diff --git a/assets/opencomputers/recipes/default.recipes b/assets/opencomputers/recipes/default.recipes
index 52c34e373..11228a796 100644
--- a/assets/opencomputers/recipes/default.recipes
+++ b/assets/opencomputers/recipes/default.recipes
@@ -67,13 +67,13 @@ wlanCard {
 }
 
 craftingUpgrade {
-  input: [[ingotIron, pistonBase, ingotIron]
+  input: [[ingotIron, craftingPiston, ingotIron]
           ["oc:circuitBasic", workbench, "oc:circuitBasic"]
           [ingotIron, "oc:craftingCircuitBoardPrinted", ingotIron]]
 }
 generatorUpgrade {
   input: [[ingotIron, "", ingotIron]
-          ["oc:circuitBasic", pistonBase, "oc:circuitBasic"]
+          ["oc:circuitBasic", craftingPiston, "oc:circuitBasic"]
           ["oc:craftingCircuitBoardPrinted", ingotIron, "oc:craftingCircuitBoardPrinted"]]
 }
 navigationUpgrade {
@@ -83,12 +83,12 @@ navigationUpgrade {
 }
 signUpgrade {
   input: [[ingotIron, dyePowder, ingotIron]
-          ["oc:circuitAdvanced", stickWood, "oc:circuitAdvanced"]
+          ["oc:circuitBasic", stickWood, "oc:circuitBasic"]
           [ingotIron, pistonStickyBase, ingotIron]]
 }
 solarGeneratorUpgrade {
   input: [[glass, glass, glass]
-          ["oc:circuitAdvanced", "oc:craftingGenerator", "oc:circuitAdvanced"]]
+          ["oc:circuitElite", "oc:craftingGenerator", "oc:circuitElite"]]
 }
 
 nuggetIron {
@@ -101,7 +101,7 @@ cuttingWire {
 }
 acid {
   type: shapeless
-  input: [bucketWater, sugar, slimeball, spiderEye, bone, {item=dyePowder, subID=1}]
+  input: [bucketWater, sugar, slimeball, fermentedSpiderEye, bone, {item=dyePowder, subID=1}]
 }
 disk {
   input: [["", nuggetIron, ""]
diff --git a/assets/opencomputers/recipes/gregtech.recipes b/assets/opencomputers/recipes/gregtech.recipes
index be468025f..21d2531dc 100644
--- a/assets/opencomputers/recipes/gregtech.recipes
+++ b/assets/opencomputers/recipes/gregtech.recipes
@@ -9,7 +9,7 @@ analyzer {
 
 ram1 {
   type:assembly
-  input: ["oc:circuitBasic", "oc:craftingCircuitBoardPrinted"]
+  input: [{item="oc:item",subID=24}, {item="oc:item",subID=32}]
   number:[3,3]
   eu:32
   time=250
@@ -75,23 +75,22 @@ generatorUpgrade {
           ["oc:circuitAdvanced",craftingGenerator , "oc:circuitAdvanced"]
           [screwStainlessSteel, craftingToolScrewdriver, screwStainlessSteel]]
 }
-#todo
-#navigationUpgrade {
-#  input: [[ingotGold, compass, ingotGold]
-#          ["oc:circuitElite", {item=map, subID=32767}, "oc:circuitElite"]
-#          [ingotGold, potion, ingotGold]]
-#}
-#todo
-#signUpgrade {
-#  input: [[ingotIron, dyePowder, ingotIron]
-#          ["oc:circuitAdvanced", stickWood, "oc:circuitAdvanced"]
-#          [ingotIron, pistonStickyBase, ingotIron]]
-#}
-#todo
-#solarGeneratorUpgrade {
-#  input: [[glass, glass, glass]
-#          ["oc:circuitAdvanced", "oc:craftingGenerator", "oc:circuitAdvanced"]]
-#}
+navigationUpgrade {
+  input: [[craftingRawMachineTier02, compass, screwStainlessSteel]
+          ["oc:circuitElite", {item=map, subID=any}, "oc:circuitElite"]
+          [screwStainlessSteel, potion, craftingToolScrewdriver]]
+}
+signUpgrade {
+  input: [[screwAluminium, dyePowder, screwAluminium]
+          ["oc:circuitBasic", stickWood, "oc:circuitBasic"]
+          [screwAluminium, craftingToolScrewdriver, screwAluminium]]
+}
+
+solarGeneratorUpgrade {
+  input: [[screwTitanium, "", screwTitanium]
+          ["oc:circuitElite", {item=GT_Components,subID=7} , "oc:circuitElite"]
+          [screwTitanium, craftingToolScrewdriver, screwTitanium]]
+}
 
