One of the good things with working on the boat during winter is that all the cold weather problems in the hull become apparent. Condensation for example.
All the windows and hatches are double glassed, but the hatches have aluminum frames that get really cold:
This is bad of course. One solution is to glue some foam insulation on the inner frame, but it would be really hard getting that to look good on such a small (2mm thick) frame. So I made some walnut liners instead. Much better!