Machining copper

101 or 110? I have a prototype job coming up where I'll be machining about 100 weird small gaskets out of copper. I don't look forward to milling copper (I'm more of a plastic guy). I know, two flute, high RPM, coated carbide, light DOC. My question is this, given a choice between 101 and 110, does anybody know which is better to machine?

Thanks

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I know nothing about machining copper.

If you are just making flat gaskets, I would look into having them cut with a water jet.

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Dave Lyon wrote:

snip

Not just flat. Protrusion features on both sides (two setups). Will require a 1/32" endmill for a .039" slot. Max spindle speed only 5000 RPM.

While we're at it, should I dump the water sol coolant and switch to oil for one job? Perhaps a can of oil and a brush?

But the question right now is do I order 101 or 110?

145 etc is not an option.

Thanks

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FWIW, McMaster rates both alloys "poor" for machinability. Why are you constrained to those choices?

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Smitty Two wrote:

snip

Yeah I know, something like 20%, but I'll bet one is better than the other.

Why am I constrained to 101 or 110? It is not to me to reason why....

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If it weren't for bosses, customers, and engineers, work would sure be more palatable.

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110 much easier than 101 - 101 is oxygen free, electronic grade - very gummy, loves to gall & weld to tools. Try some 145 when you get a chance = mechanical properties similar to 110, MUCH easier to machine.

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Polymer Man wrote:

110, water based coolant works well too

ca

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clay wrote:

snip> >

Thanks Clay, that is what I needed to know.

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