@dude8604 said:

Thanks for your replies.

S Shepherd, it didn't seem to work. Also the file you attached won't open in Sketchup 2014. Is it possible that solid tools have been fixed with Sketchup 2015?

I saved back to version 8 and edited the post above. I'm not sure what the problem is but wonder if the scaling is a factor. Also if the cross pieces were a bit smaller or the I.D of your tube larger, the inside corner of the cutting solid wouldn't interfere with the inner wall of the straw.

straw.PNG

Shep