Slate coasters from Michael's was a breeze

Hey Community, Just did my first set of slate coasters from Michael’s craft store. I read a lot about the coating you should put on them for a better outcome and I have to tell you I used a light , just a quick almost dusting, spray of Rust-oleum Lacquer and the results were perfect. It dry’s almost instantly and after engraving the slate I washed it off with water and dish soap, beautiful results! Also here are the settings I used after I set the height manually with digital calipers, these were also engraved with the crumb tray installed.
speed 900
laser 50
lpi 270
1 pass
Hope this helps those out there doing engravings on slate!


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Moved to beyond the manual since it violates the rules for the Made on glowforge section :wink:

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also forgot to mention , hardly any smoke or spark during the entire engraving!

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thank you!

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Nice results, good simple clean subject art. Well executed all around.

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Looks great! Where’d you find the Lacquer trick?

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It’s been mentioned here before. If you start looking at “slate” posts it’s sure to turn up. :slight_smile:

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They turned out great

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Those look great!!

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Nice result! I may have to give this a go :slight_smile:
Love the heart design.

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Great turn out! Slate is a lot of fun.

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I’m just curious…I did my first engrave on a slate coaster. Interesting, and turned out great! But, I’m wondering, what exactly is the laser doing to the slate? Wood obviously burns, as well as acrylic, and with anodized aluminum the laser is burning off the layer of anodized material. But, what’s happening to the slate? It can’t burn the stone or melt it. So, does anyone understand what’s actually going on? I saw no smoke, sparks, dust, or anything. Weird!

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Pretty much the same principal as anodized aluminum.

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It’s the practical magic saying icons -
Screenshot 2022-07-08 13.27.26

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Or brilliance or cermark on metal. That’s what the lacquer did. Otherwise it ablates the slate but will fade over time I’m told.

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Still bright as ever since I engraved them

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I didn’t know! Love this :slight_smile:

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Love this project. Simple designs but the coasters have such a visual impact!

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thank you

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