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That's a cast iron tool, fellah! Welcome to the real optician's "lap"!
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A good exercise- machine it convex to a predetermined ROC with your handy flycutter, and recut the concentric grooves to do mirrors. It'll hold the ROC far better than any glass or tile tool. Or you could also machine and grind it in flat for doing such pieces. Nothing like a good cast iron tool.
Mark

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All righty then....

So I have one cast iron tool that is concaved for making CX curves for lenses...and I have a cast iron tool used to grind flat surfaces? Or is pitch supose to be applied to this tool?

And since both have the same tapered pin on thier backs...how do I use them with this?

Expert!

Rob

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www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.

http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.

www.vimeo.com/6014031

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