honey bee extractor is pretty cheap. you can make your own but be careful, i've heard stories. plus it's butane. that shit is flammable. i use 300 grams of butane with about 20 grams of ground trim.
get a piece of pvc, i'd say 2". cut it about 8 - 10. glue a cap to one end. drill a hole thru cap for butane nozzle to fit into. put a screw fitting on the other end. get a screw cap and drill 8 - 12 1/32" dia holes. in it. cut a piece of screen material to fit inside the screw cap or over the fitting. fill tube. do not pack. screw on fitting with screen in place. hold over deep bowl or large dish. place butane in the single small hole. holed the screw cap end over dish. push on butane. i let mine flow at a medium level. as the tube fills with butane and pressure the crystals burst and are pushed thru the screen and out the small 1/32" inch holes into the dish. i let my butane evaporate overnight. the next day i'm get pretty high.
for screen i've heard dollar bills, but that's illegal.
maybe several paper coffee filters.
i looked at a craft store for paper but couldn't find what i need.
the oil is liquified so the finer the screen the better and purer the oil.
to fine and it may not even push anything through.
i've recieved 3 screen with my buzznbee.
i keep cleaning and reusing but that's about over with. they are getting holes.
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