Folks,  Back in the 1960s when I was involved in restoring numerous
reproducing grands I invented a device that was extremely useful.

To my knowledge, there has always been a device on the market in the
piano supply house catalogs called a "Miller Truck".  I owned one; it's
mainly used for flipping an upright piano on its back and requiring
only one man to use.

I conceived  of building a version of one of these for flipping a grand
piano upside down to work on the player parts.  One Sunday afternoon,
with my helper, I built one completely out of plywood and 2x4s and glue
and covered all the surfaces that touched the piano case with nice
carpeting.

It turned out to be a very useful device and we used it on many pianos.
With two men it was easy to flip a grand upside down and it was at a
nice height to work on all the innards underneath.  One caution -- you
do, however, need a liberal amount of shop space.

Ellsworth Johnson
Spokane, WA