Yup I know this video... their airplane looks awesome. Anyway...
Yup, some people do their own prepregs. They store it in freezer.
It reminds me that Paul or Matt from EC staff said in a previous post they
would not use their resin if it had freeze, at least not before doing a small test part. But maybe its not concerning catalyzed resin?
If EC resins dont work with freezing, then which resin could we use? Is it more a matter of resin itself or catalyst chemistry?
The guys from Algie Aircraft use their prepregs, and they do super cool stuff with it (I'm in love with the propeller). But what is their goal? 100% pinholes free panels or the less resin as possible (and well, pinholes can be filled before clearcoat, right? ). And, they use an autoclave, which helps greatly compared to ourselves, DIY'ers.
But then why do aeronautic and formula one people use commercial (but high end) prepregs? it would save them
TONS of money doing it themsleves but they dont do it. So another question would be, for me at least : what is the major difference for a same resin, between a man making his prepreg and a machine doing prepregs? Is it just vanity of saying "i used high end prepreg and you cant afford it, lil guy" ?
So, I bet EC guys will have to come and give their input on that.
A $1000 electronic device will always protect a 10 cents fuse