Hi

I'm going to be making a mold of the part detailed below:

http://www.talkcomposites.com/3221/Looking-for-best-way-to-make-this-mould

I've used Epoxy tooling gel coat backed with polyester resin and CSM before and it's worked well for me.

can you suggest any alternatives?

The mold will be made in two parts and is intended to be used multiple times for carbon/epoxy parts using the vacuum bagging technique.

How much tooling gelcoat do  you think i would need?

Thanks in advance