Cheers Dapph, that's very generous. I would like to take you up on the Delrin offer. Will send you a PM. It will be a good excuse to cut a keyway on a shaft for the first time. I've used the mig, stick and tig, lathe, mill and soldering iron on this so far which is half the reason for making this really. I had a good clear out of the cardboard boxes and other combustible things after I finished yesterday. It was making me a bit uncomfortable at the time but I hadn't planned on doing a lot of welding. All that stuff has been relegated to the shed. I think a further tidy up is in order.