Itll be really harsh to smoke alone but like slipknotpsycho said stick a bud through it and itll coat the bud.
or
use isopropylene ( 99% alcohol) found at your drugstore ( MAKE SURE ITS 99% !!)
and run a small amount through or soak it in there and once its cleaned out put the liquid onto a small plate and let it evaporate naturally. You will have nothing left but pure resin once its fully evaporated. The more you use the longer you wait.