Slate (coaster)

Confirmed by multiple S1 40W reviewers: 90% power / 300mm/s / 1 pass / 100 lines/cm produces excellent results on slate coasters in approximately 6.5 minutes. This is a well-tested, widely-cited setting across the community. Higher speed (400mm/s) at same power produces lighter contrast. Use XCS 'Rock Coaster' preset as a starting reference. Air assist not required for slate. Source: 3DWithUs xTool S1 review (3dwithus.com/xtool-s1-review); xTool slate coaster engraving guide (xtool.com/blogs/how-to/engrave-a-slate-coaster); rufflesandrainboots.com laser engrave slate guide; Facebook xTool S1 40W slate coasters community post.

Settings confirmed by an M1 10W user in the xTool community support thread for photo engraving on slate coasters (support.xtool.com/community-support/detail/8197). Power 30%, Speed 180mm/s, 1 pass. Low power + high speed produces best contrast on slate — going darker tends to over-ablate and lose detail. For vector/line art you can push to 50% power at 150mm/s. Source: xTool community support (M1 10w engraving photo on slate / rock coaster); ShawnMosch M1 settings; xTool official slate coaster guide.

What are the best laser settings for Slate (coaster)?

A top-rated community setting for Slate (coaster) on the xTool S1 is speed 300 mm/s, power 90%. There are 2 community-tested settings for Slate (coaster) across 2 machines on this page.

Can a diode laser work with Slate (coaster)?

Yes — there are 2 community-tested diode laser settings for Slate (coaster) on this page.