Consider creating a box out of something with a high thermal capacity - such as bricks. Bring them up to temperature in an oven, using an infared thermometer (found at any cooking store or online) then place your material in the "box", for the allotted time. The thermal box will act as a capacitor to smooth out the fluctuations common to an oven.Can anyone recommend the best way to 'do' the decarboxylation? My oven is WAY too difficult to hold such a constant temperature. I've heard of the "decarboxylation box", but have no idea what that is. Is this a home made gadget, commercial device, what?