I would create the latices based on a distance rendered image of the ship itself. 1. Pick a view that looks squarley at the space that that you want fuel line to run. 2. Do a distance render. 3. Import it into Photoshop (or whatever you have) 4. Select the area that you want the fuel line to run through. 5. Feather your selection a bit. 6. Lighten the selected area until it sticks out from the ship. 7. Invert your selection and delete the rest of the ship. 8. You should now have a circular line that hugs the body of the ship. You may have to play with the settings in steps 5 and 6 until you get exactly the look that you want. Hope this helps. -Locke