Hey guys just looking for some tips from people that have had a go at making their own carbon wings. With all that's happening with corona virus I've been waiting for months to get my hands on an axis 101 but once we all go into lockdown it might be worth having a go at making a couple of wings at home to pass the time.
What sort of cores are the new high aspect wings? Are they wood? Or still foam?
any tips would be great. Cheers.

I've built a wing out of eps, hand shaped. Check out my aquarium pump vacuum pump over on the zone.

You can 100% do this. Results may vary, But they are cheap and you can make a few and see how they work.

Plywood is a great way to start. The real guys use molds but I'm sure their prototypes are all hand layup.

Ply works, but is heavy and uneven from the glue and the layers.
Balsa is expensive, but a joy to work with.
Insulation styrofoam is light, but hard to hold while shaping.
Blow foam has good weight and density, but often cured blow foam is uneven, making it hard to shape well.
Airex is nice, but expensive.
Poly surfboard blank 6'6" cost 70 bucks and can be sliced into making 10 front wings.

That's a good part of the equation.
Finding a core that is consistent in density.
Glossing so flex is even in the wing.
Bias of glass to control flex.

Some good info here on both simple and 3D printed moulds.

www.clearwaterfoils.com

www.easy3dcomposites.com/products/efoil

If you hand layup, be sure to spackle and squeegee after lamination to squeeze out the tiny air bubbles in the laminate.