This was the same plate again, this time coated with two layers of Johnson’s floor polish, then engraved with an engraving needle into the white areas of the plate that had been stopped out first time, as well as lines crossing both etched and sopped areas.. The plate was etched for 15 minutes. The engraving came out ok, but now I don’t seem to be getting a good ink layer, maybe to do with inks or wetness of paper. But, anyway, established that the engraving using a needle gives lovely sharp lines, both in the masked and the etched parts of the plate.