Quite happy with how this turned out, intentionally set the pattern over the rough edges of the slate so it wasnt just a suddent stop to the pattern or a box around it.
Done on a3 eleksmaker 2.5w laser diode. 1100 mm/s 100% - Done the mineral oil trick and pops out nice, might put coat on again to get the wet look tonight
Jasper suggested it but applying small amount of mineral oil to slate before lasering, 1st try it was bad and pattern buffed off :o so for this one pictured above I put oil on for bit buffed it off and left it a while before wiping down again and lasering.
Since this pic I’ve oiled and buffed again and the slate has nice wet look and makes the pattern pop more and look great, just 3 more to make for a set to sell then.
Is this thread dead dead? Curious about CO2 Air-assist as well (with Air Compressor) And Mineral oil. I rubbed mineral oil on coaster before engraving. But idk how much Im supposed to “buff” (wipe?) off before going to laser, or how long to wait. I added another coat to the coaster after, and then wiped about 10mins later. But Final product isn’t vibrant at all.