Quote Originally Posted by pat warner View Post
The hole and the dowel diameters have to be attended to for every session. Dowels should be sized through a steel plate before use and some material should be shaved away to verify the sizing.
I will have to disagree on that point if you are using expandable dowels, they should fit the hole and once in the hole with glue they will expand to the point you can not get them out.

In fact if you put an expandable dowel in a hole with no glue and just let it set there for a while and there is some humidity in the air it will expand to the point it is hard to get out.

If you shave off the outer part of the expandable dowels then there is no place for the glue to come up as you push the dowel into the hole and can form an air lock at the bottom of the hole and you can not get the dowel to set to the bottom.