The problem is that a motor and for that case also electronics and a LOT of plastics dont fare well in 200+°C environment.
So just placing a fan with a cable attached to an outside source is feasable up to like 70°C. No more for sure!It is simple physics: Everything you want to operate inside an oven has to withstand the temperature within said oven.
Cables need to be silicone or even PTFE, Plastics need to be Thermoset and not Thermoplast, Electronics need to be designed to withstand those hellish temps (Say goodbye to all electrolytic caps, Almost all chips will fail quite fast in this temperature), Bearings need to be designed to work with the thermal expansion expected, and so on and on... Physics.
But i gave you an option which would work without drilling and no melting. See
viewtopic.php?p=358#p358
I converted my oven once temporarely to convection to dry my biltong at 50°C. I just placed a computer-fan in there and fed the 2 small wires thru the door-sealing to my PSU outside. But anything higher than 50° i wouldt really dare. Even the 50°C was higher then the spec of this fan (40°C ambient)
So to give an answer to your previous post: I gave you a perfectly viable answer as well as Jack at
viewtopic.php?p=315#p315
If you dont even read those suggestions which would WORK then we cannot help you any further, sorry. But as we gave you the same idea and input multiple times, showed you the shortcomings of other solutions, yet you still dont see the options given to you in plain sight, it is a bit strange to indirectly tell us we only give you useless (yet correct) answers. We gave you solutions. Use them.
Builder of stuff, creator of things, inventor of many and master of none.
Tinkerer by heart, archer by choice and electronics engineer by trade.