I moved this the Developers' Forum... Thomthom is quite right - in v8 there are lots of new tools to perform boolean operations on two solids, and tools to make them solids beforehand [if possible]...[image: OTWk_Capture.PNG]

You are trying to fly before you can crawl... Learn to walk, then run etc... If you can't explain to us what it is you want to do, then how can you explain it to yourself? When I try to write some code I write it down in words, about what I'll do and then what it does etc etc... That way I know the steps my as yet unwritten code needs to go through... You haven't shown what it is you want to do. I realize that English [hopefully] isn't your first language; but there's always Google-Translate to help you [ http://translate.google.co.uk/?hl=en# ] - even if it's not perfect we'll probably comprehend its meaning - alternatively you can write in your native tongue [I suspect it might be Italian?, or if it's not something too unusual] and it can be translated by us...