[Skabana159]

I disagree. We've tried the extruded frame for the last two years and have had some problems. First, the locking T-nuts are very expensive, and the bolts for them are non-standard and must be ordered rather than just going to ACE and picking them up. You can get the cheaper, non-locking kind, but you have to slide those in from the end and that is often impossible, or at least very inconvienient. Also, the bolts are notorious for coming loose (yes, we even used loctite). Plus, without said triangle plates, it is very difficult to hold a square, even with the inside-corner pieces that you can buy to accomplish this task.

159 has (tentatively, I can't speak for every one) decided to weld a frame this year, and just stick with a design we think will work, rather than become obsessed with morphability.