Author Topic: Etching Granite  (Read 731 times)

ggallant571

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Etching Granite
« on: February 06, 2018, 08:39:48 PM »
I was at a kitchen counter shop this afternoon and got a couple pieces of scrap kitchen countertop granite. The black (with white speckles) is etchable with a 2.5W laser. Not great and the shine from the stone makes the camera picture useless. Etched their business name on both sides at both 240 and 60 mm/min. The rougher surface (forget the trade name) is less visible than the polished one.

Also got a light (almost white) chunk that I expect will remain unscratched.

Open to suggestions regarding taking pictures of faint images on a shiny background.

BTW - They have a few tons of scrap granite along with a large quantity of scrap birch plywood good for small images or testing.
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mrehmus

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Re: Etching Granite
« Reply #1 on: February 07, 2018, 10:12:18 AM »
To take pictures of reflective surfaces, use a light tent that will diffuse the light. Plastic water pipe will make a frame and a white bed sheet the covering. Just leave enough opening for the camera's lens.
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kibodwin

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Re: Etching Granite
« Reply #2 on: February 08, 2018, 04:58:04 AM »
or paint the engraved part with a contrasting colour and wipe the excess off...?
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