Thanks for the welcome gents.
Rick,
Looks like I can't upload a link until my tenth post so you might have to wait for a view of the current machine in action, though if you add the obvious bits to the following you might get a glimpse. vimeo.com/210020811
The Z axis has been beefed up since this was made and I'm currently drawing up the plans in CamBam for making the X and Y axes much more rigid.
Kit