Lasering an SM58, please?

Jay

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Mar 31, 2015, 4:26:35 PM3/31/15

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Hello everyone.

In doing my due diligence of being sure of the materials I put under the laser I wanted to check if anyone knew for sure what material the main body of an SM58 is.

From what I've found it's an enamel-painted die-cast metal (http://www.amazon.com/Shure-SM58-LC-Cardioid-Microphone-without/dp/B000CZ0R42).

If this is indeed the case I take it that would work in taking the enamel off, and leaving an etched mark?

Now for the next part - assuming for the moment it is die-cast metal could one of the maintainers tell me if it's safe to engrave this or not pretty please? I see all metal (except anodised aluminium which I engrave a lot) is on the banned list, I'm hoping it'll be ok to engrave this though?

Thanks, James.

Russ Garrett

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Mar 31, 2015, 4:35:24 PM3/31/15

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I'm almost certain it's anodised aluminium, but you will have issues etching a non-flat object. You need a rotational axis for it to work.

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James Stokell

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Mar 31, 2015, 4:48:24 PM3/31/15

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My thinking was if it was a small enough area it would only be a negligible diference in length away from the laser, but I don't know enough to say that would work, I am prepared to give it a go and if it fails not do it again (if it is indeed annodised alluminium as someone else said they thought it was that too).

Thanks, James.

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Russ Garrett

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Mar 31, 2015, 4:51:31 PM3/31/15

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You'll need less than 2mm variance in height to get good focus, which doesn't give you much space.

Jay

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Apr 3, 2015, 12:21:28 PM4/3/15

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That's good to know, thank you!

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