@Daniil The SEDE import is kinda broken at the moment because of something that happened... I'm not sure when it will get fixed but it's being worked on. Once it's fixed, there'll be a manual import. I don't know if we wait until after private beta to import or if it has to be manually added.
K... Taryn says private betas aren't included but the first step in importing the data to public SEDE is to refresh the list of sites, so the next time it happens, y'all should be in there.
I am making a diy quadcopter and I need a strong and light material for its frame.
Carbon fibre is not available in my area. I have tried aluminium but it's too soft and so needs repairs. What alternatives are recommended?