local whitelist = {1, 2, 3, 5, 6, 7, 9, 10, 11}

local function scrapCount()
	local count = 0
	for i = 1, #whitelist do
		count = count + turtle.getItemCount(whitelist[i])
	end
	return count
end

local spreadScrap()
	local count = scrapCount()
	local eachSlot = math.floor(count / #whitelist)
	for i = 1, #whitelist - 1 do
		turtle.select(whitelist[i + 1])
		turtle.transferTo(whitelist[1], eachSlot)
	end
end

while true do
	if scrapCount() > 9 then
		spreadScrap()
		turtle.craft()
		turtle.dropDown()
	end
	turtle.select(1)
	turtle.suck()
	sleep(2)
end