Are you looking at making a nozzle for an Estes motor? not sure I understand what you want but if you are wanting to make a nozzle, you can use graphite rod but I am not sure what diameter of a motor you are looking at making. If you are looking at replacing an igsisting nozzle you need to understand that most all commercial motors including Estes motors us eroding nozzles and it is not advisable to replace an eroding nozzle with one that will not erode or erodes at a different rate. Also changing the nozzle also makes a motor not certified so you need to keep that in mind if you are only a NAR member you can not fly that at an launch.

feel free to email me at jamesr2 at gamil dot com if you want to talk about this in a little more detail.

JamesR

Its not for the motor but its part of the rocket. The Geo Sat LV has 2 boosters attached to the side and has plastic nozzles to simulate an actual rocket. I would like to put motors into the boosters but would melt the existing plastic nozzles. Hope this makes more sense.

Sure I could just remove them, but that takes away from the rocket itself.

you need to be careful that the nozzle does not change the function of the motor, if it is a bell or shroud around the motor you will need to use something like the aluminum bells that I think RT made but at a smaller scale. Smaller scale and light weight AL may not be an option graphite is to brittle, you may have to go with a hard plastic and have it replaceable.

As odd and off-the-wall as this may sound, I think I may have two of those nozzles from the 80's. PM me with your e-mail address, and I'll take a picture of what they look like. Up to you. You can put 1/2 A's in, maybe even normal A-C's, extended slightly, without melting the plastic. When I faced a melting or fire problem in the past, I always used the black 4000 degree paint for BBQ grills. It keeps the burning down.