That's what I was going to say. Raft is a great way of dealing with warping. Except the bottom surface ends up rough. But if you don't mind that then it's great. And much easier than trying all those silly techniques to get it to stick better. Another way to deal with it is to have the temp well above the glass temp (try 75C). That way the bottom 5mm or so is so soft, any pulling forces won't make it down to the bottom layer.
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IRobertI 521
Isn't this what the raft option does?
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