Hello, i'm attempting to make some 3d stickers using the EL2 Laminating Epoxy, turns out this is the wrong resin. So I have brought some doming resin, however this isn't seeming to cure correctly. 
My issue is i'm justing making this stuff in my bedroom, once everyone including myself it out of the house and at work the heating goes off and my room will not remain at 24 Degrees, it can go down to around 10 degrees I think sometimes for most of the day until everyone is home. 

Now, i'm not too sure if anyone on here can answer this question, but my plan was to make a little box with a small USB heater in it, and a cut off circuit to turn the fan off once the air in the box hits 25 degrees, so it stays at that temperature, maybe then my resin will set!? 

The question is, will the below product work within a USB powered circuit, so 12V, as it says on the product 240V.

N.C.KSD9700 Temperature Switch Control Thermostat Thermal Protector

I have brought this TINY fan, which should do the job as 25 Degrees isn't exactly that hot!

100W 12V PTC Heater Fan Air Heater

This question will relate to when I come to use the EasyComosites resin which I plan on using next year as I will have the same issue!

Thanks.