So I am doing my first real pre-preg tool.  The mould I had made for me has had issues........ loads of stress cracks appeared after only a couple of pulls.. Not looking for answers or reasons why that mould has had issues. I got so pissed off that I looked into a dozen different things and all I got was dizzy with each person giving me a different reason.  So I took one I had made and lacquered it to get a good finish and to remove some of the raised areas where the original stickers got left on the tank when it was moulded.  I put it back into the mould and have started to remake the mould using pre-preg carbon tooling. So far it seems to be working.. I have done the top section already and although I have not removed the section from the part the flange areas look perfect and if the rest of the mould comes out the same way I will be happy. Having had numerous quotes to remake the mould for me including a quote from the person who made it in the first place (he seems to feel it is other reasons and not his work that has caused the problem). I have bit the bullet with some Tooling from SHD. 

I will post updates as I go and hopefully in a few days will have a finished working full carbon pre-preg mould. 

Just done the second section, the side. I did take this off the master to have a look and see how the tooling works. The original test tooling did let you see the glass weave on the surface so I didnt want to use it as it may leave an imprint or possibly the part may start to damage the mould in that area as there was so little resin. But this looks great. The finish looks spot on the mould is half the weight of the old glass one but is feels stronger and for what may be a limited run of fuel tanks should be more than strong enough. I never imagined making more than about 10 to 15 from the original mould anyway and I have done 4 of the first batch of 9 tanks already so it may only ever make another 5 tanks as the bike was not so popular. 

Original mould section


New mould section..