Hello,
Got a few questions about the above product, I hope you can answer them for me?
1. Do I need a release agent for an RTV mould casting a polyurethane item?
2. Is polyurethane okay to paint over with normal domestic gloss paint. Is there any special preparation needed? If not can you suggest another castable product that will work and that I can do in a simple workshop?
3. Is there any sure fire way of not getting any bubbles in either the silicone when moulding or the polyurethane when making an item. I'm thinking some sort of vacuum technique like you use on your composite products? Or is there some sort of chamber that would apply a low vacuum so that the bubbles are drawn out?
4. What sort of heat does the RTV generate when curing, I'm moulding from a plastic, probably polystyrene component. Will this survive the process?
5. How many items can I cast from an RTV mould before I need to renew it.
As you can see from the above I'm new to these processes.
As for the composite side of things I can see loads of possibilities for those but lets get this problem out of the way first.
Thanks for any help you can give me.