Cheap and effective. Go to the plumbing store and buy a length of 1.5 inch pvc pipe and some glue and two end caps. Cut a length of your piping somewhere around 10 inches ( one OZ = 6g oil ) and then one cap you will drill a hole right completely, through the center the diameter of the inside of a butane can nozzle and then partially though the same hole with a bit the same diameter of the outside of the can nozzle so that placing the nozzle in the hole and depressing the can will discharge its contents and glue it on one end of your pipe. The other cap drill numerous small holes. Now stuff the tube with as much dry powdered bud and pack some coffee filters into the bottom cap and force it onto the pipe, stick in the freezer with the butane cans or better yet a bag of dry ice, then when as cold as you can get it and blast butane through into a metal container. Degas by using warm water then boiling water as a safe heat source, then finish off on a hotplate. Make it just start to smoke then withdraw and repeat until all of the bubbles are gone, cool down and enjoy spread it , dab, it eat it, smoke it.