The problem with polyester is most dyes do not stick to it. There is a type that is heat set. This brand wants you to tumble in the dryer for 20 min or ironed for 2-3 min. I am planning to make some silkscreens to try it out. One of the problems with silkscreening is if you don't pick the right dye it will be deposited on top like a tee shirt instead of soaking in. I am thinking of trying this product.
http://www.dharmatrading.com/html/en...lnav=dyes.html
I want to use Koverite, but if it won't work, I plan to to try it on silk.