Bronze Alloy Machine In Tycoon Not Working?

I am trying to make a machine that alloys 3 copper and 1 tin into 1 bronze. The drop collecting does work, but the drop output part doesn't work. Help?

local i1 = script.Parent.Input1
local i2 = script.Parent.Input2
local out = script.Parent.Output
local gui = script.Parent.Screen.SurfaceGui

material1 = 0
material2 = 0

excess1 = false -- Some values that buttons are going to control
excess2 = false
alloy = true

i1.Touched:connect(function(hit)
	if hit:FindFirstChild("Cash") then
		material1 = material1 + 1
		gui.Amount1.Text = material1
		game.Debris:AddItem(hit,0)
	end
end)

i2.Touched:connect(function(hit)
	if hit:FindFirstChild("Cash") then
		material2 = material2 + 1
		gui.Amount2.Text = material2
		game.Debris:AddItem(hit,0)
	end
end)

if material1 >= 3 and material2 >=1 and alloy == true then -- PROBLEM POINT
	wait(script.Parent.AlloySpeed.Value)
	local part = Instance.new("Part",workspace.PartStorage)
	part.BrickColor = BrickColor.new("Bronze")
	part.Material = "Metal"
	local cash = Instance.new("IntValue",part)
	cash.Name = "Cash"
	cash.Value = 6
	part.CFrame = out.CFrame
	part.FormFactor = 3
	part.Size = Vector3.new(1.2,1.2,1.2)
	game.Debris:AddItem(part,20)
	material1 = material1 - 3
	material2 = material2 - 1
	gui.Amount1.Text = material1
	gui.Amount2.Text = material2
end