Thanks for the info GOM...sort of makews sense, but to a humble polygon pusher, it's not really something I understand in anything other than outline!

Oddly enough...I am much happier with plumbing! If I lived closer, I would nip round Ke's place and fix his tap while he fixed thje animations... but I can't stump up the cash for a transatlantic flight for a plumbing job! Besides...the missus would flay me alive if I did..she would much rather I finished off the tiling I started 6 months ago!

Alletun's stuff looks odd compared to what I was gettiong. I will double check my pipeline and see if I can duplicate his results. I got much better behaved models with only occasional glitches.