Utah Mammoth Coasters

A Utah Mammoth desgn on black slate coaster. I used these slate coasters from Amazon: https://www.amazon.com/dp/B0CGQQNZDZ?ref=cm_sw_r_apin_dp_F5TNHZT3SFB5STA74VPB&ref_=cm_sw_r_apin_dp_F5TNHZT3SFB5STA74VPB&social_share=cm_sw_r_apin_dp_F5TNHZT3SFB5STA74VPB&titleSource=avft-a&previewDoh=1&th=1 After some trial and error, I was able to get the multicolor engraving to work well on the slate. I used the 10W laser. Takes about 6 minutes per coaster to engrave. Laser settings:H2D - 10W laser:Laser ImageMax power: 100%Min power: 15%Speed: 120mm/sAir Assist: On#passes: 1Dual scanning: onScanning interval: 0.10 mmImage Mode: GreyscaleNegative image: off