Hello Dan
The nose cones are pre-colored resin FW fiberglass purchased from Rocketry warehouse (made by performance rocketry). They were off the shelf 54 mm but did some custom work on them, the 54 mm have an OD of around 2.3 inches, I machined the bottom of the nose cone OD down to 2.125 inches to fit my rockets and also made a custom NC coupler to fit my 2.0 inch airframe tube ID. Also the stock aluminum tips were replaced, I don’t like the stock solid heavy with single center bolt designed tips, I was having some issues with them to get the tips to line up flush with the top of the NC, one little twist and they seem to go off center. My solution was I machined my own and re-designed to locate off the center of the top opening of the NC, then used a new high temp version of Rocketpoxy I recently developed ( Tg of 250+ Deg F.) to glue them on the inside top of the NC, worked great, now perfectly flush and don’t have to ever worry about the bolt loosen and twisting off center, Also saved a lot of weight by eliminating the bolt and washer and also machined them hollow inside leaving about a 1/16 inch wall for additional weight savings. (see cut away photo). I think I' going to do all my FW nose cone tips this way from now on.
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