Peeling off layers in infusion part

Hello,

This is my first post in this forum.

I am learning about composites and infusion. I have just done my first test of infusion with MTI hose.

I used 13 layers ranging from 163 g/sqm to 600 gr/sqm bidirectional, and was surprised of the thin result I got.

I didn’t post-cure the part, nor waited much time after the epoxy went hard. I wanted to do some test as soon as possible.

The resistance seemed good, but when I trimmed some edges on the band saw, I saw that on the damaged part the thin top interior layer was starting to peel off.

I just pulled, and I could remove most of it.

I am sending attached a picture.

Can this be a problem of epoxy not cured enough? Low amount of resin?

Many thanks in advance for all your help and kind regards from Spain,