![]() ![]() Okay, kidding! Of course that’s an obvious answer, but there’s more to it! While heat-setting only needs to be done at the end, it should be done if you plan on leaving your jeans or jacket unfinished (in a cold atmosphere) for awhile.Ĭonfused about what heat-setting is? Read my Denim Painting 101: How to Heat-Set blog post to learn all about it! I believe this is due to sitting in a cold garage for so long without being heat-set. The paint is pretty brittle now and cracking even without stretching. I have one jacket that I painted a base layer of white on and then put back out in the garage for painting at a later time. Just recently I went out to the garage to look through my giant rack of denim jeans and jackets. It sat for too long without being heat-set. I don’t have any actual evidence to back this up, but so many people have issues with cracking that I want to throw all my ideas out there in case it might just be the reason you’re having cracking problems! 3. While it is nice to thin out acrylic paint when painting on a canvas, DO NOT do this when painting on denim! It’s okay to have a mildly wet paintbrush when painting with denim, but do not intentionally add water to the paint to thin it out.Īgain, this is just a theory, but I feel like adding water to acrylic when painting on denim can cause problems in the future. I have not had this experience with my paints as they do not contain any fillers. This could also be due to low-quality paints. The top layer shrinks, but the layer underneath doesn’t, causing the top layer to crack before the bottom layer can completely dry. The layer on top dries out faster while the layer underneath takes longer. The same thing can happen when you paint too thick. Take it easy on the paint! Have you ever left a blob of paint out and let it completely dry? Sometimes it cracks because it shrinks as the moisture leaves it and it dries out.
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