Is it doable to engrave this image to slate stone?
Which image?
Engraving on slate is straightforward, just be aware that a lot of stuff sold as slate is stone chip in acrylic binder and is just going to bubble and burn
I picked this up from Craigslist, some leftover from diy patio. I will check with my brother before using. Is there a general setting to start off with? Thanks, Lucie
Not really… depends on the type of stone.
When I laser rocks I tend to start low power (12%), medium speed (250mm/sec:) and go up from there.
I have a 100w laser
Could you please go to your profile and update your machine type and wattage? It’s hard to make settings suggestions without knowing what machine and I can rarely remember who’s got what without looking…
I am using laser at Rochester Makerspace. I have no idea, but will check it out and get back to you.
I burned some slate from Hobby Lobby with my NEJE 30(7)Watt diode laser. Here is a swatch I did.
Notes are speed/power (speed=mm/min)
I forget what settings I used on the fill burn.
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I have also tried my hand at slate and find it relatively easy to go to.
For this example I have used cross-hatch with relatively large line spacing, moderate speed (it is always moderate with me 
) and decent power. I started with too low power but just gave it an extra round with a little more.
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40W laser with speed/power 100/10%. If you increase the power (higher than 12,5%), the engraving tends to yellow. If you decrease the power it remains white/gray.
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Thanks everyone, we were at Makerspace at 9:00 am today so I didn’t get a chance to check my emails. We winged it, but didn’t do all that bad. Will be making a few changes after reading your posst and can’t wait to give it another try.
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Your learning curve is reasonably steep up the hill, that’s fine. I love the green eyes of your lizard, now you just have to get the edges a little brighter. 
