As you can see it's a used Holdridge 8-D Radii Cutter. It should work perfectly with my 11" South Bend. I got what I think was a great deal on it and couldn't pass it up. :biggrin:
Thanks guys. Nothing like getting "new" toys to play with. :biggrin: While I'm at it, here is another little acquisition, this one from e-bay:
I was considering building one but by the time I got the raw materials and some extra tooling that I'd need to finish it properly, it was cheaper just to pick up a used one off the bay.
As you can see it's a used Holdridge 8-D Radii Cutter. It should work perfectly with my 11" South Bend. I got what I think was a great deal on it and couldn't pass it up. :biggrin:
I'm guessing from the looks of it that it's a very high end ball turning fixture (amongst other radii)? Nice score! It doesn't even look like it's ever been used! Definitely worth a "you suck!"
The zero-center is used like a coaxial indicator on a mill. You mount the stepped post in your quill using a collet or end mill holder. A dial indicator is attached to the left side (in the pic) of the block. You can then use it to center a circle or other misc. pieces to the quill. Here's a similar one from Enco's website:
The radii cutter is just that. The big crescent shaped thing is attached to the compound/cross slide of a lathe and is used to cut a radius/circle/globe. Here's a pic from Holdridge's web site:
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