OMG!!!! You guys are GENIUS!!!!! I didn't read all yet but there is the answer for sure! Thank you sooooo mush!

Hi Numbthumb,

Thank you for your reply. It's really good site. I saw them too and it helped me to understand the principle but still in trouble to make them. I didn't read them all so I'd better read them all first. Hope it gave me an answer suddenly

I have tried to make British Museum roof structure. I learned how to make the basic geometric shape on here but the circle and square mixed roof is too difficult to make.

Thank you so much!! It was a great tutorial and inspiration!