On Mon, 12 Jan 2004 02:53:24 GMT, "Mike W."
So work it out. If you're starting to care about the fit of a M&T
joint, then it's time to get your head around timber movement and
understand how to predict just how much it will move.
Hoadley's "Understanding Wood"
<(Amazon.com product link shortened)
is the classic book here, or the US gov wood products handbook (Lee
Valley sell a paper copy, or it's downloadable)
Then you'll need a few cheap $5 air hygrometers for your living space,
workshop space and timber storage space. Maybe a pin meter too, but
these are expensive and less useful than you might think.
Armed with the knowledge of timber movement, you can start telling
whether your joints will get tighter or looser in the future. It
doesn't really matter how they fit right now -- it's going to change
when they sit in the central-heated lounge instead of the workshop.
There are all sorts of theories about how tight a joint should be on
assembly, and whether you should be able to assemble them repeatedly
by hand, or if you need a one-off with a mallet. Personally I think
anything that I can pull apart by hand is OK. Pegged tenons though
should need a mallet to drive the pegs in.
Do whales have krillfiles ?