Weld.lua

Weld.lua

local weldName = string.format(
    "Weld(%s)_(%s)",
    script.Parent.Name,
    script.Parent.WeldTarget.Value.Name
)
if script.Parent:FindFirstChild(weldName) ~= nil then
    script.Parent:FindFirstChild(weldName):Destroy()
end
local weld = nil
local function make_weld()
    weld = Instance.new("Weld");
    weld.Name = weldName
    weld.Part0 = script.Parent
    weld.Part1 = script.Parent.WeldTarget.Value
    weld.C1 = CFrame.new(0,0,0)
    weld.C0 = weld.Part0.CFrame:inverse() * weld.Part1.CFrame
    weld.Parent = script.Parent
end
make_weld()
script.Parent.ChildRemoved:Connect(function(instance)
    if instance == weld then
        make_weld()
    end
end)