Premium Engravers Copper Plates - These polished Copper Plates are available in both 18 and 16 Gauge thickness and are an economical alternative to polished photo-engravers copper. They may have minor flaws that can be polished if desired but most artist choose to keep the look and feel of the original material. The back-side of the copper plates are not acid-resistant and require a treatment of stop-out varnish (not included) for etching.
Premium Engravers Zinc Plates - Zinc plates are 16 Gauge (0.064) in thickness. These plates have an acid-resistant back.
Note: Before use remove the protective plastic sheeting on face of plates.