Jar mill , prechilled , and add chunks of dry ice to reduce loss of material on milling balls and interior of the jar . The use foodgrade ethanol to wash milling material and wash out the jar , recover cannabinoids from that for reuse . The big warning would be to vent the jar , so it doesn ' t explode from pressure formation as the dry ice sublimes . ColeParmer makes HDPE jars , but they ' re considered disposable and expensive , but they may be reused many times , I don ' t know . Widemouth water bottles would probably work , and then drill the lid . Or use a conventional alumina jar and stick in a piece of rope before clamping the lid down so there ' s a gap that allows carbon dioxide to escape . Put some tape around it to keep too much stuff from tumbling out .