Arrange tool not flattening leaf component

[kelly_huangE]

Hi, apologies if I am doing this wrong. I created a reply to this post and realized maybe I should have started a new one. I can't seem to delete the old post so I'll edit it to point here.

Trying to use the arrange tool for leaf components and it's just dropping the entire component into the arrange. I've made a dozen attempts over days to make this work with different permutations of steps and configurations but no luck. I have done this before and am unable, potentially after updating Fusion. Here's the steps I generally follow:

1. Create a manufacturing model (model from design is duplicated in)
2. Edit the manufacturing model
3. Remove any subcomponents from the components I am arranging in the duplicated model (such as the cabinet handles from McMaster)
4. In Solid -> Modify, select Arrangement
5. Add the component (in this case a drawer)
6. Set up the envelope (I am using the XY plane from the mfg model Origin)

When I select a different body in the component, it simply selects a different face to align with the selected plane.  Also attaching the model with the broken arrange in it. 

This seems to be different than the recent past where the bodies of the component would be laid flat, largest face down.

Environment:

• Fusion 2.0.19994 arm64 [Native]
• macOS 14.6.1 (23G93) on MacBookPro18,4

Any thoughts appreciated!!

[kelly_huangE]

Hmm, not sure if I've asked a bad question? What other information can I provide? Thanks!

[kelly_huangE]

Getting desperate enough to save the diagnostic logs and search for "arrange". Very interesting how the QT API works with the HTTP endpoints of various services. Didn't see any errors that didn't have `IGNORED` on the log line. 

Is there some way to turn on verbose logging for the arrange command? Thinking there must be some log message that indicates why they arrange fails for my design. Maybe from there I could self-diagnose.

Pretty sure the diagnostics won't help anyone else either, but attaching them here all the same. 

EDIT: I'm starting to wonder if my components are not pure. How can I check this? Is there a way to inspect my model and the component dependencies? If I have broken components, how can I debug them instead of replacing them?

Starting to think after reading https://forum.freecad.org/viewtopic.php?t=50411 that understanding the internals of how this works is not an option. 

[kelly_huangE · Accepted solution]

Okay, it looks like my primary mistake here was conflating "leaf components" (each containing one body) with "root components". In other words, I had root components (the drawers) that I did not realize I could create subcomponents in and use *those* components in the arrange.

The leaf components that can be used in arrange do not care about their parents, at least in this case.