Ensure that all the recommended work time is used. Make sure that investment is not too thin. Orange peel surface finish. Surface finish of waxes may be poor due to a faulty rubber. Replace rubber if necessary.
Static electricity can cause deterioration of surface finish.
Consider using a wash wax. Wax wash must be completely dry before investing. Flashing or finning. Store material in dry atmosphere, use promptly and in rotation. Check all mixing equipment is clean.