Welding Script doesn't work exactly as intended?

I'm currently having a problem with my weld script, and the problem is that the script welds for only one part and doesn't weld any other, even though it's using a for loop. I think the root of the problem is that when it welds, it only welds the first child because the "i" is identified as a one, so the script welds the first child only. When I change the "i" into a different number, such as 3, it welds the third child. I don't exactly know how to fix this issue since I didn't originally create this script. Anyone know how to fix this problem?

function weld(x,y)
    weld = Instance.new("Weld")
	weld.Part0 = x
	weld.Part1 = y
	local CJ = CFrame.new(x.Position)
	local C0 = x.CFrame:inverse()*CJ
	local C1 = y.CFrame:inverse()*CJ
	weld.C0 = C0
	weld.C1 = C1
	weld.Parent = x
end
function Get(A)
if A.className == "Part" or A.className == "WedgePart" or A.className == "UnionOperation" then   
	weld(script.Parent.Part4, A)
	A.Anchored = false
else
	local child = script.Parent:GetChildren() --Mainly This Code
	for i = 1, #child do
	Get(child[i])
end
end
end

function Finale()
Get(script.Parent)
end
Finale()

Your problem is that you haven't put a loop there!

Get rid of that Finale() function! That's part of the problem!

local middle = script.Parent:FindFirstChild("Root") -- Assumes there is a root part. You can name it to whatever.

function weld(x,y)
    weld = Instance.new("Weld")
    weld.Part0 = x
    weld.Part1 = y
    local CJ = CFrame.new(x.Position)
    local C0 = x.CFrame:inverse()*CJ
    local C1 = y.CFrame:inverse()*CJ
    weld.C0 = C0
    weld.C1 = C1
    weld.Parent = x
end

function StartWelds(model)
   if model then
      for i,child in pairs (model:GetChildren()) do
          if child:IsA("BasePart") or child:IsA("UnionOperation") then
              weld(child, middle)
              print(':D')
          end
      end
   end
end

And there you have it! If you have problems, tell me and I'll fix it!