how do you get a cylinder unstuck from a barrel connector

- barrel connectors
  small visual part that pops up when you connect it to a fluid duct
  slightly downscaled the hazard diamond to make space for it

src/main/java/com/hbm/main/ResourceManager.java

@@ -863,6 +863,12 @@ public class ResourceManager {
 	//Pipes
 	public static final ResourceLocation pipe_anchor_tex = new ResourceLocation(RefStrings.MODID, "textures/models/network/pipe_anchor.png");
 	public static final ResourceLocation fluid_pump_tex = new ResourceLocation(RefStrings.MODID, "textures/models/network/fluid_diode.png");
+	
+	//Barrels
+	public static ResourceLocation barrel_plastic_tex  = new ResourceLocation("hbm:textures/blocks/barrel_plastic.png");
+	public static ResourceLocation barrel_steel_tex    = new ResourceLocation("hbm:textures/blocks/barrel_steel.png");
+	public static ResourceLocation barrel_tcalloy_tex  = new ResourceLocation("hbm:textures/blocks/barrel_tcalloy.png");
+	public static ResourceLocation barrel_antimatter_tex = new ResourceLocation("hbm:textures/blocks/barrel_antimatter.png");
 
 	//Radiolysis
 	public static final ResourceLocation radiolysis_tex = new ResourceLocation(RefStrings.MODID, "textures/models/radiolysis.png");

src/main/java/com/hbm/render/block/RenderBarrel.java

@@ -30,7 +30,7 @@ public class RenderBarrel implements ISimpleBlockRenderingHandler {
 
 		GL11.glTranslated(0, -0.5, 0);
 		tessellator.startDrawingQuads();
-		ObjUtil.renderWithIcon((HFRWavefrontObject) ResourceManager.barrel, iicon, tessellator, 0, false);
+		ObjUtil.renderPartWithIcon((HFRWavefrontObject) ResourceManager.barrel, "Barrel", iicon, tessellator, 0, false);
 		tessellator.draw();
 
 		GL11.glPopMatrix();
@@ -50,7 +50,7 @@ public class RenderBarrel implements ISimpleBlockRenderingHandler {
 		}
 
 		tessellator.addTranslation(x + 0.5F, y, z + 0.5F);
-		ObjUtil.renderWithIcon((HFRWavefrontObject) ResourceManager.barrel, iicon, tessellator, 0, true);
+		ObjUtil.renderPartWithIcon((HFRWavefrontObject) ResourceManager.barrel, "Barrel", iicon, tessellator, 0, true);
 		tessellator.addTranslation(-x - 0.5F, -y, -z - 0.5F);
 
 		return true;

src/main/java/com/hbm/render/tileentity/RenderFluidBarrel.java

@@ -2,10 +2,13 @@ package com.hbm.render.tileentity;
 
 import org.lwjgl.opengl.GL11;
 
+import com.hbm.blocks.ModBlocks;
 import com.hbm.inventory.fluid.FluidType;
 import com.hbm.inventory.fluid.Fluids;
 import com.hbm.render.util.DiamondPronter;
 import com.hbm.render.util.EnumSymbol;
+import com.hbm.lib.Library;
+import com.hbm.main.ResourceManager;
 import com.hbm.tileentity.machine.storage.TileEntityBarrel;
 
 import net.minecraft.client.renderer.RenderHelper;
@@ -21,6 +24,7 @@ public class RenderFluidBarrel extends TileEntitySpecialRenderer {
 		GL11.glTranslated(x + 0.5, y + 0.5, z + 0.5);
 		GL11.glEnable(GL11.GL_LIGHTING);
 		
+		
 		if(te instanceof TileEntityBarrel) {
 			
 			TileEntityBarrel barrel = (TileEntityBarrel)te;
@@ -28,7 +32,6 @@ public class RenderFluidBarrel extends TileEntitySpecialRenderer {
 			
 			if(type != Fluids.NONE) {
 				
-				RenderHelper.disableStandardItemLighting();
 				GL11.glPushMatrix();
 				
 				int poison = type.poison;
@@ -36,16 +39,63 @@ public class RenderFluidBarrel extends TileEntitySpecialRenderer {
 				int reactivity = type.reactivity;
 				EnumSymbol symbol = type.symbol;
 				
