What about pressing flower rosin with a fine micron size bag to remove more contaminants (such as 90, 60, or even 37 micron)? Or re-pressing the flower rosin with a fine mesh (ie. start with 160micron and then do 37 or 32 micron?) ... thinking maybe the double press as you might have problems w/ blowouts etc trying to press flower directly in 37 micron ...
I'd be ok w/ even spending the money on the raw cannabis terpenes ... cost of distillate here is about $50/gram avg, which is pretty good, and cost of good quality CO2 oil is maybe $50-$70/g ... I'm not sure I can produce something cheaper for the cost of the material I am putting in, however, I can get consistent flower strains which is important to me as I find certain strains work best for me ... had a bunch of distillate and CO2 oil on me this weekend when out of town, but found myself frequently taking the time to do a rosin dab, as my rosin just "works" better ...
I guess I want control
Although real cannabis terpenes are expensive, even at a couple hundred dollars for a bottle, as long as it goes quite a ways and makes lots of 1g carts, then I'm ok with that cost ... ccell carts just work so well and the convenience is so nice!
Edit: I ordered some 60u and 37u from AZPressCo