What Is Urethane Thinner

A urethane reducer is essentially a paint thinner designed specifically to work with the urethane-based paints typically used on automobiles, according to Dennis Parks and David Jacobs, authors of “How to Paint Your Car.”

Can you thin urethane with acetone?

Thinning polyurethane before applying is important for a number of reasons. … However, steer clear of using acetone for thinning polyurethane for spraying. Polyurethane will actually repel the acetone due to which it will bead up on the surface much like water.

Is urethane reducer the same as enamel reducer?

Enamel reducers are designed to transfer a thick (high build) coating to a surface & let that coating flow on it’s own. Urethane basecoats are about 1/2 as thick as Enamels (hence sanding w/ 600 vs. 320).