What have you 3D printed for your TJ?

[sab]

Red version is scaled using the Anykubic slicer which is very close to fitting but the taper is misaligned.

Explain what you mean by that. I can't reconcile that with the photo. It looks to me like the print may have warped.

Black is scaled using fusion but fails (twice) when printing the second end.

Again, seems like a printing issue, not a modeling or scale issue.

FWIW the unmodified version of model we’re modifying printed multiple times and fits great.

With the original's shape, I bet you printed it with the + touching the build plate because that's the only logical way to do it. How did you orient the modified version? That one's not so logical, and I learned from my center console project that slender objects are challenging to print. I think that's the biggest problem you're experiencing, and the only advice I have is 1) you need a lot of patience, and 2) you just have to keep experimenting with orientation and settings.

MLS SAB is scaled in fusion
Other is the slicer

You posted a zip containing the g-code files. Those are the instructions that the printer follows to make the print. There's no way to view a part in Bambu Studio or Fusion with the g-code file that I know of.

I think, from your last photo, that the scaling is correct. You just have some printing issues. I've said it before in this thread - 3D printing, even with Bambu's "easy button," is anything but easy. I've got two (more - add them to a long list so far) models I'm trying to print currently that are giving me grief...

 

[Rut Row]

I've said it before in this thread - 3D printing, even with Bambu's "easy button," is anything but easy.

amen.