head against the wall trying to get something useful to come out, I finally realized my ignorance.
My dividing head is a 20:1 ratio.
I’ve never heard of a 20:1, let alone a Brown & Sharpe.
To the point of the story, this week I needed to cut a specific lead on a part, and setup the brown and sharpe. I couldn’t get anything to work out. Part of it was my ignorance in spiral milling, some of it was lacking some pieces parts for the setup.
After a day of making another bracket for a idler gear, messing with gear arrangements and beating my head against the wall trying to get something useful to come out, I finally realized my ignorance.
My dividing head is a 20:1 ratio.
I’ve never heard of a 20:1, let alone a Brown & Sharpe.