For example, say I want to set an attunable station to a particular set that requires completing a quest. Can I go to a friend's house who already has that station and use that to set my own attunable station?
The tuning is actually towards the place, not tables. You can stand anywhere in a set crafting place and tune all three.
I noticed that in some places, e.g. IIRC vampires in Alik'r i couldn't tune in front of one table, but had to search a bit where game accepted the tuning.
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