Earlier, Ernest Christley wrote:

I've got to cut slots for the rudder cables in both the floorboards and
the rear skins. Are there any tricks for locating the necessary slots
in a way to keep them as small as possible?

If you can remove temporarily the panels to be drilled/slotted, maybe
you can aim a laser pointer down the cable path so it lines up with the
pulley grooves, then reinstall the panel and mark the laser spot.

When I was installing the push-pull tubes for my HP-18 center stick
retrofit, I made a nifty little tool that aimed a laser pointer down
the axis of where the tube would go. Then I'd just mark the laser spot
on a bulkhead, holesaw it, and move on to the next one. I seem to
recall that I'd borrowed my daughter's pointer, and what I was marking
was a tiny picture of Tinkerbelle...

Thanks, and best regards to all

Bob K.
http://www.hpaircraft.com/hp-24