Thanks guys!

> Now go get some sleep ;)

It's hard, I keep on finding cool new ways to use the booleans. :)

There are quite a lot of possibilities now

Check this out:

Tube with lines below it. For auto-extrude sometimes there is more than one direction that a line can be extruded in if it is on a world axis direction. Positioning the line a little bit away from the second object will disambiguate the direction and make it go towards the other object:



Select the tube, do Boolean intersection, select the lines and you've got cross-sectional cut planes:




Do a difference instead of intersection and you get thick slices, each of which is a solid (the way this part works is so cool):




And here's an interesting twist on the thick slices - here I selected all the slices and chamfered them all in one go, then unioned those back into a solid (had to do it in a couple of batches, it got a bit confused when trying the whole thing at once), then sliced it the other direction:



Ok, now time to get some sleep... :)

- Michael