tboyce58 Report post Posted June 16, 2014 What's the optimum ration for contact cement to thinner? Quote Share this post Link to post Share on other sites
papaw Report post Posted June 16, 2014 I think a lot depends on type of glue water base - solvent base reason for thinning to thick or to keep thin to last longer. Most all manufactures have a thinner for their glues, but after it starts to set up it is gone in my opinion, if you do thin it at that point it may not hold very well. I have never tried it but I've heard Toluene at Lowes will work with Dap. Quote Share this post Link to post Share on other sites
silverwingit Report post Posted June 17, 2014 Toluene is a nasty carcinogen. Use the thinner recommended by your cement's manufacturer and don't wait until the cement gets too thick and "globby." Some leatherworkers like their cement on the thick side. There is no one size fits all formula for thinning, but you must use the correct thinner. Michelle Quote Share this post Link to post Share on other sites