Cubic skylight window.
https://diqn32j8nouaz.cloudfront.net...w_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...175#post184604
https://www.homemadetools.net/forum/...001#post179822
https://www.homemadetools.net/forum/...666#post170600
https://www.homemadetools.net/forum/...295#post121722
https://www.homemadetools.net/forum/...059#post103138
