Stone flaming

[1][2] The sudden application of a torch to the surface of stone causes the surface layer to expand and flake off, exposing rough stone.

The saw leaves flat surfaces with circular marks.

Flaming is done by wetting, and then running an oxygen-acetylene or oxygen-propane torch over the surface.

As shown in both pictures, the torch is usually held at a 45-degree angle to the stone, so that released glowing sand grains are blown away in a harmless direction.

Alternative techniques for creating a rough surface on sawed stone include: Flame treatment – application of a gas flame to the surface of a material to improve adhesion or other surface characteristicsPages displaying wikidata descriptions as a fallback