diff --git a/src/main/java/openblocks/common/tileentity/TileEntityBuilderGuide.java b/src/main/java/openblocks/common/tileentity/TileEntityBuilderGuide.java
index 64ec409e4..699824a0d 100644
--- a/src/main/java/openblocks/common/tileentity/TileEntityBuilderGuide.java
+++ b/src/main/java/openblocks/common/tileentity/TileEntityBuilderGuide.java
@@ -7,6 +7,9 @@
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
 import net.minecraft.item.ItemStack;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.common.util.BlockSnapshot;
+import net.minecraftforge.event.world.BlockEvent;
 import openblocks.rpc.IGuideAnimationTrigger;
 import openmods.shapes.IShapeable;
 import openmods.utils.BlockNotifyFlags;
@@ -15,97 +18,102 @@
 
 public class TileEntityBuilderGuide extends TileEntityGuide implements IGuideAnimationTrigger {
 
-	private static final Random RANDOM = new Random();
-
-	@Override
-	public boolean shouldRenderInPass(int pass) {
-		return pass == 0 || (pass == 1 && shouldRender());
-	}
-
-	private int ticks;
-
-	@Override
-	public boolean onItemUse(EntityPlayerMP player, ItemStack heldStack, int side, float hitX, float hitY, float hitZ) {
-		if (active.get()) {
-			final Item heldItem = heldStack.getItem();
-			if (heldItem instanceof ItemBlock) {
-				final ItemBlock itemBlock = (ItemBlock)heldItem;
-				final Block block = itemBlock.field_150939_a;
-				final int blockMeta = itemBlock.getMetadata(heldStack.getItemDamage());
-
-				if (player.capabilities.isCreativeMode && isInFillMode()) {
-					creativeReplaceBlocks(block, blockMeta);
-					return true;
-				} else {
-					return survivalPlaceBlocks(player, heldStack, block, blockMeta, side, hitX, hitY, hitZ);
-				}
-			}
-		}
-
-		return super.onItemUse(player, heldStack, side, hitX, hitY, hitZ);
-	}
-
-	@Override
-	public void updateEntity() {
-		super.updateEntity();
-
-		if (worldObj.isRemote) ticks++;
-	}
-
-	private void creativeReplaceBlocks(Block block, int blockMeta) {
-		for (Coord coord : getShapeSafe().getCoords())
-			worldObj.setBlock(xCoord + coord.x, yCoord + coord.y, zCoord + coord.z, block, blockMeta, BlockNotifyFlags.ALL);
-	}
-
-	@Override
-	protected boolean canAddCoord(int x, int y, int z) {
-		// create safe space around builder, so it's always accesible
-		return Math.abs(x) > 1 || Math.abs(y) > 1 || Math.abs(z) > 1;
-	}
-
-	private boolean survivalPlaceBlocks(EntityPlayerMP player, ItemStack heldItem, Block block, int blockMeta, int side, float hitX, float hitY, float hitZ) {
-		for (Coord relCoord : getShapeSafe().getCoords()) {
-			final int absX = relCoord.x + xCoord;
-			final int absY = relCoord.y + yCoord;
-			final int absZ = relCoord.z + zCoord;
-			if (worldObj.blockExists(absX, absY, absZ) && worldObj.isAirBlock(absX, absY, absZ)) {
-				boolean hasPlaced = player.theItemInWorldManager.activateBlockOrUseItem(player, worldObj, heldItem, absX, absY, absZ, side, hitX, hitY, hitZ);
-				if (hasPlaced) {
-					final String particle = "blockdust_" + Block.getIdFromBlock(block) + "_" + blockMeta;
-					createServerRpcProxy(IGuideAnimationTrigger.class).trigger(absX, absY, absZ, particle);
-					return true;
-				}
-			}
-
-		}
-
-		return false;
-	}
-
-	private boolean isInFillMode() {
-		return worldObj.getBlock(xCoord, yCoord + 1, zCoord) == Blocks.obsidian;
-	}
-
-	public float getTicks() {
-		return ticks;
-	}
-
-	@Override
-	public void trigger(int x, int y, int z, final String particle) {
-		GeometryUtils.line3D(xCoord, yCoord, zCoord, x, y, z, new IShapeable() {
-			@Override
-			public void setBlock(int x, int y, int z) {
-				final double dx = x + 0.5;
-				final double dy = y + 0.5;
-				final double dz = z + 0.5;
-				for (int i = 0; i < 5; i++) {
-					double px = dx + 0.3 * RANDOM.nextFloat();
-					double py = dy + 0.3 * RANDOM.nextFloat();
-					double pz = dz + 0.3 * RANDOM.nextFloat();
-					worldObj.spawnParticle("portal", px, py, pz, 0, 0, 0);
-					worldObj.spawnParticle(particle, px, py, pz, 0, 0, 0);
-				}
-			}
-		});
-	}
+    private static final Random RANDOM = new Random();
+
+    @Override
