diff --git a/computer/13/machines.lua b/computer/13/machines.lua
index 0bbe08b..902d900 100644
--- a/computer/13/machines.lua
+++ b/computer/13/machines.lua
@@ -122,6 +122,15 @@ function compact(extra_items)
 	printError("unimplemented :3")
 	sfx.fail()
 end
+function make_water(_,_,yield)
+	selectFluidDevice("water_source")
+	connectTanks({"water"})
+	pumpToTanks(true)
+	print("waiting 30s for water tanks to fill")
+	sleep(30)
+	pumpToTanks(false)
+	fluidInvAdd("water", yield)
+end
 function alloy(parts, product)
 	for _, item in pairs(parts) do
 		if not isFluid[item.name] then
@@ -222,4 +231,5 @@ return {
 	melt = melt,
 	saw = saw,
 	spout = spout,
+	make_water = make_water,
 }
\ No newline at end of file
diff --git a/computer/13/recipes.txt b/computer/13/recipes.txt
index 69af36e..983b92c 100644
--- a/computer/13/recipes.txt
+++ b/computer/13/recipes.txt
@@ -2,6 +2,7 @@ belt_connector
 base dried_kelp
 intermediate dried_kelp
 repeat 3
+yield 6
 steps:
 deploy rubber
 press
@@ -9,12 +10,13 @@ deploy dried_kelp
 press
 
 dried_kelp
+yield 8
 steps:
 furnace kelp:8
 
 rubber
 steps:
-mix sap:2
+mix sap
 
 polished_rose_quartz
 base rose_quartz
@@ -35,6 +37,7 @@ steps:
 press
 
 glass
+yield 8
 steps:
 furnace sand:8
 
@@ -43,6 +46,7 @@ steps:
 mill gravel:2
 
 fluid_pipe
+yield 2
 steps:
 craft nil copper_sheet nil rubber rubber rubber nil copper_sheet
 
@@ -52,6 +56,7 @@ steps:
 press
 
 andesite_alloy
+yield 9
 steps:
 craft andesite_alloy_block
 
@@ -60,10 +65,12 @@ steps:
 craft birch_planks birch_planks birch_planks birch_planks redstone birch_planks birch_planks birch_planks birch_planks
 
 birch_planks
+yield 4
 steps:
 craft birch_log
 
 redstone
+yield 9
 steps:
 craft redstone_block
 
@@ -86,6 +93,7 @@ steps:
 deploy_tool flint_knife
 
 stick
+yield 4
 steps:
 craft birch_planks nil nil birch_planks
 
@@ -95,10 +103,12 @@ steps:
 press
 
 iron_ingot
+yield 9
 steps:
 craft iron_block
 
 cogwheel
+yield 3
 steps:
 craft andesite_alloy bronze_sheet
 
@@ -126,6 +136,7 @@ steps:
 mill
 
 black_concrete_powder
+yield 8
 steps:
 craft black_dye sand sand sand sand gravel gravel gravel gravel
 
@@ -158,6 +169,7 @@ steps:
 craft birch_planks birch_slab birch_planks birch_planks nil birch_planks birch_planks birch_slab birch_planks
 
 birch_slab
+yield 6
 steps:
 craft birch_planks birch_planks birch_planks
 
@@ -166,6 +178,7 @@ steps:
 craft andesite_alloy andesite_alloy andesite_alloy andesite_alloy polished_rose_quartz andesite_alloy andesite_alloy glass_pane andesite_alloy
 
 glass_pane
+yield 16
 steps:
 craft glass glass glass glass glass glass
 
@@ -191,6 +204,7 @@ steps:
 craft charcoal nil nil stick
 
 kelp
+yield 10
 steps:
 mix water kelp bone_meal:2
 
@@ -252,3 +266,8 @@ yield 50
 base rotten_flesh
 steps:
 melt
+
+water
+yield 20000
+steps:
+make_water
diff --git a/computer/13/test.lua b/computer/13/test.lua
deleted file mode 100644
index 3860de3..0000000
--- a/computer/13/test.lua
+++ /dev/null
@@ -1,12 +0,0 @@
-function bar()
-    error("mmm", 4)
-end
-
-function foo()
-    bar()
-end
-
-while true do
-foo()
-   -- error("aaaaa")
-end