Just take a mould from it using signboard for the flanges. Should be pretty straightforward.  Just make them big enough so that you have space for the gum tape and the fabric.  It would be easy to use soric as your core and carbon tape at the edges (so you don't see the soric edge when it's cut), that way if you went for the thicker soric, you would easily get your thickness of panel without having to use a lot of carbon.

One thing you can't see here is that there is a bend on one edge of that panel. I can't cut sheets with that there.

Hi RRE,

By the looks of that part I would say that no mould would be needed, you could do that from flat sheet and trim to final shape and drill the holes... This method would also give you the ability to make a double "a" sided part by simply bonding 2 half thickness flat sheets back to back to give you the final thickness you require... Also not to mention that you could use the original as a "jig" to trim with a router and the holes as a way to mount the jig to the part while you route it out...

Kev.

I want to use the vacuum infusion method to make some flat panels that are about 1-2mm thick. I have attached a picture of what one looks like. My question is, do I need to make a mold for this in order to use the infusion method? I am just starting out so please bare with me and my ignorance. Thanks.