[reuelt]

You might also check out the Rockler Beadlock system. Search Results

Or
Grizzly PRO T32540 - Dual Spindle Doweling Joiner
(Just 1/10th the cost of a Domino Machine)

 

[reuelt]

I bought that doweling joiner a few years back. The info claimed it came with 3/8" diameter bits for 3/8" dowels which I have a drawer full of. When it showed up it had two 5/16" bits in. I didn't see any quick source at the time for 3/8" bits that would work in it I sent it back. I've got a self centering doweling jig that came with 1/4, 5/16, and 3/8" bushings i can change out as needed. It does all my doweling needs for less $$ than that doweling joiner.
4D

Unfortunately the drill chuck of the Doweling Joiner can only take special drill bits with shank reduced to 8mm at the end.. 8mm, 10mm and 12mm such special drills bits FOR WOOD are available.
Dowells 8mm,10mm and 12mm are relatively cheap and are available almost everywhere.