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Old 21st September 2020, 06:06 PM   #14
Interested Party
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Join Date: Dec 2019
Location: Eastern Sierra
Posts: 125
Default Answer to my own question

Originally Posted by Interested Party
Does anyone have any further experience/feedback/hearsay regarding Iron(III)sulfate? I.e. method of use, duration of contact with the surface to be etched, is it as messy and rust prone during cleaning as ferric chloride?
Rolland M had the answer to how to use sodium persulfate in a 2015 thread. "For pattern welded steel I preferably use sodium persulfate (fine etch crystal), 20 Gramm in 100 mL distilled water (~70C ) with a pad, brush or Syringe." I hope this may help someone combing the archives one day for restoration information. Attached below is the entire thread.
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