My First CoreXY

[curious aardvark]

I use a similiar type duct on the rep clones.
Okay for everyday cooling - but for large beads and thick layers you really need a focused nozzle blowing from each side of the print head. That stuff needs cooling fast.

petg for structural parts ?
Hmm. I find it really soft.
If the parts don't get hot, I'd always go for pla. It's LOT more rigid and also has enough give to take pretty high stresses.

Mind you for stuff that needs to be both tough and rigid - PET is my current favourite.
Mainly because i can't afford ninjatek armadillo.
That stuff rocks !

Just don't see the appeal of pet-g for non-thermo purposes.

I did make a garbage gobbler cover out of pet-g and that gets the boiling water from veggies and pasta poured straight over it.
Holding up really well. I'd previously gone through 2 pla ones.

But for a bracket on a 3d printer - always pla.

And yeah, I did spot the fact that the carriage is always on a square.
But that square also relies on the end supports to keep the linear tracks level.
So any independant movement of the uprights will throw little inconsistencies into the print.

But you know: a removeable giant toblerone bar - come on, it's what the mumu was designed for !

We really need to get you another hobby - one that needs lots of big 3d printed things.
that way you might actually finish this beast and start using it ! :-)

Ask the kids - they probably have ideas for big things you can print for them :-)