Techniques

Sugar Lift

Sugar Lift

Here designs in a syrupy solution of sugar or Camp Coffee are painted onto the metal surface prior to it being coated in a liquid etching ground or 'stop out' varnish.
When later the plate is placed in hot water the sugar dissolves and lifts off leaving the image. The plate can then be etched.
The exposed metal areas are then etched by dipping the plate in a bath of etchant (e.g. nitric acid or ferric chloride).
The etchant "bites" into the exposed metal, leaving behind lines in the plate. The remaining ground is then cleaned off the plate, and the printing process is then just the same as for engraving.