3. It's best to use oil-based, high-gloss enamels for interior or exterior use on metal, glass, or wood. The flow characteristics assure the virtual absence of brush marks and provide a clean, sharp edge. It will dry to the touch in 2-5 hours and can be cleaned up with a good body solvent. The low temp reducer is ideal for lightly thinning the paint for the perfect striping consistency without making it dry too fast.