I have the same jig, but perhpas mine has a little less play than yours. For
edge joining, I do find there is a tiny bit of offset between the two joined
boards, but not enough to make me start planing afterwards. The Dowelmax
system is inherently superior in that one egde is always fixed, so there is
no reason for the joints not to be perfect. Well, there's always a reason,
but it should be a much better system.
I suspect if, on your jig, the central threaded rod is not a really tight
fit, there will be some pivoting, which will kill the alignment of the
holes. You might want to consider exchanging it for a new one.


--
Bob

Travel and Astronomy Photos
http://www3.sympatico.ca/bomo



"Andrew Williams" wrote in message
news:270820061811118142%andrewSPAMALOT@williamsmus ic.com...
After spending the day cutting lumber to exact sizes and lining up
precise doweling markers, my cabinet is ruined because of a lousy jig.
I did not "cheap out" on this one. It's the expensive version of the
Task Self-Centering Jig and it works terribly. It may be fine for
laminating edge-glued panels (probably not), but it is awful for making
loose tenon joinery using dowels. The jig has two adjacent 1/4" holes,
spaced evenly, so that you can put two holes on each rail and post
joint.