So I took a break from pressing for a bit, since I'd been pressing like a maniac for a few days there. Yesterday I did something a little different. Rather than pressing and dabbing one at a time, I pressed out about 1.5 grams of herb in four pucks and loaded up all the rosin into my V2 S3 oil cartridge before heading out for the night.
Anybody who follows the V2 thread knows that I've soured on the S3 overall, but the oil cartridge is the best cart of the three IMO (doesn't taste very good though). It felt wrong putting all those terps in a poor tasting vape. But I've gotta say, the pressing took me all of ten minutes tops and I had enough rosin in my pen to last me all night. Nice!
I've been thinking about optimizing puck size, meaning the diameter of the herb post-pressing. This is tricky because I figure it depends on the amount of pressure available. But, I'm thinking minimizing puck size might be a good aim for folks who are using a hair straightener, and/or don't have a pollen press or something like it, and/or can't maximize pressure for one reason or another? My thought is that a larger puck may end up soaking up its own rosin or so, if the pressure is not great enough to match.
I figure that is where pre-pressing your nugs comes in handy: higher density should mean smaller pucks? Which should mean that re-absorption and incomplete extraction should be minimized. Combined with the theory of larger (diameter) pucks needing more pressure, it's as if you can mathematically add pressure to the equation before-hand with a polin press in order to get away with less pressure during extraction.
This is all theoretical, as I don't have a means of mechanically pre-pressing my flowers yet so I can't test it out. It would be interesting to do an experiment something like:
A) Press 1g nug in hair straightener
B) Break up 1g nug into quarters or thirds and press each fraction individually in hair straightener
C) Pre-press 1g nug into a disc, then press in the hair straightener
Then compare the yields, of course. While C should have the clear advantage over A, I'm curious how much better B might also be versus A, and how close it might come to C?