“@engineers_feed Lot of ways to melt & join steel. Mostly just needs to be welded consistently & with…”

“@engineers_feed Thankfully not. FSW is very difficult to get right & not needed with steel.”

“Production version will be a lot more polished than this prototype, but still fun to see”

“@ColinPearceUK Bigger flaps/fins at rear also moves center of pressure back”