How do I make it not be in the center of the other part?
How did you get it to do that?
Is there any way to do this in roblox studio? Having a script do it would cause lag.
I want to have a ton of moving parts in my game, a lot of them having stuff on them. It would be too inefficient having tons of weld scripts everywhere.
You can do it by changing Weld.C0 and Weld.C1 (complex stuff)
more info: Weld | Roblox Creator Documentation
C0 and C1 still require for it to be run in a script, is there any way to do this in studio?
No. C0 and C1 are not shown in the properties windows.
So there’s no way of setting a welded part’s position in studio?
There is no way of setting it without using the command bar or a script (as of right now)
Nevermind, I forgot I can use this to weld parts in studio. 
Thanks anyway!