the parts you are referring to are made by two seperate infusions on two seperate mould, with gloss finish on outside visible side, then bonded together 

Matthieu Libeert
Founder MAT2 Composites X Sports
website: www.mat2composites.com

the easy composite video is wet lay and not infusion, you wont be able to get the resin through a large part without some sort of infusion mesh.
You need to look into a different process or change your design to suit.

+x

 

scottracing - 2/1/2019 12:41:59 PM

I'm not great with infusion techniques as i use prepreg mainly, and that's the process I use to make matched tooling and parts that have a good surface finish on both sides.

Can you elaborate on what you are making? and why you have a requirement for both surfaces to be a gloss finish?

something like this tub or the plate both were perfectly surface finished on both sides, I am wondering if it can be accomplished by vacuum infusion and how?
In this video, a very thin release-film has been used for cosmetic appearance  https://www.youtube.com/watch?v=Xm2Ezo70vFI
would it help in making large parts? or it would result in increased weight because of lacking peel-ply.


 

I'm not great with infusion techniques as i use prepreg mainly, and that's the process I use to make matched tooling and parts that have a good surface finish on both sides.

Can you elaborate on what you are making? and why you have a requirement for both surfaces to be a gloss finish?

Not really possible with infusion, can only be done with RTM or pre-preg as it requires perfectly matched moulds. 

If you're doing infusion, the only option is to resurface the back to your desired standard.

How to get a perfect shiny surface on both sides of complex parts?
Method: vacuum infusion
Materials: carbon fiber, epoxy