[AmityvilleHams]

The best thing to do is cover the mesh edges entirely. Using two layers of wood for each lid section with the mesh between the two layers is a really good way to go about this, keeping both you and the hamster inside the Detolf safe from potential injury.

With raised lids, it would be similar except you'd need to attach at least all the side pieces of mesh from the outside for safety just in case they're ever accessed. Because of that you'd essentially have an extra layer of wood on the outside covering all of the edges.