A bolt isn't the way to go, really. By their nature they aren't as strong as solid rod, and the ability to tighten and twist isn't necessarily useful. Plus (as I have said), we'd need a reverse thread tap and a matching reverse thread screw. For us, at least, that's really out of the question, and more so before Monday.

Well we fixed it. For a while. We drilled out the drill shaft threads and hammer-fitted a 6.5mm thick solid steel rod. We made a fresh cotter-pin going through the chuck nut, the drill shaft and the rod. Very solid. We then also hammer-fitted the sprocket into place and cotter-pinned that and the rod. Took us two rod attempts, and two broken drill bits (they're cheap bits, admittedly, but that rod is seriously tough stuff. We believe its original function was to be a big tent-peg). Put it all back together, put Tormenta 1's remains on it, and all looked perfect for a minute or two after some rough use. Then, snap.

The thing has snapped the steel rod too. It's crazy. We have built something we can't handle.

At this point we're so stuck for time that we may have to bash out another peg, build it just as we did, and put the torque limiter down. At least we'd have a robot that won't destroy itself. It may well be unable to lift anything much heavier than itself, though.

This is pretty disastrous, really. We never predicted this to be the weak point. Mike, if you read this, man I didn't believe you when you said you were snapping shafts but by-God, I do now!

Show is over for tonight folks, bedtime now.