simple (naive) self collision estimates a collision ball using the spring lenght to attached neighbours (idea stolen from old cloth modifier files, but i'm sure ZAZ and genscher won't mind) -- usefull for untangeling static cloth like objects -- may be used for cloth simulation with known limitations like 'tunnel effect' if objects are moving too fast ... demo -- volatile files http://www.wund.homepage.t-online.de/hidden/sb_without_selfcol.avi http://www.wund.homepage.t-online.de/hidden/sb_with_selfcoll.avi have fun BM