// Definition
The concept that pressing hash through a fine screen (25 micron) using rosin technique removes wax membranes, cellulose, and other plant contaminants from the trichome heads, leaving behind a further-purified oil. The process essentially dewaxes the hash mechanically rather than chemically.
// From the Episode
A major scientific debate in Ep 028. Bubbleman calls it further decontamination beyond what bubble hash already achieves. Jeff (Aqua Lab) argues the wax actually melts at pressing temperatures and what remains is cellulose, not wax. Mark Scialdone explains the phospholipid membranes thermally decompose into noxious compounds on a hot nail, so removing them via rosin pressing is healthier.