Actually I was thinking cooling the abs down really quickly would probably stop it warping quite as much.
If every layer goes down at the same cool temp - then you won't get that gradual temperature gradient that causes the warping - because it's already been shrunk.
It's a theory :-)

And it's the first few layers of abs on any curved surface or printing very small items that are my issue the fan should sort.

The level bed seems to have sorted abs warping. Well i haven't had any since I got it.

Also thinking it'll help with the stringing I get with the nylon 618. And maybe reduce warping on that as well. Particularly as it prints on a cool bed.

Soon as I get it hooked up to some juice - I'll let you know :-)

ps. what's a 3dhubs thingo ?