Your cool on the questions
I hope my explanations aren't too long though
I had a lotttt when i started.
yes bud will yield more than trim just because of the sheer amount of trichomes on the bud.... the frostier the trim , the better the oil... I wouldn't be using fan leaves, just cola trim..
i dry and cure my product before running it to oil, including trim... but i'm kind of lazy... I would dry it to bone dry so it can suck up the butane better and the trichomes would be more brittle...
it's all about the trichs
by nature of THC-V breaking down, after 3 weeks cure your product is more potent by mass of THC. So you might have stronger oil after 3 weeks? IDK this would need scientific testing, but i'm patent as it is so I always wait..
as far as strain mixing, yes I do this a LOT... I find I prefer the single strain oils though.....
Have you ever mixed sodas? Like orange soda, sprite, and mountain dew... thinking you will have a super soda, but you find you just taste all of them together and lack the CRISP clear satisfaction of a single soda? Same thing with oil.... You taste all flavors together, and it's good dont get me wrong.. from my experience i just find it gets less interesting faster, and It gets slighttttly runnier.. ever so.
That being said, I collect shake and just mix them together, because I hardly have 28-56g of shake that is all from the same strain.... then run them in one tube....
But the days I have ONE fire strain to run into ONE batch of oil are the best... and I find this to be the best quality of oil, best color/texture and consistency.
How much does tane run in the UK? I'm paying $50 a case plus tax.. so $US 54.90 something for 12x 11oz cans.
I think Colibri is the best brand out there? you want like 5x filtered butane..... you can test your butane by getting pliers and getting a CLEAN mirror wet with the butane.... once the butane evaporates there should be NOTHING left on the mirror. It should be squeaky clean. If that happens you have GOOD clean butane... if there is residue on the mirror you DON'T want that butane, as the residue will be in your oil