I've used steam a seam but found that if I used too much heat it would not stick where I needed it to stick. You need to be careful with the heat temperature. Heat and Bond does hold, but if you are sewing over it, my machine skips stitches and the needle gets gummed up. Its mostly for projects that don't need to be stitched. My favorite is wonder under, but if it is old it tends to separate from the backing paper which makes it harder to work with, but it does still stick. 505 is a spray that sticks things down just enough to work with, and doesn't leave the project stiff after sewing like the fusibles.