 
 cuttingWire {
@@ -111,7 +110,7 @@ disk {
 
 transistor {
 type:assembly
-  input: [redstone, plateIron]
+  input: [redstone,  {item="GT_Materials",subID=64}]
   number:[1,2]
   eu:16
   time=500
@@ -136,7 +135,7 @@ chip2 {
 }
 chip3 {
   type:assembly
-    input: [{item=Components,subID=1}, {item="oc:item",subID=23}]
+    input: [{item=GT_Components,subID=1}, {item="oc:item",subID=23}]
     number:[1,16]
     eu:25
     time=800
diff --git a/assets/opencomputers/recipes/user.recipes b/assets/opencomputers/recipes/user.recipes
index 79b5d4581..d8a9b1457 100644
--- a/assets/opencomputers/recipes/user.recipes
+++ b/assets/opencomputers/recipes/user.recipes
@@ -4,7 +4,6 @@
 # already known recipes).
 
 include file("default.recipes")
-#include file("buildcraft.recipes")
 #include file("gregtech.recipes")
 #include file("your_custom.recipes")
 
diff --git a/li/cil/oc/Recipes.scala b/li/cil/oc/Recipes.scala
index 0525456c7..4f87085c6 100644
--- a/li/cil/oc/Recipes.scala
+++ b/li/cil/oc/Recipes.scala
@@ -5,6 +5,7 @@ import cpw.mods.fml.common.Loader
 import cpw.mods.fml.common.registry.GameRegistry
 import java.io.{FileReader, File}
 import java.util.logging.Level
+import li.cil.oc.util.mods.GregTech
 import net.minecraft.block.Block
 import net.minecraft.item.crafting.FurnaceRecipes
 import net.minecraft.item.{ItemStack, Item}
@@ -135,6 +136,7 @@ object Recipes {
           case "shaped" => addShapedRecipe(output, recipe)
           case "shapeless" => addShapelessRecipe(output, recipe)
           case "furnace" => addFurnaceRecipe(output, recipe)
+          case "assembly" => addAssemblyRecipe(output, recipe)
           case other => OpenComputers.log.warning("Failed adding recipe for '" + name + "', you will not be able to craft this item! The error was: Invalid recipe type '" + other + "'.")
         }
       }
@@ -193,6 +195,46 @@ object Recipes {
     }
   }
 
+  private def addAssemblyRecipe(stack: ItemStack, recipe: Config) {
+    val input = recipe.getValue("input").unwrapped() match {
+      case list: java.util.List[Object] => list.map(parseIngredient)
+      case other => Seq(parseIngredient(other))
+    }
+    val number = recipe.getValue("number").unwrapped().asInstanceOf[java.util.List[Object]]
+    var input1: ItemStack = null
+    var input2: ItemStack = null
+    if (input.size < 1 || input.size > 2) {
+      throw new RecipeException("Invalid recipe length: " + input.size + ".")
+    }
+    if (number.size() != input.size) {
+      throw new RecipeException("Invalid number length, expected: " + input.size + " got: " + number.size + ".")
+    }
+
+    val eu = recipe.getValue("eu").unwrapped().asInstanceOf[Integer]
+    val duration = recipe.getValue("time").unwrapped().asInstanceOf[Integer]
+    val output = stack.copy()
+    output.stackSize = tryGetCount(recipe)
+    input(0) match {
+      case value: ItemStack =>
+        input1 = value
+        input1.stackSize = number(0).asInstanceOf[Integer]
+      case other => throw new RecipeException("Invalid recipe type expected ItemStack got: " + other + ".")
+    }
+
+    if (input.size == 2) {
+      input(1) match {
+        case value: ItemStack =>
+          input2 = value
+          input2.stackSize = number(1).asInstanceOf[Integer]
+        case other => throw new RecipeException("Invalid recipe type expected ItemStack got: " + other + ".")
+      }
+    }
+
+    if (input1 != null) {
+      GregTech.addAssemblerRecipe(input1, input2, output, duration, eu)
+    }
+  }
+
   private def addFurnaceRecipe(stack: ItemStack, recipe: Config) {
     val input = parseIngredient(recipe.getValue("input").unwrapped())
 
@@ -253,7 +295,7 @@ object Recipes {
           }
         }
       }
-    case other => throw new RecipeException("Invalid ingredient type (not a map or string): "+other)
+    case other => throw new RecipeException("Invalid ingredient type (not a map or string): " + other)
   }
 
   private def itemNameEquals(item: Item, name: String) =