nice one mate will the glass break if it gets to hot have a look at my profile pics i made sum cfl refecter hoods and they r really goodhey phil le b if you go in to tesco there is mad vase two feet big and about 5 r 6 inches in diameter and cost 20 euro so a bit more in pound and then either google diy glass cutting or go on to youtube and type in glass cutting its simple enough to do hope i helped.
spliffbazz