[GizmoSwan]

Hair thin anything can look transparent though. I seems to be paper thin.

As building products go, I believe rot resistant glass infused wood as a substitute for pressure treated wood is a more useful product specially in humid regions.

[joemi]

From the article, the process involves 1mm thick pieces of wood. But it's reasonable to assume that a thicker plywood could then be made out of those 1mm thick pieces and would maintain a lot of the translucency.

[wjko21]

even if it's not completely transparent and can not be used in a window, it could still be useful as a wall material to let some of the daylight into the house.

[andylynch]

Looks like they worked with 1-1.5 mm balsa. sheets. You could make this into plywood. Would be interesting to test this with denser timber.

[Pfhreak]

Especially since it appears to diffuse the light, which is actually desirable in some cases.