downeastdigger
Posts: 3160
Joined: 8/22/2005 From: Crawling through the mud and briars of Eliot Maine Status: offline
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HI Bottleman It is my belief that using acids ( I use miuriatic acid ) works very well on bottles from the turn of the century and newer best. It is great on rust especially. I use it on my cheaper bottles that would take a long time to wash, and they wound up sitting in crates otherwise. Older bottles, ( 120 yrs + ), that are "sick" have been buried longer, often times in ash and mineral soil, and it has damaged the surface of the glass on a microscopic level. If you soak these in acid, you can soak and soak, but it won't get rid of sickness, and may eventually cause "pitting' on the glass which is even worse. Tumbling these bottles, wears off the surface off the glass and creates a new surface, then it is polished in the second phase of tumbling. So it isn't actually "cleaning" the bottle, but rather giving it a new surface. I may be wrong, but thats what I believe to be true. I dont follow directions well, so I usually fail using both methods, so maybe dont listen to me! :) Bram
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