Hi, I thought I may have problems working it out, but it's fine - Works great - I'm just wodering if there's an easier what to make sure my CV's are equally spaced along the curve than measuring by eye.... Oh yes and what does the "Optimize rigid solver" do? Sometimes I notice the links are not connected at the "ends" of the curve, but I guess that's beacuse I haven't got the spacing of CV's correct - is that so? Thanks again - Scraggy