Issue with weld constraint!

Hey !
I have made this system :
robloxapp-20230410-1152560.wmv (2.4 MB)
But the problem is, when I rotate the arrow the face rotate too cause I have a weld constraint between these two !
How would I keep them stick but not orient together ?
Have a nice day and thanks you for the reply !

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I did not watch your video, but if you need two parts connected but only one moving, I suggest you check out a Hinge Constraint.

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I tried but it does not work maybe I have do it wrong but can you explain more how I should do this, Iā€™m a beginner in constraint and body force ect ā€¦

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