An alternative heat source

It's always good to have a backup plan :) I read in a few other blogs and build logs of toaster oven conversions that conventional heater elements can be difficult to control precisely. Like turning an oil tanker.
Last year I bought a heater for when we go camping with our family tent. It uses some different heating elements that warm up a lot faster.

Yes, it's bright! And it heats up fast! But it's a different kind of heat. I guess the IR frequency is different. The element gets seriously hot though.

That's 460+ degrees C, and in about a minute.

Each element is 400W. There's three elements in the heater and it has a bunch of reflective material which could be reused. The heater was something like 15 EUR. One disadvantage is that the elements are just 20cm wide, the oven is 35cm.

For now I'll just stick with the oven as it is and try out some insulation. But it that's not going to work then It's good to know there's something else I can try.