Can someone close this open polysurface?

Can someone close this open polysurface?BASE.3dm (618.9 KB)

Hi Peter - is your goal to make one single closed object from all of these?

-Pascal

Hi Pascal!

Yes.

Hi Peter - it’s a bit of a nuisance, actually because it’s not clear what you intend - for example, what is supposed to happen here:

?

I think the best thing for now, is for you make all your parts as solids and then BooleanUnion them.

-Pascal

Thanks Pascal. Will do.