Hi GrandmaSewnSew. I recently purchased some iron on nylon tricot to iron onto tshirts before embroidering. I think I got it from Fabric.com. It works great. Just iron it on the underside of the shirt and then use regular stabilizer. I use a medium tear away. I can't take credit for the nylon tricot, it may have been info I read on the QB, but it is a great help for the knits.