Want Volume, Can't seal a group with sloped face. Help?

I’ve redrawn every line, been thru all faces and edges. Do sloped edges not allow volume measurements since this is a faces based software?
Slab.skp (109.2 KB) )

When you burrow in to the innermost group deal with the things that are preventing it from being seen as a solid…

Then the volume is shown in Entity Info.

You can get Solid Inspector2 from the Extension Warehouse. It’ll be quite helpful in these kinds of situations.

1 Like

Check out TIG’s Insepct Gap and Close Gap on Extension warehouse, also as suggested use Solid Inspector too.
There are numerous plugins does face making there as well.
Once it’s a “solid” you can have your volume

1 Like

Thank You both, I try to make due without extensions when I can. I very much appreciate your speedy support!

You could do what I did without extensions but you have to know what to look for and get rid of.