Paolo Sturaro Posted September 11, 2013 Report Share Posted September 11, 2013 …It won't get hard… I'm talking about Tung-Oil, of course. HI folks, i'm finishing a beechwood sushi tray with tung-oil (chestnut brand) but i'm not sure it's working fine. From what i know, you'r supposed to leave the olied rag on the concrete floor over night and then trow it away the next day when it's dry and "crispy"… Why my rag remains wet even after 24h? The wood surface also remains a bit oily (not wet but it leaves your fingers shiny)… Am i having a probelem or can i go on applying coats? Quote Link to comment Share on other sites More sharing options...
Trip Posted September 11, 2013 Report Share Posted September 11, 2013 Tung oils can take quite a while to dry. I'm not familiar with 'chestnut brand', but I managed to find their website -- unfortunately, it doesn't say much... If the oil doesn't have any added dryers, polymerized in some way, partially cooked, etc -- then it could take quite a while to dry (days/weeks/months/never). I'd wait for some who is familiar with the brand to chime-in and/or contact the mfg directly. Quote Link to comment Share on other sites More sharing options...
dwacker Posted September 11, 2013 Report Share Posted September 11, 2013 Holding back on the viagra wise cracks , you can thin with mineral spirits and it will dry faster. 1 Quote Link to comment Share on other sites More sharing options...
Paolo Sturaro Posted September 11, 2013 Author Report Share Posted September 11, 2013 Is it food safe if thinned? Quote Link to comment Share on other sites More sharing options...
Paolo Sturaro Posted September 11, 2013 Author Report Share Posted September 11, 2013 the can says dries in 24h and fully cures in one or two weeks Quote Link to comment Share on other sites More sharing options...
dwacker Posted September 11, 2013 Report Share Posted September 11, 2013 Is it food safe if thinned? I would guess the answer is yes. My wife wipes down her cutting board with mineral spirits before she re oils it and we are not dead yet. 1 Quote Link to comment Share on other sites More sharing options...
AceHoleInOne Posted September 12, 2013 Report Share Posted September 12, 2013 Beech in the states is a very hard wood. The oil is probably not soaking in very well????? So it's sitting on the surface. Yes your rag is telling the story. It's going to take a long time to dry. Hold off on more coats till the first one has dried. -Ace- Quote Link to comment Share on other sites More sharing options...
TheFatBaron Posted September 12, 2013 Report Share Posted September 12, 2013 24 hours isn't sufficient for tung oil to cure. It takes a couple days, at least. Definitely thin it as suggested. I assume you're wiping off the excess before allowing it to dry? You may want to give it another wipe down after 12 hours to get any oil that's come to the surface off. I find tung oil that stays on the surface takes forever to cure, and often gets quite sticky in the process. Quote Link to comment Share on other sites More sharing options...
Paolo Sturaro Posted September 12, 2013 Author Report Share Posted September 12, 2013 yes, i wipe off the excess after 30min. This is a crappy finger jointed beech board, not a "one piece of wood" board and is very thirsty. I've already done six coats and the looks is quite good to me… Next time i will definitely take more time and wait at least two days between coats. Quote Link to comment Share on other sites More sharing options...
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