oh cool! that really works, thanx juanjgon, so simple, i even didnt think that those edges without polygons could brake whole geometry, good to know =) thanks!

Hi, its been a few day I cant get rid of this artifacts on my object. I tried everything, cleaned attributes and groups by Clean SOP, Polydoctor, then i tried Divide it using Divide SOP, and then ive been told about Ray epsilon, and still nothing, its shows everytime, i was trying to delete some ...

I have Houdini 15.5.480 and gtx1070, i downloaded the latest octane demo, and couldnt install it cuz there isnt a version 480 for houdini, and the latest standalone (3.06.2) doesnt work, i dont see any geo wich i imported
this screenshot
https://lh5.googleusercontent.com/dpweDOmX1OCaftKo3tvj ...