Thank you for all of the advice on settings and stuff. I made this Alice in Wonderland coaster set.
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That last one is one of my favorite sayings! Great job on them! 
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Thank you so much for sharing Jules! These settings worked perfectly 
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Oh good! Glad it worked! 
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Ok, I know I made a mistake on the text, but I tried 60 power and it doesn’t look as nice. So 30 power wins
60 left. 30 right
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Here are some interesting results and a question.
Why do people use the mineral oil?
The following was done without oil
I noticed that at 30 power, it’s not engraving, its exciting the surface and raising it up. It scratches off. Here I scratched off the top line of text.
At full power and 600 speed it actually cuts into the slate. The 2 circles were testing full power and 500 speed on the left, and full power 1000 speed on the right.
Enough that you can color it.
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It enhances the contrast between the slate and engraving.
Wipe it on and let it dry (overnight is fine), then engrave.
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But my mineral oil is getting absorbed. Its food grade with vitamin E (butcher block oil). Maybe not the right stuff?
I’m going to try shellac over first.
Mmmmmm, bug poop
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Bug guts! And alcohol!
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Forget mineral oil on slate! Use shellac! You can also use a belt sander on the slate to smooth it out a bit before the shellac. Look at that contrast
Speed 900
Power 60
Lines 270
Sanded/shellac
Unsanded/shellac
Engraved at settings above
One in progress
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Looks like I need to get my belt sander setup again.
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How’s it look like it handles abrasions? Does the shellac scratch & show white streaks?
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No. Shellac also melts into itself. So a dab of shellac would rejuvenate it
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That looks fantastic. I especially like the way the right side fades into the background.
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