By mikew - 7/11/2012 5:20:58 PM
I have a part from which I want to take a mould - it's around 50cm long by 46cm wide at the widest point. I'm unsure as to whether the ready mixed epoxy fibre kit would be best or the uni mould kit, and which size to use if the former. Guidance on this would be great.
It's a small motorcycle fairing and is curved so part of it touches the board and the top is about 6 inches of the board. I've watched the video and saw that when making a small part, modelling clay is used to created flanges. I could do that with the part it would just need a fair amount of it (46cm across by about 15cm high) to bring the moulding cloth/putty down to the board. Is that the best thing to do? Or better to cut out sign board and make flanges that way?
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By mikew - 8/4/2012 1:06:08 AM
Cheers MAtt that's really helpful. I've ordered the polish and a few other bits. I managed to get the plug to a reasonable standard with 1500 and lots of (mould release) wax coats and polish. The mould will need some work but it shouldn't be drastic. My only problem so far has been the pot (both coupling and reinforment resins) exotherming even with the % MEKP being right at the low end and I've only just been quick enough to get the layers on. I'm doing it in the garage without heating, the temperature is around 20 degrees I'd guess.
I have the fast hardener for the laminating resin so I may put the resin itself in the fridge for half an hour before mixing to try to increase the pot life .
I also suspect that the coremat is going to make the part too stiff but I'll make one of each and go from there.
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