stt672
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I received a maryland bridge back for a re etch over the weekend. This had been in the mouth for 7 months. Wings had no cement or enamel attached to the wings at all. I usually give these a sandblast and acid etch of about 45 min with the ADS metal etching gel. I cleaned wings and gave them a etch of about 1 hour. The gel on the wings bubbled, turned green/black nothing unusual but after rinsing it looked as if it had not been etched at all. I used Talladium Star. What are you using to etch. I have used ADS for many years with good results, the kit I got expires 1-13. Totally stumped why I can't get an etch, other options other than ADS? They say if you do Maryland Bridges do about 100 then move a 1000 miles away, I'm thinking this might be a good idea. [ Yes I'm positive this is NP metal]
Thanks.
Scott
Thanks.
Scott