Cart 0

Expert's Corner — combust

TIP: Solvents, Shelf Life and Spontaneous Combustion

combust fire solvent solventwater the finishing store woodfinishing woodworking

Examples of finishing solvents include mineral spirits (paint thinner), naphtha, denatured alcohol, lacquer thinner and acetone. None of these products have a shelf life, unless they evaporate because you’ve left the can open, and none can spontaneously combust like linseed oil can. Of course, all of these solvents, with the exception of those that contain water, will feed a fire that is already going. So you should still be careful where you toss rags that are wet with solvent. But no amount of these rags, piled into a trashcan, will start a fire by themselves.

Read more →


TIP: Oil and Spontaneous Combustion

apply byproduct combust danish dries drying efficient finish finishing floor generates glazes heat linseed materials oil-based oils paint prepare preperation rags residue solvents spontaneously strippers submerge the finishing store wad up woodworkers

Drying oils, especially linseed oil, are the only finishing materials that spontaneously combust. Solvents don’t spontaneously combust, paint strippers (including paint or finish residue) don’t spontaneously combust, and no type of varnish spontaneously combusts. It’s not totally clear whether 100% tung oil can spontaneously combust, so treat it like it does. As linseed oil dries, it generates heat as a byproduct. If you wad up linseed-oil rags or pile them on top of each other, the heat generated in the middle can’t dissipate. It builds up until it reaches the flash point of the cloth and it bursts into flame....

Read more →