hi all ive been trying to come up with a soultion to heat my workshop cheaply.i have found a site that gives plans for waste oil burners, i know these are avalible comercialy but at a price, the desin is of the vapourizing princible with a oil feed pre heater all built in to a old hot water cylinder, id be interested if any one has tried to build anything like this. im going to experiment when time alows not near anything of value though! regards andy