In 1978, I used my first wood-cutting knife in Hangzhou, China. In 2002, my last etchingplate was accidentally discarded after two trial impressions in Portland, Oregon.
Etching machine in normal operation, the first I put a feeding trial with engraved stainless steel plate, it will slow conveyor belt into the machine.
蚀刻机运转正常后,先在入料口放一块试刻用的不锈钢板,传送带会把它缓慢的送入机器内部。
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Meanwhile, the difference in thermal conductivity of underlining materials (plastic sheet, steel sheet and aluminium plate) has little effect on the etching rate.