Hello everybody,I'm new on this business, so I hope you can help me with this issue.
I want to make some dashboard's parts (23x18x1.5 cm) with carbon fiber laminating kit. However, these parts seem to be a little complicated to make a mould first, and then the carbon fiber part. I think there wouldn't be problem any problem with the front of the part (see picture).

But I see some difficulties with the back of the part due to flanges, ribs or threads (see picture) where screws make this part fit in the dashboard.

I was thinking in making a mould of the front and then make the front with carbon fiber. Then make a mould of the back and then make the back with resin only, since I see a bit difficult to use carbon fiber or glass fiber to make the back. The problem would be to join both parts together and get the right thickness of the original part. Fail to do this will mean noise because of vibration and also part wouldn't fit in dashboard properly.
Do you have any advice to make this part properly? Have you ever made a similar part like this?
Do you know if it's possible to mix carbon fiber and glass fiber in order to get the required thickness?
Do you know the right technique to make this part and similar ones?
I would really appreciate your answers.
Thanks.