How do I get a block face/side, from a rotated part, while still being accurate

[Catstiik (Catstik)]

I have a system where the mouse does a raycast to blocks, I need to make it to where you run a certain command it gets a NormalId, I have a system for this already, it just doesnt work with rotation, rotation offsets the NormalId

pretend this is a rotated part, and you need to place a particle emitter on it or something, and you are getting the side of it, and since its rotated, it will be on a completely different side.

I have pretty much tried as much as I could.

This is what I have so far.

function f.mouseBlockSide()
	local target, pos = f.raycastMouse()
	local offset = pos-target.Position
	local lNum = 0
	local largestAxis
	for _, axis in pairs({'x', 'y', 'z'}) do
		local value = offset[axis]
		if math.abs(value) >= lNum then
			lNum = math.abs(value)
			largestAxis = axis
		end
	end
	if largestAxis == 'x' then
		return Vector3.new(offset.X, 0, 0).Unit
	elseif largestAxis == 'y' then
		return Vector3.new(0, offset.Y, 0).Unit
	elseif largestAxis == 'z' then
		return Vector3.new(0, 0, offset.Z).Unit
	end
end

[BobbieTrooper (Jaz)]

Is this something ur looking for? Look at the solution.
How would I get the face of a part that the mouse is pointing at? - Help and Feedback / Scripting Support - DevForum | Roblox

[Catstiik (Catstik)]

I’ll check this out. Thanks, testing it now.

[Catstiik (Catstik)]

Okay, it does not work, well… yes technically, but its what I had before, but more code. im trying to make it to where it locks onto the rotation as well.
Should that work there with rotated parts?

Edit: it seems to work, but sometimes uses the wrong face sometimes, but works better than before.
Thanks!