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Posted by RicodJour on October 15, 2009, 9:01 pm
> RicodJour wrote:
> >> Since this is not a piece of furniture, use a jigsaw to make the hole
> >> larger.
> > Why do people think that because it won't be seen it's not important?
> > I'd say roughly 2/3s or more of the hacked holes in studs and joists
> > end up creating a stress concentration point and splitting the wood.
> > Drilled holes rarely do that unless they are drilled too near an edge/
> > end.
> Well, there's roughing out and hacking...
> _I_ think it isn't worth spending a lot of time on because it simply
> isn't and a vertical non-loadbearing wet wall has so little bending
> stress these imagined stress concentration points are not going to be
> failure points.
Agreed it is not critical in a non-load-bearing wall.
> A main, load-bearing beam some reason to care, this application, "not so
> much". =A0There are far better places to spend the amount of time MC was
> talking about to fixup the problem. =A0(Of course, if he had bothered to
> measure the hole or test fit a piece after the first one, it would have
> saved the whole problem from arising, but that's another story... :( )
Most splits in wood start as shrinkage checking, and/or seasonal
changes in humidity, not from excess load. A hacked hole has jagged
edges that concentrate the stress.
Instill good habits. I would also venture that a hole saw in a
reasonable drill would take less time than using a reciprocating saw,
jigsaw or Rotozip.
R
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> larger.