Can you varnish ABS plastic

Yes, you can varnish ABS plastic, but it's important to use a compatible varnish, such as one specifically designed for plastics or a water-based polyurethane. Before applying varnish, ensure the surface is clean and lightly sanded to improve adhesion. Additionally, test the varnish on a small area first to check for any adverse reactions. Keep in mind that certain solvents in varnishes may damage or dissolve ABS, so always check compatibility.