How To Clean Polyurethane Brush With Mineral Spirits

Pour about a quarter inch of mineral spirits into a glass or plastic container.

How to clean polyurethane brush with mineral spirits. Aim for just enough that you can dip your paintbrush into it. How to quickly and efficiently clean your varnish brushes from master shipwright louis sauzedde. If paint is still wet with brush placing brush in a small upright container submersing bristles for several minutes is just fine. Add a small amount of the mineral spirits to a wide bowl.

Pour enough mineral spirits to coat your brush into a bowl. By cleaning before i usually squeeze the majority of the paint or other poly solids out of the brush then 1 rince to remove the majority of the solids th3n put the brush in bristles deep thinner and seal it. By the second or third washing the soap will foam up readily indicating that all the solvent and whatever varnish residue still mixed in the solvent are gone. Fill the plastic bowl halfway with paint thinner.

Shake the excess thinner out and the brush is ready for another coat. With poly that i may be continuing work within a week i may not clear as much but keep the bristles in thinner. Clean larger parts that aren t easily. You will just need enough to immerse your varnish brush into the mineral spirits.

Both dish soap and shampoo work well for this step. Step 2 dip the brush tip into the bowl of paint thinner. Do not fill the mineral spirits to the top. Cleaning oil based finishes from a brush requires solvents and a little more time than water based finishes.

For small parts submerge the metal piece in a container of mineral spirits to loosen grease and then use a scrub brush to remove any remaining grime. Depending upon what you used your brush painting paint thinners or mineral spirits will clean your brushes without harming handles shanks or glues holding bristles together.