+    public boolean shouldRenderInPass(int pass) {
+        return pass == 0 || (pass == 1 && shouldRender());
+    }
+
+    private int ticks;
+
+    @Override
+    public boolean onItemUse(EntityPlayerMP player, ItemStack heldStack, int side, float hitX, float hitY, float hitZ) {
+        if (active.get()) {
+            final Item heldItem = heldStack.getItem();
+            if (heldItem instanceof ItemBlock) {
+                final ItemBlock itemBlock = (ItemBlock)heldItem;
+                final Block block = itemBlock.field_150939_a;
+                final int blockMeta = itemBlock.getMetadata(heldStack.getItemDamage());
+
+                if (player.capabilities.isCreativeMode && isInFillMode()) {
+                    creativeReplaceBlocks(block, blockMeta);
+                    return true;
+                } else {
+                    return survivalPlaceBlocks(itemBlock, player, heldStack, block, blockMeta, side, hitX, hitY, hitZ);
+                }
+            }
+        }
+
+        return super.onItemUse(player, heldStack, side, hitX, hitY, hitZ);
+    }
+
+    @Override
+    public void updateEntity() {
+        super.updateEntity();
+
+        if (worldObj.isRemote) ticks++;
+    }
+
+    private void creativeReplaceBlocks(Block block, int blockMeta) {
+        for (Coord coord : getShapeSafe().getCoords())
+            worldObj.setBlock(xCoord + coord.x, yCoord + coord.y, zCoord + coord.z, block, blockMeta, BlockNotifyFlags.ALL);
+    }
+
+    @Override
+    protected boolean canAddCoord(int x, int y, int z) {
+        // create safe space around builder, so it's always accesible
+        return Math.abs(x) > 1 || Math.abs(y) > 1 || Math.abs(z) > 1;
+    }
+
+    private boolean survivalPlaceBlocks(ItemBlock itemBlock, EntityPlayerMP player, ItemStack heldItem, Block block, int blockMeta, int side, float hitX, float hitY, float hitZ) {
+        for (Coord relCoord : getShapeSafe().getCoords()) {
+            final int absX = relCoord.x + xCoord;
+            final int absY = relCoord.y + yCoord;
+            final int absZ = relCoord.z + zCoord;
+            if (worldObj.blockExists(absX, absY, absZ) && worldObj.isAirBlock(absX, absY, absZ)) {
+                BlockSnapshot snapshot = BlockSnapshot.getBlockSnapshot(worldObj, absX, absY, absZ);
+                BlockEvent.PlaceEvent event = new BlockEvent.PlaceEvent(snapshot, worldObj.getBlock(absX, absY, absZ), player);
+                MinecraftForge.EVENT_BUS.post(event);
+                if (!event.isCanceled()) {
+                    itemBlock.placeBlockAt(heldItem, player, worldObj, absX, absY, absZ, side, hitX, hitY, hitZ, blockMeta);
+                    final String particle = "blockdust_" + Block.getIdFromBlock(block) + "_" + blockMeta;
+                    createServerRpcProxy(IGuideAnimationTrigger.class).trigger(absX, absY, absZ, particle);
+                    --heldItem.stackSize;
+                    return true;
+                } else {
+                    snapshot.restore();
+                }
+            }
+        }
+
+        return false;
+    }
+
+    private boolean isInFillMode() {
+        return worldObj.getBlock(xCoord, yCoord + 1, zCoord) == Blocks.obsidian;
+    }
+
+    public float getTicks() {
+        return ticks;
+    }
+
+    @Override
+    public void trigger(int x, int y, int z, final String particle) {
+        GeometryUtils.line3D(xCoord, yCoord, zCoord, x, y, z, new IShapeable() {
+            @Override
+            public void setBlock(int x, int y, int z) {
+                final double dx = x + 0.5;
+                final double dy = y + 0.5;
+                final double dz = z + 0.5;
+                for (int i = 0; i < 5; i++) {
+                    double px = dx + 0.3 * RANDOM.nextFloat();
+                    double py = dy + 0.3 * RANDOM.nextFloat();
+                    double pz = dz + 0.3 * RANDOM.nextFloat();
+                    worldObj.spawnParticle("portal", px, py, pz, 0, 0, 0);
+                    worldObj.spawnParticle(particle, px, py, pz, 0, 0, 0);
+                }
+            }
+        });
+    }
 }