--Automatic crafting system. Used for crafting ore blocks.

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

local function craft(slot)
	local b = turtle.getItemCount(slot)
	local reps = (b - math.fmod(b,9)) / 9    --Figure out amount of blocks to create
	if slot ~= 16 then    --Make sure the crafting materials are in slot 16
		turtle.select(16)
		turtle.dropDown()
		turtle.select(slot)
		turtle.transferTo(16)
	end
	for i = 1,16 do    --Set up the crafting grid
		turtle.select(i)
		turtle.dropDown()    --Clear the slots
		if i == tableSlots[a] then			
			turtle.select(16)
			turtle.transferTo(tableSlots[a], reps)			--Transfer materials to the crafting slots
			a = a + 1
		end
	end
	turtle.select(1)
	a = 1
	if turtle.craft() then    --If it crafted, move to a chest in front
		turtle.drop()
	else					  --If not, empty grid
		for i = 1,9 do
			turtle.select(tableSlots[i])
			turtle.drop()
		end
	end
	for i = 1,16 do
		turtle.suckDown()
	end
end

while true do
	turtle.suckDown()
	for j = 1,16 do
		if turtle.getItemCount(j) >= 9 then
			craft(j)
			break
		end
	end
	sleep(5)
end