How to orient tray

This tray is designed for an MFT workbench. (Unfortunately, I can no longer find the STL file on printables.com, where I originally downloaded it. If anyone can locate the link, I would greatly appreciate it.)

I printed a test copy in a vertical orientation without supports. Surprisingly, the large unsupported surface printed well, with only a bit of stringing.

What is the best orientation for printing this model? Are any supports recommended, and if so, what kind?

I would try to print upright (second pic) without supports. Gravity ruins everything so you want the guides, which have a profile that really matters, be aligned with it.
If printing without supports makes the top edge sag too much, I’d move onto default settings with tree supports making sure ‘on plate only’ is checked.

Looks like the original was removed, but there is a remix that adds a cutout here.
https://www.printables.com/model/303565-mft3-tray-with-cutout

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Yep, this seems best to me as well.

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I don’t think the second orientation is printable without supports.

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Thanks for pointing me to the remix. That one has a curved surface leading up the side walls that will be horizontal in the upright orientation. This could be helpful in printing without supports.

Will report back on how it does. (Now printing with PETG-CF.)

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Unfortunately, I can’t get more than a third of the way through with
out stringing. (Printing with Bambu PETG-CF, directly out of a filament dryer at 60C.)

Egads… Definitely NOT where I would have expected things to go wrong.
Is the part coming off the bed? If that’s the case, maybe 60C isn’t hot enough… I personally couldn’t print PETG on A1 mini at 70C. Had to use 80C. It’s been great since then.

Do you mean 80C in the filament dryer or on the build plate? The part is stuck hard to the textured build plate, so no lifting.

In case it helps diagnose:

  • 0.6 nozzle
  • 0.30mm Strength @BBL X1C 0.6 nozzle profile (default)
  • textured PEI plate

Bambu Lab X1-Carbon
failed-print

I meant the build plate. But at this point I’m out of my element, sorry. Assuming you are using the right filament and plate settings, I don’t know what the issue could be.

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Regarding your initial question: Maybe printing it on an edge might be the best? Sounds stupid but the guy in this video makes some very good points: https://youtu.be/8NKVNwVaZU0?si=hfrdBsvqh_BEipi5

Thanks for the link. An intriguing idea. I guess the supports he’s discussing need to be created within a modeling package, and not just in the slicer.