I'm quite happy with my gratings so far but there are a few spots where I want to leave a hatch open. I assume they would just lean the grating against the nearest bulkhead. The problem being that my gratings are about 1/8" thick and that seems to me to be a bit on the thick side. How thin have you guys managed to make the gratings? Are there tricks to getting them that thin without them spontaneously disassembling?