Hi - I can do a video later. Little swamped right now due to one of those accidental sauna projects Prefab Building - Sauna
From my impression if the cork is brand new it is soft and CNCs very nicely. I really want to do a lot more experimentation. You can sand any tabs with 220 sandpaper. If it dries it out it gets crumbly (like a wine cork) and less fun. I saturated this with teak oil and it holds up well - a year later. My preference is for chairs that are harder but If I did it again I would experiment with thinner okoume backing (good marine plywood that has a nice bend). Basically, I think some of kind of oil is your friend in terms of working and preserving with cork. On sailboats it looks super for decking and I think in that situation people use a two-part poly urethane for UV etc. The other great thing about cork is that it is a sustainable material - done right it can be harvested from a growing tree.