I’ve already tried multiple grain alcohol/salt soaks. Not for multiple days though, I’ve never heard of that one. But I did it overnight one run through. I also tried alcohol with cotton balls first, which worked in a similar fashion to the salt. The last run through came back pretty clean. I could still taste it in the middle of the smoke. I did do the coffee grounds procedure, had never heard of that one either before. Some guys were talking about baking pipes a 200F, I didn’t try that. After the coffee, I could not taste it, but it burned my mouth/lips in the bottom third of the bowl. I think the previous owner was a serious Lakeland fiend. People probably should indicate strong lingering ghosts whenever they let a pre owned pipe go.
I have been doing some reading on physics forum, clean brite, read material data safety sheets, and even some drug related forums lol. It seems like pure acetone is probably what they are talking about using for briar pipe cleaning. Most likely, because it evaporates very, very completely. I also saw that it is produced naturally in the human body to burn fat. Cheaper acetone has other ingredients like water and such in it. I have used it before for work, and it’s very effective at dissolving oil, paint and grease. (like the oils from Lakeland essence and tobacco generaLoy) Aside from the vapor that causes respiratory issues and direct skin contact related absorption, material data safety sheets indicate it is nominally toxic. I also read people use it to purify powdered narcotics, as well as make homemade hashish. This does seems plausible, I wish I had a cheap pipe I could try this on for science. It seems like the only real danger to the pipe might be the finish. I am not sure it would be dangerous to smoke after it was aired out completely. Sorry for the essay.