This is a 3D model of the Estes BNC-50J nose cone (Part Number 070256) and is designed to fit Estes BT-50 airframe tubing. You can download it from Thingiverse for free and print it on your 3D printer.

There are a total of 12 files
1 - Nose cone original.
1 - Nose cone without shoulder.
2 - End cap to fit the original with a 1/8" (3.175mm) hole and without the hole.
4 - Same as the above, but upscaled to fit Estes BT-60 airframe tubing. End cap has 5.0mm hole.
4 - Same as above, but upscaled to fit Estes BT-80 airframe tubing. End cap has 7.0mm hole.

Estes kits that use this nose cone:

Kit# Kit Name
K-33 Trident
K-40 Midget
0867 Airborne Surveillance Missile
0877 Meanie
1233 Trident
1273 Andromeda
1297 Solar Sailer
1940 Marte Mk. 2
2033 Trident II
2044 Solar Sailer II

https://www.thingiverse.com/thing:4910937