Lobster wrote:

See what you mean. I just think you'd be hard pressed to get a staple
(or nail) through the upper half of the groove so that it doesn't
impinge the tongue of the next board - that's why it's normally done by
a nail through the tongue, aimed diagonally backwards (if you get my
drift) so the nail doesn't protrude beyond the tongue and interfere with
the next groove. If you can do it through the groove, them up to you!

I would agree that through the tongue is better, although I expect a
light guage narrow crown staple from a nail gun would work just as well
as a nail. So long as the gun head is small enough to accurately
position the staple, then there should be no problem since narrow crown
staples will usually be set just bellow the surface of the wood anyway.

--
Cheers,

John.

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