Bob, that's great!!! Thanks for the photos, I have taken the liberty of downloading them, I hope you don't mind.
Can I push the boat out a little further and ask if you have any ideas of how you might manage a circular copying facility - I mean instead of using a (I can't think of quite the right word at the moment, it is eleven o'clock at night here in NL!) dividing head for the octagons, etc, but allowing the head to move after a pattern?
I do like the chuck on your machine, it is very practical. I hope you haven't patented it!
Thanks again, I will be in touch further tomorrow. Gemma