I have info I came accross online that has the person making a incubator in a mini frig (mine is smaller than the one they use, mine is almost like an entable size mini frig) than what this person made their incubator in. & they say lower on the page they ultimately used (2) strands of 2ft long 11in wide flexwatt heat tape. They wired it as to plug directly into an outlet, but instead of plugging it directly into a socket, they got a reptile thermometer that the flexwatt plug plugged into to regulate the electricity to the flexwatt heat tape inside the frig. My small frig would surely need only half the amount of that for heat. From what I've researched the thermometer has an electrode wire (like the hydrometers people put inside incubators) so it can monitor the heat inside the incubator & when it hits that certain heat amount it cuts the electricity off to the flexwatt tape. The thermometer has an adjustment on it, which I'm sure will take a little bit of messing with to get it to the right temperature. But it even has a protective cover so the setting on the thermometer can't be 'bumped'. So that seems nice. I like the idea of not having to add metal to the frig to disburse the direct heat from a light bulb. I'm 'leaning' towards this basic concept, but I know many people have success with varied designs.
Oh the link for the incubator is at:
http://www.arbreptiles.com/cages/incubator.shtml
& another link where flexwatt tape is used is here:
http://www.arbreptiles.com/cages/rack.shtml
So I'm 'guessing' it must be widespreadly used in the reptile world. Oh & the heat controling thermometer is a meter that's used for heat rocks to be plugged into for reptiles, so it's used for the purpose of regulating a heat element by controling the electricity.
Wow a Real expen$ive thermostats can be. Oh the thermostat I'm meaning is relatively cheap @ $22.99 & it controls 'multiple devices' it says, & I only want it to control One device. It's here:
http://www.reptiledirect.com/index.asp?PageAction=VIEWPROD&ProdID=112
Only bummer is I read how flexwatt is supposed to be kept at 95 degrees
& I've read egg incubating temps are to be 100 or as close to it as possible. That's 5 degrees over what flexwatt is recommended for. But even the light bulb ones aren't prob 'technically' supposed to be used hot like for incubators. I've also read people using waterbed thermostat heaters for a heating element too. Gonna have to research that now, hmmm.