here is how to make a dirt cheap, simple vaporiser, ill try find a link too:

1) get a screw on lightblub- preferable a clear one, high watt might mean stronger?

2) cut off the end, using a pocket knife the metal cuts easily.

2 part 2) use a screwdriver or the pocket knife to clean out the filament/glass bit inside so its just a bulb with a hole at the top a cokelid screws onto.

3) make the end a nice cut so a coke bottle lid screws onto it.

4) put a hole in the cokelid that fits a straw.

5) put finely chopped herbs into the lightblub.
6) put on lid.
7) gently heat bottom of bulb with a flame, so you can taste it but it does not taste of burning..

8) continue heating, suck through straw, HOLD in lungs for as long as you can (its just warm air and THC so its not bad for you at all)

9) repeat step 8, shaking bulb occassionally. When it tastes like toast and the weed inside is dry crumbly and begining to go brown, then there will be no THC left.

to make sure chuck that left over into bud butter or alcohol or mix it with some real weed and sell it to kids.

(note- you will not need constant flame, all you want is to get the glass to 200c to vaporise off the THC)

ill try go find a picture thing but its really simple.