Add a thin rubber sheet (or even masking tape) between the jaw and workpiece. The 210D has plenty of force, but smooth surfaces sometimes get cheeky.
Hobbyists and professionals who need clear, no-nonsense guidance for the Jig-zp8-210d. Jig-zp8-210d Manual
Always remove the plug from the power source before making adjustments, servicing, or changing accessories. Add a thin rubber sheet (or even masking