Dan wrote:
On Sun 22 May 2005 12:20:15p, gregg wrote in
news
I read an article in a recent issue of a woodworking magazine, about a
guy who does 16th/17th century woodworking with wet red oak.
His M&T's are loose fit an d done with drawbores. Zero glue. Evidently
his opinion is that if you drawbore the M&T, it doesn't matter how
tightly they fit and in fact he preferred them a little lose.
Yeah, I'd like to give that a try sometime.
For those of you who just joined in (and to make sure Saville and I are on
the same page), a drawbore is when you make a M&T joint and then you run a
dowel through it - except when you drill the hole you stop as soon as you
hit the tenon, take the tenon back out, and then drill the tenon hole
about a 16th or so back.
Back towards the shoulder...(just to be sure we are on the same page)
Then you put the tenon back in, whittle the tip
of the dowel so it'll fit into the offset hole, and whack it in the rest
of the way so it pulls the tenon in, and the tenon now has a constant pull
into the mortise.
Am I correct?
that's how I understand the process.
I heard there are also metal pins that are used to line up
the holes. Put in the drawbore pin, whack it till it's inside the hole,
then follow it with the dowel and when the pin falls out the other side
you're done. Sure seems to me that would be just fine without glue.
Of course, never having tried it, I probably don't know all the things
that could be done wrong. Like drilling the tenon hole too far back or too
close to one edge or something else I can't see till I've already screwed
it up.
Dan
In this article the guy made a drawbore M&T, and then sawed through it to
show you what happens to the pin..it deforms into a very slight U shape.
This shape also helps to lock the pin in, according to the woodworker.
--
Saville
Replicas of 15th-19th century nautical navigational instruments:
http://home.comcast.net/~saville/backstaffhome.html
Restoration of my 82 year old Herreshoff S-Boat sailboat:
http://home.comcast.net/~saville/SBOATrestore.htm
Steambending FAQ with photos:
http://home.comcast.net/~saville/Steambend.htm