Peak Warming Man said:

sarahs mum said:

I haven’t done any etching since about March. The acid bath has evaporated quite a bit but there was enough in it to etch the little plates I have. I wondered if the etch had lost its strength. It probably has but the evaporation has meant that that it was still pretty much the same potency. Or perhaps it was that it was pretty much the same with added warmth from the sun.

Is there any way you can control etching depth to accentuate certain features?

the steel plate is covered with bitumen. i have scratched into that. i can leave it in the etch longer to get deeper/stronger marks. I can take it out of the etch and cover bits with more bitumen ( or wax crayon etc) and put it back in the etch and this varies the tone of that line in the final print.