Thundurkel - Good question, but I think it would be tough. To make BHO you really need a larger container with holes at both ends. Also, the pressure of the butane happens naturally from its expansion as it turns into a gas, so I don't think there would be much use for the plunger. Now, if you had said an ISO wash or ISO-HO you might hava a good idea there. Pack the tube with super high-quality trim, fill to the top with ISO, put on small hole disk, allow it to stand for an hour or so, then start to screw her down. You wouldn't get much quantity, but I bet the quality would be pretty cool.