Thanks!, that did work after a while. Glad to have found this source for plugins and help!

Pardon this , my Sketchup experience is mainly with architecture visulizations (all right angles). I'm trying to add thickness to this spiral form , which seems possible with a push-pull on each triangular section to the desired offset- Is there a way to preform the process in one step?
Thanks!, JP

meru explode.skp