Very good question! I'm actually curious myself how this is done without screwing it up and also to maximize the total number of cannabinoid compounds. Different web sites list different values for vaporizing THC (365 F to 392 F). To make it even more complicated, some of the other cannabinoids vaporize at lower temperatures. I've even seen the range as low as 280 F. If you vaporize the THC, the weed will be worthless, and you might accidentally get high just from opening the oven door.

Some ovens have a temperature cycle. So for example, if you set the dial to 325 F it may actually heat up to 375 and then cool to 275, heat up to 375 again....

Some of the web sites for decarboxylation say that you can do it at lower temperatures for longer periods of time, so I'm thinking the best method would be to set the oven at 200 F and bake for a couple hours. Has anybody tried this?...