We are talking two different hole saws. In both cases the centering bit HAS BEEN REMOVED. That's why you need the "template" to take the place of the centering bit.

The 1/4" hole saw has no centering bit when purchased. Stratmando mentioned drilling around the shank. I mentioned a Dremel bit.

The 1/2" hole saw (my estimate of the size needed) is to provide a SMOOTH HOLE to glue in your dowel. That's the perimeter you can't breech.

If you get the right 1/2" hole saw, the centering bit is removeable (set screw).

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Originally Posted by KeepItSimpleStupid

We are talking two different hole saws. In both cases the centering bit HAS BEEN REMOVED. That's why you need the "template" to take the place of the centering bit.

The 1/4" hole saw has no centering bit when purchased. Stratmando mentioned drilling around the shank. I mentioned a Dremel bit.

The 1/2" hole saw (my estimate of the size needed) is to provide a SMOOTH HOLE to glue in your dowel. That's the perimeter you can't breech.

If you get the right 1/2" hole saw, the centering bit is removeable (set screw).

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I can only find a 1/2" hole saw (I cannot find 1/4" one)... even so, I cannot find a 1/2" one without the drill bit....
the screw is embedded about 3/4" into the wood (which is about 1 1/'8 thick total)... so, even if I drill around this embedded screw... I don't want to go right though the piece of wood. The wood is a railing.