diff --git a/src/java/mmm/tech/base/TBAlloyFurnaceBlock.java b/src/java/mmm/tech/base/TBAlloyFurnaceBlock.java
index 3df26f4..6171b8d 100644
--- a/src/java/mmm/tech/base/TBAlloyFurnaceBlock.java
+++ b/src/java/mmm/tech/base/TBAlloyFurnaceBlock.java
@@ -67,6 +67,7 @@ public class TBAlloyFurnaceBlock
 		this.lightOpacity = 0;
 		this.translucent = false;
 		this.fullBlock = false;
+		this.lightValue = active ? 13 : 0;
 		URegistry.setIdentifiers( this , "tech" , "base" , "alloy_furnace" , active ? "active" : "inactive" );
 	}
 
@@ -146,52 +147,69 @@ public class TBAlloyFurnaceBlock
 	public void randomDisplayTick( final IBlockState stateIn , final World worldIn , final BlockPos pos ,
 			final Random rand )
 	{
-		// XXX stolen from Blocks.FURNACE, will need adjustments (e.g. positions)
 		if ( this.active ) {
-			final EnumFacing enumfacing = stateIn.getValue( TBAlloyFurnaceBlock.FACING );
-			final double d0 = pos.getX( ) + 0.5D;
-			final double d1 = pos.getY( ) + rand.nextDouble( ) * 6.0D / 16.0D;
-			final double d2 = pos.getZ( ) + 0.5D;
-			final double d3 = 0.52D;
-			final double d4 = rand.nextDouble( ) * 0.6D - 0.3D;
-
-			if ( rand.nextDouble( ) < 0.1D ) {
-				worldIn.playSound( pos.getX( ) + 0.5D , pos.getY( ) , pos.getZ( ) + 0.5D ,
-						SoundEvents.BLOCK_FURNACE_FIRE_CRACKLE , SoundCategory.BLOCKS , 1.0F , 1.0F , false );
+			if ( rand.nextDouble( ) < .1 ) {
+				worldIn.playSound( pos.getX( ) + .5 , pos.getY( ) , pos.getZ( ) + .5 ,
+						SoundEvents.BLOCK_FURNACE_FIRE_CRACKLE , SoundCategory.BLOCKS , 1.f , 1.f , false );
 			}
 
-			switch ( enumfacing ) {
-				case WEST:
-					worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , d0 - d3 , d1 , d2 + d4 , 0.0D , 0.0D ,
-							0.0D , new int[ 0 ] );
-					worldIn.spawnParticle( EnumParticleTypes.FLAME , d0 - d3 , d1 , d2 + d4 , 0.0D , 0.0D , 0.0D ,
-							new int[ 0 ] );
-					break;
-				case EAST:
-					worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , d0 + d3 , d1 , d2 + d4 , 0.0D , 0.0D ,
-							0.0D , new int[ 0 ] );
-					worldIn.spawnParticle( EnumParticleTypes.FLAME , d0 + d3 , d1 , d2 + d4 , 0.0D , 0.0D , 0.0D ,
-							new int[ 0 ] );
-					break;
-				case NORTH:
-					worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , d0 + d4 , d1 , d2 - d3 , 0.0D , 0.0D ,
-							0.0D , new int[ 0 ] );
-					worldIn.spawnParticle( EnumParticleTypes.FLAME , d0 + d4 , d1 , d2 - d3 , 0.0D , 0.0D , 0.0D ,
-							new int[ 0 ] );
-					break;
-				case SOUTH:
-					worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , d0 + d4 , d1 , d2 + d3 , 0.0D , 0.0D ,
-							0.0D , new int[ 0 ] );
-					worldIn.spawnParticle( EnumParticleTypes.FLAME , d0 + d4 , d1 , d2 + d3 , 0.0D , 0.0D , 0.0D ,
-							new int[ 0 ] );
-					break;
-				default:
-					break;
+			if ( rand.nextDouble( ) < .5 ) {
+				spawnFrontParticles( stateIn , worldIn , pos , rand );
+			}
+
+			for ( int i = 0 ; i < 4 ; i++ ) {
+				this.spawnTopParticles( stateIn , worldIn , pos , rand );
 			}
 		}
 	}
 
 
+	private void spawnTopParticles( IBlockState stateIn , World worldIn , BlockPos pos , Random rand )
+	{
+		final double spawnX = pos.getX( ) + .5 + ( rand.nextDouble( ) - .5 ) * 4.5 / 16.;
+		final double spawnY = pos.getY( ) + ( 15. + 3. * rand.nextDouble( ) ) / 16.;
+		final double spawnZ = pos.getZ( ) + .5 + ( rand.nextDouble( ) - .5 ) * 4.5 / 16.;
+		worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , spawnX , spawnY , spawnZ , 0. , 0. , 0. );
+		worldIn.spawnParticle( EnumParticleTypes.FLAME , spawnX , spawnY , spawnZ , 0. , 0. , 0. );
+	}
+
+
+	private void spawnFrontParticles( final IBlockState stateIn , final World worldIn , final BlockPos pos ,
+			final Random rand )
+	{
+		final double cx = pos.getX( ) + .5;
+		final double cz = pos.getZ( ) + .5;
+		final double frontOffset = .52;
+		final double spawnY = pos.getY( ) + ( 4. + rand.nextDouble( ) * 4. ) / 16.;
+		final double pSide = ( rand.nextDouble( ) - .5 ) * 10. / 16.;
+
+		double spawnX , spawnZ;
+		switch ( stateIn.getValue( TBAlloyFurnaceBlock.FACING ) ) {
+			case WEST:
+				spawnX = cx - frontOffset;
+				spawnZ = cz + pSide;
+				break;
+			case EAST:
+				spawnX = cx + frontOffset;
+				spawnZ = cz + pSide;
+				break;
+			case NORTH:
+				spawnX = cx + pSide;
+				spawnZ = cz - frontOffset;
+				break;
+			case SOUTH:
+				spawnX = cx + pSide;
+				spawnZ = cz + frontOffset;
+				break;
+			default:
+				return;
+		}
+
+		worldIn.spawnParticle( EnumParticleTypes.SMOKE_NORMAL , spawnX , spawnY , spawnZ , 0. , 0. , 0. );
+		worldIn.spawnParticle( EnumParticleTypes.FLAME , spawnX , spawnY , spawnZ , 0. , 0. , 0. );
+	}
+
+
 	@Override
 	public AxisAlignedBB getBoundingBox( final IBlockState state , final IBlockAccess source , final BlockPos pos )
 	{