I don't keep old posts so had to start a new thread. This is just to say thanks to whoever posted the tip about adding cornflour to 'ordinary' silicone rubber sealer to make it set faster. From time to time I make bow bumpers for model racing yachts and having given it a go am delighted with the results. When using just the plain sealer you can never be sure how long it takes to set in a mould. In my simple test it set overnight and could have been even quicker I guess
Henry