Sorry to the trouble. The vertical section went great. I am now doing the same with the horizontal section but the ends aren't closing after the follow me. I read some where that if the object was too small the ends might not close so I expanded it double and it still is not closing. What am I doing wrong?

venturi8.skp

Wow, thanks for the video. I DID IT!!!

Using followme makes sense to me since the end result would be solid. But I can't figure out how to make a profile that I can use with followme.

Thanks for all the comments. It has opened my eyes to things I was not aware of before. I will give it a go trying to follow TIG's instructions but, like I said, I am not a pro and this was a see-if-I-can-do-it thing. I imagine this is going to be too much for me to learn.

I am using Sketchup Make 2017. I am not a pro so everything is trial and error. Finally have my object sketched and want to be able to print it but I know it is not a solid. I used Solid Inspector but couldn't get there. I have read and watched tutorials but just don't know how to fix it. I am hoping someone will help me. The "pipes" have to be open and the notch in the middle has to remain. I think it looks pretty good for not knowing what I am doing but it doesn't do any good if the design just stays on the computer. I have uploaded the design. Thanks for your help.

venturi6.skp