Well I managed to break my arm the other day and while im sitting here not doing anything (Dr's orders) I have been reading up and looking at my arm thinking. The cast is strong enough to hold my arm stationary, 3 wraps thick, and strong. It didnt create any heat and only took minutes to harden. Now im not a Dr. nor anything close to it. I havent looked into what the cast is made out of or the cost of the material. I was just pondering, that for a small quick job with more round edges verse hard edges, that this cast material might be a good easy way to make a mold of something you are only going to make a few parts from. time wise if would be ready to make a part of in minutes so youd save money in time. The one major downfall is that its not a smooth finish so youd have to fix that issue, or maybe just use to ti add thickness and layers after the gelcoat and some layers of fg. Anyways just off in a tangent now. lets hear what you think

Yeh have a look on YouTube for how to make composite cooler piping for cars. There's a good video with a guy using that same stuff to make a quick pipe. 

I know this is being done and good thinking you have, been playing with the idea as well but havent found time till now,

That's the one! ^ haha

I don't really see the point in using this sub-par material? Apart from its speed, but you have fast hardeners to achieve fast results. You could wrap and shrink-wrap/bag a mandrel using a high-grade material of choice, or if you were to go the professional route, I would create a mould and the complementary inflatable bladder and make it like that from the carbon of my choice. Strongest and lightest by far, yet not the easiest way. Depends what you are aiming for.

cheers

Well it's certainly not sub-par as far as creating a plug is concerned. Not even fast hardeners will let you achieve something nearly as quickly as this stuff, so it is appealing from that point of view. I wouldn't use it for anything more than that, but I am currently making my cars intercooler piping and for the pieces that I don't need to do a 3D drawing of and can just do a straight copy, this stuff is a lot more appealing because it saves so much time in both curing and in not needing to prep the surface of my current piping. It's a lot easier to sand the welding lines out of this stuff than it is out of stainless steel.