diff --git a/assets/mods/basegame/crafting/blocks.json b/assets/mods/basegame/crafting/blocks.json
index c99cada07..5480a0db0 100644
--- a/assets/mods/basegame/crafting/blocks.json
+++ b/assets/mods/basegame/crafting/blocks.json
@@ -2,31 +2,31 @@
   "basegame:160": {
     "workbench": "",
     "ingredients": [
-      [4, 2, "$ROCK"]
+      [2, 1, "$ROCK"]
     ]
   },
   "basegame:161": {
     "workbench": "",
     "ingredients": [
-      [4, 2, "basegame:48"]
+      [2, 1, "basegame:48"]
     ]
   },
   "basegame:162": {
     "workbench": "",
     "ingredients": [
-      [4, 2, "basegame:49"]
+      [2, 1, "basegame:49"]
     ]
   },
   "basegame:163": {
     "workbench": "",
     "ingredients": [
-      [4, 2, "basegame:50"]
+      [2, 1, "basegame:50"]
     ]
   },
   "basegame:164": {
     "workbench": "",
     "ingredients": [
-      [4, 2, "basegame:51"]
+      [2, 1, "basegame:51"]
     ]
   }
 }
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/itemproperties/CraftingCodex.kt b/src/net/torvald/terrarum/itemproperties/CraftingCodex.kt
index 51b12366a..fe45e8ee8 100644
--- a/src/net/torvald/terrarum/itemproperties/CraftingCodex.kt
+++ b/src/net/torvald/terrarum/itemproperties/CraftingCodex.kt
@@ -12,6 +12,16 @@ class CraftingCodex {
 
     @Transient internal val props = HashMap<ItemID, ArrayList<CraftingRecipe>>() // the key ItemID and value.product must be equal
 
+    fun addRecipe(recipe: CraftingRecipe) {
+        val product = recipe.product
+        if (props.containsKey(product)) {
+            props[product]?.add(recipe)
+        }
+        else {
+            props[product] = arrayListOf(recipe)
+        }
+    }
+
     fun addFromJson(json: JsonValue, moduleName: String, fileName:String) {
 
         if (moduleName.filter { it.code in 33..127 } .length < 5)
diff --git a/src/net/torvald/terrarum/modulebasegame/EntryPoint.kt b/src/net/torvald/terrarum/modulebasegame/EntryPoint.kt
index 7a3eebe2a..6bafc6e54 100644
--- a/src/net/torvald/terrarum/modulebasegame/EntryPoint.kt
+++ b/src/net/torvald/terrarum/modulebasegame/EntryPoint.kt
@@ -6,6 +6,7 @@ import net.torvald.terrarum.App.printdbg
 import net.torvald.terrarum.blockproperties.BlockProp
 import net.torvald.terrarum.gameactors.ActorWithBody
 import net.torvald.terrarum.gameitems.GameItem
+import net.torvald.terrarum.itemproperties.CraftingCodex
 import net.torvald.terrarum.modulebasegame.gameitems.BlockBase
 import net.torvald.terrarum.modulebasegame.imagefont.WatchFont
 import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
@@ -42,7 +43,7 @@ class EntryPoint : ModuleEntryPoint() {
         ModMgr.GameCraftingRecipeLoader.invoke(moduleName)
 
         println("Crafting Recipes: ")
-        Terrarum.craftingCodex.props.forEach { item, recipes ->
+        CraftingRecipeCodex.props.forEach { item, recipes ->
             println("$item ->")
             recipes.forEach {
                 print("    ")
@@ -71,6 +72,19 @@ class EntryPoint : ModuleEntryPoint() {
             }
         }
 
+        // crafting recipes: tile -> 2x wall
+        BlockCodex.getAll().filter { it.isWallable && it.isSolid && !it.isActorBlock }.forEach { tile ->
+            CraftingRecipeCodex.addRecipe(CraftingCodex.CraftingRecipe(
+                "",
+                arrayOf(CraftingCodex.CraftingIngredients(
+                    tile.id, CraftingCodex.CraftingItemKeyMode.VERBATIM, 1
+                )),
+                2,
+                "wall@"+tile.id,
+                moduleName
+            ))
+        }
+
         println("\n[Basegame.EntryPoint] Welcome back!")
     }