smeltery

while true do
        repeat
                sleep(1)
        until turtle.getItemCount(1) ~= 0

        turtle.turnLeft()
        repeat
                for i=1,16 do
                        turtle.select(i)
                        repeat
                        until turtle.drop() or turtle.getItemCount(i) == 0
                end
        until turtle.getItemCount(1) == 0
        turtle.select(1)
        turtle.turnRight()

        controller = peripheral.wrap("left")
        repeat
            sleep(1)
            done = true
            for i=0,controller.getSizeInventory() do
                pcall(function() if controller.getStackInSlot(i) then
                    done = false
                end end)
            end
        until done

        repeat
                rs.setOutput("front",true)
                sleep(.5)
                rs.setOutput("front",false)
                turtle.down()
                repeat
                until turtle.suck()
                turtle.up()
                turtle.turnLeft()
                turtle.turnLeft()
                turtle.drop()
                turtle.turnLeft()
                turtle.turnLeft()
                drain = peripheral.wrap("front")
        until not drain.getTanks("front")

end