On Mon, 20 Jul 2009 21:43:14 -0500, Leon wrote:

"Lew Hodgett" wrote in message
...
Was watching an old "What is it" segment of "Ask this old house" the other
night.

A viewer had sent in a working prototype of his idea.

A circular piece of wood 1/2"-3/4" thick with a group of 3/8" dowel pins
projecting about 1/2" from a flat face.

The dowels were arranged in a geometric pattern that just happened to
match the dust pick up holes of his ROS.

Application:

Place sandpaper on gadget aligning holes with dowels, then align dowels
with holes on ROS and seat paper.

Neat idea IMHO.

Lew


I never found it hard or necessary to align the holes that precicely.

Quite. If there is a problem, just stick a pencil into one hole on the
ROS and drop the sandpaper over that, through the corresponding hole
in the sandpaper disc. Aligning all the other holes is now merely a matter
of rotating the sheet.
Remember to remove pencil before operating the tool.

If that's too difficult (then maybe you shouldn't be using power tools :-),
just use another pencil in another hole - 2 reference points is all you'd
ever need.