Someone wrote an extensive review of the Delta jig in this newsgroup a few
weeks ago. Among other things, I recall that he had to flatten the base to
make it usable. Perhaps yours is an older model.

Jay

"Stephen M" wrote in message
...
I prefer a shop made version a la Tage Frid. From what others have
reported
on the Delta tenoning jig, you can make your own jig and be cutting
tenons
in less time than you will spend cleaning up a Delta jig to be usable.

As an owner of the Delta, I find that hard to believe.

It takes about a minute or two set up for a cut.

I do not have a microadjust on my cabinet saw fence. For most work, that
is
fine but it IMHO it is necessary for tennon cheeck cuts. Being able to
literally dial that in (+/- .005") using the microadjust on the delta jig
is
worth the price of admission.

YMMV.

I recently made a table top with (an admittledly over-the-top complicated
series of ribs) with 50 tennons. I'm glad I had the jig.

Is it better than the competition? I've no idea.

-Steve