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This is a photo of the paper cone with the second layer of 4-0unce fiberglass applied to the external surface. What you don't see is the layer of 6-ounch fiberglass on the inside surface. I used 4-ounce glass externally so I would be able to wrap it around the tip. You can see that it wasn't real easy even the lighter cloth.
About 5 inches of the tip is filled with polyester resin for solid reinforcement.
Click on the photo for a larger image.
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