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Metal Etching Lines

#1

How do you avoid getting lines from edges into design when etching metals… see example at this link…
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0ahUKEwiOqLiEjM3VAhUUHmMKHXLsCV8QjRwIBw&url=http%3A%2F%2Fwww.rings-things.com%2FLearn%2FEtching%2F&psig=AFQjCNEkWVCTeUTqimSeLzWGclzsUoOUaQ&ust=1502469140790292

Not a judgement on this image, as sometimes I would want them as part of the image, but other times would like to not have them… I read it somewhere on what causes this, but can’t for the life of me find that info again…

#2

Those are caused by bubbles. You prevent them by constant agitation–
attaching an aquarium pump to the side of the contained for the vibration,
using a pump to blow bubbles into the mordant to move it around, using a
magnetic stirrer, standing there and brushing off the bubbles with a
feather, etc.

Noël

#3

It’s all here, tried and tested.

Karen Christians
Western Avenue Studios, 506
122 Western Avenue
Lowell, MA 01851
Karen@karenchristians.com
www.karenchristians.com
781-367-4992

#4

Ah, thank you! Takes constant attention to the process!

#5

Thank you Karen… I’ll go check this out…