Just want to say thank you to Dennis for posting this how to (a very long time ago!). I have just bought a collet plate and this was very helpful in my first experiment with it last night.

I think I need to buy some screw mandrels to hold it in place as trying to work on a tiny collet is quite hard but for my first attempt I'm not too discouraged. I made a few mistakes - main one was that I didn't allow enough tube length, but I'll try again and hopefully get better.

Now to go and play with my new doming set