... vacuum forming machine for acrylic *Automatic Vacuum Machine *Vacuum Acrylic,ps,plastic *make light box ,LED letter vacuum forming machine for acrylic 1.Do not have upper and ... reused, no defects, fast, time saving.C. No external mold constraints, drawing a small amount of thinning, choose ... D. Die on simple, accurate, and do super small print, no waste;E. Without mechanical indentation process, so that ...