I have moulded pre preg carbon parts off acetyl moulds and it works great without any release system applied. Although being pre preg the oven heat expands the acetyl a small amount and this helps with the carbon part self releasing when it cools and it falls off, literally.




For a wet laid part it may not release as easy without the heat/expansion.




Hot air guns work well with the shrink tape but I worry about your stepped mould shape as these tapes are not so good with tapered parts or shapes as the tapes tries to slip off as it is wrapped and can slip further when heated/shrunk. It needs a min heat to shrink so going slow may not heat it enough. You will see it shrink as you go, so you know then to move on.

Apologies if this is the wrong forum or has been discussed many times before, couldn't find anything definitive using search.