This question (which I think is clear and demonstrates effort in the question formulation) seems to fit here, observing tags like luggage, hand-luggage, luggage-gear, luggage-storage, and questions like this and this, TO the DIY community where it is not on-topic as described on that community's page. (I had checked there before posting here.) Why was the question migrated there, in terms that could help guide future decisions proposed for migration along the same path?
Well I did ask in a comment on the Q whether it might be better on DIY, mainly because I felt repair work was off-topic here. It's not a travel question, I don't think. Others might disagree.
Then you can see that the mod migrated it.
It certainly hasn't received close votes on DIY, so they don't (so far) seem to consider it off topic there. However, I'm no DIY expert, so I can't comment on that.
IMHO, if it wasn't migrated, it'd likely have been closed as off-topic. So far, it looks like it's doing better there (no close/down votes).