Hey everyone, So I decided that I just needed to build a UDS. I figured the first step was to get my drum, so I got one for $13 and the vendor said that it originally had pine resin within it, however, after consulting with a couple of friends, we have come to the conclusion that it may not be pine resin. At the bottom of the barrel, we saw a tag that said Polylite(tag was in rough shape, so that is our best guess). A friend of mine said it reminded him strongly of windshield repair resin and after doing a comparison, I have to agree they smell virtually identical. We have done 2 roaring burnout/cleans to make sure there is nothing left in there, but we were not 100% sure whether it is safe to cook on even after burning it out. Does pine resin/windshield repair resin actually absorb into metal or would 2 really hot fires be the end of anything that was once inside that barrel? Is there a list of anything that could NEVER work as a UDS barrel because of absorption into metal? Just a little concerned about safety and wanted to ask around. Thank you all in advance and happy smoking!