finally got round to trying it and I'm stuck on the very first hurdle; my mix was sitting for 4 hours, no emulsion, but no separation either, maybe ~10mls limonene sitting on top of very sludgy cactus.  So I made myself a coffee press from a bit of a sieve, a pen and a screw and tried to squash some solvent out of the mix, but this did nothing except mix the tiny limonene layer back in.

I was kind of sleepy, and forgot to scale up the other components to match 120g of cactus powder.  This probably has something to do with it.  I'm about to add another 20% of everything else to the sludge, mix it and leave it overnight - in the meantime, has anyone else experienced this / got any tips?  I don't want to add any more water...