A lot of resins are used in varnishes. Printer's varnish uses copal resin, polyurethane varnish uses polyurethane, amber varnish contains amber.

A lot of resins are used in varnishes. Printer's varnish uses copal resin, polyurethane varnish uses polyurethane, amber varnish contains amber.

Polyester resin, fiberglass, polyurethane, horse hair and cotton

The glass fibre would be OK but the polyurethane resin is not heat resistant.

They are different types of plastics and acrylic is typically used to make clear sheets like Perspex, Plexiglas, Lucite and aircraft canopies. Polyurethane is more flexible and typically used in layup resins with Fibreglass to make boat hulls and car bodies.