Rapid crystallization during solvent recovery

Spot on @Waxplug1 . My theory is that isobutane is being trapped in the lattice and it finds its way out eventually forming a chalk. I theorize this isobutane inclusion is happening with a solvent blend of n butane and iso. This may also explain why I don’t see any of the “medusa” polymorph (bar shaped diamonds) as I have not been running any n butane. I will update if I get any of those shapes since I just grabbed some n butane.

Take a look at some of my armchair experiments below.
Jar on the left is offgassing and crashing out. I placed this jar in the warm oven last. Jar in the middle is sealed and has been in the warm oven for long enough to dissolve the clouds of precipitation. Jar on the right is sealed and is in the process of redissolving the precipitation but has been in the warm oven for less time. If these jars stayed sealed they would definitely blow the lid off.

Next here’s a jar of high purity extract being redissolved in isobutane. You can’t seal the jar for too long so I had been forced to attempt redissolving with the lid sealed but then cracked open a smidgen to reduce pressure. As the gas evaporates the temp drops and the solubility becomes fairly poor causing a snowglobe of chalky thca. @moronnabis had a great suggestion as to move this process into a stainless steel column, evaporate to precipitate and then pressurize with nitrogen to push those solids to the bottom. Would be a great quick crash thca tek.

(Not sure if video is uploading)

.