The bathroom vanity I got needs a shelve in the under-counter space.
One side
can easily be supported with the little peg-style supports because the
holes
would be through a verticle side inside the vanity. Unfortunately, the
other side
is at the exposed end of the vanity, so I would not want to drill
through.
So the question is how to support that side of the shelf. The end wall
is
1/2" particle board.

My current thoughts:

1. Put a collar on a drill bit to limit the depth to, say, 3/8".
Allowing for
the drill point, that should stop about 1/16" short of the outter
surface.
However, any little slip-up could spell disaster.

2. Get a length of 1/2" square hardwood stock and and glue it to the
inside surface. Clamping would be difficult, but perhaps
I could use some short screws to hold it in place while the glue
dries.

Which would be best? Any thing I've missed?

TIA

Ed