
My final setup for milling the keyrings.

Copper milled ok. I should have probably used milk as a coolant, that's what the old-timers suggest.

Two copper keyrings held by the sheet.

I programmed the toolpath to leave 4, .01" thick tabs spaced evenly around. I snipped those to free the keyrings.

Sanding the keyring to give a brushed finish. That granite surface plate was a bargain at an auction and had a few dings so I don't feel bad using it as a flat lap.

The Nickel keyrings. Compounding my hatred of nickel was the fact that the plate I bought had pits, and the sheared edges of the piece I bought distorted the material.

The copper keyring.
I didn't really make any money on this except that I have a large piece of copper left over.
I think any element keyrings I make will be available in any metal the customer wants, as long as they want lovely free machining brass. Brass? Have I mentioned how much I missed you? I'm sorry I left you for a more exotic metal, baby, but I'm back and I love you all the more for the experience. Just give me another chance, you golden hued, wonderfully machinable alloy, you...
Here are two different .pdf files about machining nickel: one, two.
4 comments:
you are, quite possibly, the biggest dork I know
hard and gummy does seem to be a bit more than one should have to deal with. Cracked me up, though.
And I do love the title of the post.
Can I buy one of these? My 7th wedding anniversary is coming up. Please contact me at cstinger@verizon.net
I'm afraid I'm not making them anymore as they are too much work to be affordable.
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