Been doing dewax column for a bit, works ok but I'm looking for more of a full dewax from a system. I've been using a combination of a few different filters starting with coffee/150mesh, 25u stainless, and 11u whatman to help clean out as much as I can but still feel like it's not a true dewax. Having some custom lco2 spool and heated pour bowl that should be here in couple weeks and 3 custom inline filters with hopefully a 2u at the end, with these parts I'm gonna move to a dual tube setup on a rack where first one will be standard blast and the second tube will be deep freeze long term dewax with filters after and this should hopefully provide true single solvent dewax. Bizzybee has been a huge influence on my thought process as my machine started out as an MK4c and is now Frankenstein into my own thought processs.
For now trying to play with soak times, haven't gone overnight as I don't think the dry ice would last, but been doing 2 hour soaks with two pulls per batch with good results that are clear and very clean smoke. Was doing 30 before and feel like results were similar but can't tell without having similar batches to test with. For the most part it lets me take some ugly ass trim with not much to it and turn it into something with a little less brown. Did a couple "live resin" runs where we froze buds in dry ice immediately after harvest, took them to blast sight, packed and blasted in deep freeze and came out great had done this before with open tubes and yield was miserable, with the soak we were able to at least hit decent yields off nug run.
They got the process pretty much, run/soak buds in butane, then collect mixture in bottom pot, use heat to turn butane to gas and collect gas in another pot while hash is distilled out basically. Not a very hard process at all, just a matter of making sure you're safe and smart with things and have the right equipment, it's definitely not the ghetto-riggers ideal scenario as things can get ugly.