[11bravo]

Wasn't sure where to post this.
I build and fly high power amateur rockets and am in the process of building an all/mostly carbon fiber rocket.
I need to make a male plug from which to make a female mould from which to make the nosecone.
Attached is a zipped folder with about all the information I can think of in regards as to what I need.
It would be one half of the nose cone split lengthwise, similar to what is shown in the Alibre file; the shape of the actual nose cone in that file is NOT correct however.
Nor is the shape in the AutoCad file.
They do show the need for a rear shoulder portion.
I do not know how to import a series of points or an equation into Alibre so there are a couple of files from which the information can be found.

Points found in:
Nosecone.lst X y values.xls
Equation found in:
The Von Kármán Nose Cone.pdf

The surface would have to be really quite smooth.
In the long run I would actually need two identical halves.
Not sure what to have them made out of though.
I have some maple glued up but thought of the HDPE(UHMV) today.
Have considered aluminum.
These would be mounted to a flat piece of something and be covered with a surface coat epoxy and some fiberglass cloth to make the mould.
When cured, the mould will be pulled off and these pieces will be set aside.
They will not be exposed to elevated temps other than the heat of the curing epoxy.

Anyone think they could make one out of a 2”x4” to see how well they turn out before committing to the fancier materials?
If so, shoot me a quote for your time and material and we’ll see if we can do business.

Thanks,

Greg