On Oct 14, 8:20*am, "Doug Brown" wrote:
"RicodJour" wrote in message

news:cd4e801d-b05e-485c-8fee-
This is the standard way of enlarging a hole. *I use scrap 3/4"
plywood as it's less likely to create problems of depth, you can use
the ubiquitous 1 1/4" drywall screws to attach it, and the plywood
won't split with repeated use.

R

Or our friends at Lee Valley have this:http://www.leevalley.com/wood/page.....at=1,180,42316

I don't use holes saw too often so I have a question about this line
from the website:

"...mandrel is threaded to accept saws with 1/2" and 5/8" diameter
mounting holes."

The hole saws listed at the Lee valley site don't say anything about
the mounting hole size, but based on the description of the 2
mandrels, it appears that they all have the same size mounting hole.

http://www.leevalley.com/wood/page.a...at=1,180,42316

Does that mean I could buy the Opps Arbor from Lee valley, but would
have to find hole saws with the correct size mounting holes from some
other source?