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Steamymoomilk

Stainless Steel Spikes (electrodes) (lemmy.ca)

submitted 4 months ago by [email protected] to c/machinist

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Hey folks, pardon the rookie question. We need to build a few hundred of these per year, so I thought I'd tool up, and wanted to figure out how to do this "cheaply".

Parameters. Stainless steel rods, with one end sharpened to a point, and the other end deburred. Typically 30cm long with no real tolerance issues, and no real parameters on the point other than "if you hit it with a hammer, you should be able to drive them into the earth." Typically made of 3/8" or 1/2" stainless.

My main problem is: stainless is fucking hard and destroys my bench grinder when grinding tips onto it. Is there a better grinder I could be using? Or perhaps I should be cutting these on a small lathe?

Also, when I buy stainless stock, I usually have the metal wholesaler cut them to length for us, but they charge quite a bit. The stainless destroys my bandsaw blades, so perhaps there is a better option? Is there a mitre saw blade that is rated for stainless? Or should I also be using a parting tool on a lathe here?

Thoughts are appreciated. Such a simple thing, but stainless so...

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[–] [email protected] 3 points 4 months ago

This is definitely worth testing. I worry that, in hard ground, it might bend the electrodes into a J shape if pounded in with a non-centred point. One they're bent too badly, we put them in the scrap bin as they become hard to pound and pull. But perhaps that worry is unfounded in practice and I can do some A/B testing on the points.