+		        int cx = te.xCoord;
+		        int cy = te.yCoord;
+		        int cz = te.zCoord;
+		        
+		        if(te.getBlockType() == ModBlocks.barrel_plastic)
+		            bindTexture(ResourceManager.barrel_plastic_tex);
+		        else if(te.getBlockType() == ModBlocks.barrel_steel)
+		            bindTexture(ResourceManager.barrel_steel_tex);
+		        else if(te.getBlockType() == ModBlocks.barrel_tcalloy)
+		            bindTexture(ResourceManager.barrel_tcalloy_tex);
+		        else if(te.getBlockType() == ModBlocks.barrel_antimatter)
+		            bindTexture(ResourceManager.barrel_antimatter_tex);
+
+                if(Library.canConnectFluid(te.getWorldObj(), cx + 1, cy, cz, Library.POS_X, type)) {
+                    GL11.glTranslatef(0.0F, -0.5F, 0.0F);
+                    GL11.glRotatef(0F, 0F, 0F, 0F);
+                    ResourceManager.barrel.renderPart("Connector");
+                    GL11.glTranslatef(0.0F, 0.5F, 0.0F);
+                }
+		        
+                if(Library.canConnectFluid(te.getWorldObj(), cx - 1, cy, cz, Library.NEG_X, type)) {
+                    GL11.glRotatef(180, 0F, 1F, 0F);
+                    GL11.glTranslatef(0.0F, -0.5F, 0.0F);
+                    ResourceManager.barrel.renderPart("Connector");
+                    GL11.glTranslatef(0.0F, 0.5F, 0.0F);
+                    GL11.glRotatef(-180, 0F, 1F, 0F);
+                }
+
+                if(Library.canConnectFluid(te.getWorldObj(), cx, cy, cz - 1, Library.NEG_Z, type)) {
+                    GL11.glRotatef(90, 0F, 1F, 0F);
+                    GL11.glTranslatef(0.0F, -0.5F, 0.0F);
+                    ResourceManager.barrel.renderPart("Connector");
+                    GL11.glTranslatef(0.0F, 0.5F, 0.0F);
+                    GL11.glRotatef(-90, 0F, 1F, 0F);
+                }
+
+                if(Library.canConnectFluid(te.getWorldObj(), cx, cy, cz + 1, Library.POS_Z, type)) {
+                    GL11.glRotatef(-90, 0F, 1F, 0F);
+                    GL11.glTranslatef(0.0F, -0.5F, 0.0F);
+                    ResourceManager.barrel.renderPart("Connector");
+                    GL11.glTranslatef(0.0F, 0.5F, 0.0F);
+                    GL11.glRotatef(90, 0F, 1F, 0F);
+                }
+				
+				RenderHelper.disableStandardItemLighting();
+				
 				for(int j = 0; j < 4; j++) {
 					
 					GL11.glPushMatrix();
-					GL11.glTranslated(0.4, 0.25, -0.15);
+					GL11.glTranslated(0.4, 0.30, -0.24);
-					GL11.glScalef(1.0F, 0.35F, 0.35F);
+					GL11.glScalef(1.0F, 0.25F, 0.25F);
 					DiamondPronter.pront(poison, flammability, reactivity, symbol);
 					GL11.glPopMatrix();
 					GL11.glRotatef(90, 0, 1, 0);
 				}
 				
+				
 				GL11.glPopMatrix();
 				RenderHelper.enableStandardItemLighting();
 			}

