Wait, actually most of those oil filled radiators don't put out a ton of heat from the bottom. The heat radiates from the fins, not the base plate. The plastic feet melting is more about the unit tipping over and the hot metal touching the floor directly, or the cord shorting out. So a cement board underneath wouldn't have stopped the wheels from cracking, that's just a cheap part failing. I do agree about strapping it down though, that's the real fix. And honestly, if you're leaving it on all night unattended in a workshop full of cedar planks, you're playing with fire no matter what surface it's sitting on.

Man, here I was watching a 20 minute video on how to fix a squeaky chair with a custom 3D printed bushing and all I needed was a wine cork and a bartender who clearly gives zero about the volume of his pours. That's the kind of life hack that makes you question every subscription to a DIY channel you ever paid for. Next time my car makes a weird noise I'm just gonna hand a bottle of whiskey to a mechanic and see what happens. Probably end up with a cork in my engine and a worse problem, but at least the bar tab will be reasonable. Some folks got degrees, this guy got a wine key and common sense. Absolute legend.