Our HH-66 Thinner is designed primarily for use with HH-66 Vinyl Cement.This solvent-based thinner reactivates dried HH-66 Vinyl Cement or removes unwanted HH-66 from surfaces. You also can use HH-66 Thinner to clean brushes rollers spray guns and other types of applicators. Since HH-66 Thinner is flammable it should be used in a well-ventilated area. Handle empty containers with care as any residual solvent is flammable.When To Use HH-66 ThinnerIf Your Coat of HH-66 Vinyl Cement is No Longer Tacky: Use a brush or roller to apply a light layer of the appropriate HH-66 Thinner directly to the application. Bond the pieces together as per the adhesive directions