src/main/resources/assets/hbm/models/blocks/barrel.obj

@@ -1,13 +1,58 @@
-# Blender v2.76 (sub 0) OBJ File: 'barrel.blend'
+# Blender v2.82 (sub 7) OBJ File: 'barrel.blend'
 # www.blender.org
-o Cube_Cube.001
+mtllib barrel.mtl
-v -0.375000 0.000000 0.375000
+o Connector
-v -0.375000 1.000000 0.375000
+v 0.500000 0.687500 0.187500
-v -0.375000 0.000000 -0.375000
+v 0.500000 0.312500 -0.187500
-v -0.375000 1.000000 -0.375000
+v 0.500000 0.687500 -0.187500
-v 0.375000 0.000000 0.375000
+v 0.375000 0.312500 -0.187500
+v 0.375000 0.687500 0.187500
+v 0.375000 0.687500 -0.187500
+v 0.375000 0.312500 0.187500
+v 0.500000 0.312500 0.187500
+vt 0.145833 0.270833
+vt 0.020833 0.395833
+vt 0.020833 0.270833
+vt 0.020833 0.375000
+vt 0.000000 0.250000
+vt 0.020833 0.250000
+vt 0.166667 0.395833
+vt 0.041667 0.416667
+vt 0.041667 0.395833
+vt 0.145833 0.291667
+vt 0.166667 0.416667
+vt 0.145833 0.416667
+vt 0.000000 0.270833
+vt 0.125000 0.250000
+vt 0.125000 0.270833
+vt 0.145833 0.395833
+vt -0.000000 0.375000
+vt 0.166667 0.291667
+vn 1.0000 0.0000 0.0000
+vn 0.0000 0.0000 1.0000
+vn 0.0000 1.0000 -0.0000
+vn 0.0000 -0.0000 -1.0000
+vn 0.0000 -1.0000 0.0000
+usemtl Default_OBJ
+s 1
+f 1/1/1 2/2/1 3/3/1
+f 1/4/2 7/5/2 8/6/2
+f 3/7/3 5/8/3 1/9/3
+f 2/10/4 6/11/4 3/12/4
+f 8/13/5 4/14/5 2/15/5
+f 1/1/1 8/16/1 2/2/1
+f 1/4/2 5/17/2 7/5/2
+f 3/7/3 6/11/3 5/8/3
+f 2/10/4 4/18/4 6/11/4
+f 8/13/5 7/5/5 4/14/5
+o Barrel
 v 0.375000 1.000000 0.375000
-v 0.375000 0.000000 -0.375000
+v 0.375000 0.000000 0.375000
+v 0.375000 -0.000000 -0.375000
+v -0.375000 1.000000 0.375000
+v -0.375000 0.000000 0.375000
+v -0.375000 1.000000 -0.375000
+v -0.375000 -0.000000 -0.375000
 v 0.375000 1.000000 -0.375000
 vt 0.000000 0.750000
 vt 0.000000 0.416667
@@ -18,26 +63,32 @@ vt 1.000000 0.416667
 vt 0.500000 0.750000
 vt 0.500000 0.416667
 vt 0.250000 0.750000
+vt 0.750000 0.750000
 vt 0.750000 1.000000
 vt 0.500000 1.000000
+vt 0.500000 0.750000
+vt 0.500000 1.000000
 vt 0.250000 1.000000
 vt 1.000000 0.750000
-vn -1.000000 0.000000 0.000000
+vt 0.500000 0.750000
-vn 0.000000 0.000000 -1.000000
+vt 0.250000 0.750000
-vn 1.000000 0.000000 0.000000
+vn 1.0000 0.0000 0.0000
-vn 0.000000 0.000000 1.000000
+vn 0.0000 0.0000 1.0000
-vn 0.000000 -1.000000 0.000000
+vn -1.0000 0.0000 0.0000
-vn 0.000000 1.000000 0.000000
+vn 0.0000 -0.0000 -1.0000
-s off
+vn 0.0000 -1.0000 0.0000
-f 4/1/1 3/2/1 1/3/1
+vn 0.0000 1.0000 -0.0000
-f 8/4/2 7/5/2 3/6/2
+usemtl Default_OBJ
-f 6/7/3 5/8/3 7/5/3
+s 1
-f 2/9/4 1/3/4 5/8/4
+f 9/19/6 10/20/6 11/21/6
-f 3/4/5 7/10/5 5/11/5
+f 12/22/7 13/23/7 10/24/7
-f 8/7/6 4/11/6 2/12/6
+f 14/25/8 15/26/8 13/23/8
-f 2/9/1 4/1/1 1/3/1
+f 16/27/9 11/21/9 15/26/9
-f 4/13/2 8/4/2 3/6/2
+f 10/28/10 13/29/10 15/30/10
-f 8/4/3 6/7/3 7/5/3
+f 12/31/11 9/32/11 16/33/11
-f 6/7/4 2/9/4 5/8/4
+f 16/27/6 9/19/6 11/21/6
-f 1/7/5 3/4/5 5/11/5
+f 9/34/7 12/22/7 10/24/7
-f 6/9/6 8/7/6 2/12/6
+f 12/22/8 14/25/8 13/23/8
+f 14/25/9 16/27/9 15/26/9
+f 11/35/10 10/28/10 15/30/10
+f 14/36/11 12/31/11 16/33/11