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Old 08-24-2013, 09:33 AM   #1
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Brass Cutting

I am planning on making some gears out of brass for my school project.

I have found a place that sells plate brass 260.

I plant on buying ~9mm thick slab of brass to make gears that are about 100mm and 50mm in diameter.

Would I be able to cut gears out of this brass with a CNC machine? Or should I use something else such as a Band Saw?

Would I also need to protect the brass from corrosion somehow?

This is the stuff I am getting:

http://www.onlinemetals.com/merchant...116&top_cat=79

http://www.onlinemetals.com/brassguide.cfm



Thanks
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Old 08-24-2013, 11:31 AM   #2
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Use a CNC if available.

Corrosion is a non-issue with brass gears.
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Old 08-24-2013, 05:21 PM   #3
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Sorry I meant Tarnishing not Corrosion.
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Old 08-24-2013, 07:36 PM   #4
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Tarnishing is also a non-issue unless eye-candy appeal is important. Even at that, under most conditions, it takes months for brass to tarnish to any degree.
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Old 08-24-2013, 09:21 PM   #5
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You might want to look up something along the lines of "gear hobbing". People who make a few gears have special tools to get the tooth profile right, and it's important for a lot of cases. 260 alloy brass is fairly tarnish resistant and easy to cut. A light oil keeps it pretty. Good stuff to learn on.
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