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I'm sure the paste will work in exactly the same way if it isn't still the same product. I love tooling putty, it makes a lot of jobs so much simpler. A couple of things to watch out for - it traps voids very very easily, which can then lead to blisters on the gelcoat. I would recommend watching EC's updated video on how to make a high temperature mould using tooling putty. This video demonstrates a different technique in applying the putty where you do little pieces at a time rather than the whole lot in one go, which is very important in reducing trapped voids.
Secondly, be wary of potentially thin sections going over any male radius. If you're less than 10mm thick, the stuff can be quite brittle and you may snap it when demoulding. Male radius tend to be the areas where you go thinner, so just watch that.
Glad to see any update, I did enjoy following this thread. Vacuum forming interests me alot, so I'll be following along again!
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