Swingman wrote:

Try _not_ making the part that you want the hole in, a 'group' or
"component", and that may make it easier for you.

That part is easy - I drew the blank and never tried turning it into
anything. I suppose that made it a plain vanilla "model".

Draw your cylinder (but maker it longer, so that it sticks out on either
side of the part); make it into a "component"; poke it through your curved
surface with it sticking out on either side; then use "interface with
model"; then "explode" the cylinder; then erase the parts of the cylinder
you don't want, starting with the ones sticking out each side, then the one
in the middle (three parts, plus the ends);, lastly, erase the remnants of
the cylinder (a circle on either side) on the face of the curved surface.

Ok. I'll give this a try as soon as I can (got to run a few errands first).

It takes less time to do than tell, and if you're familiar with the program,
and some of the above is not even necessary ... if you're really interested,
and I can find the time today, I'll make you an animated "tutorial" of the
steps above ... using the "scenes" function, a tutorial is easy to do in
SketchUp.

Well - of course! Everything's easier once one knows how.

If you get time, I'd be really interested in the tutorial (I suspect I
have a "forehead slapper" coming up...

Thanks!

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/