Roubo Revelation

I’m not sure I understand the question in the last paragraph. Are you asking if the pegs were knocked all the way through the holes in the tenons, or if the holes were drill completely through the legs, or something else?

-- More tools, fewer machines.

I’m wondering if the holes go all the way through the tenons.

Yes, all the way through the tenon. You don’t necessarily have to go all the way through the other side of the leg (but you do want a good insertion), but you want to go through the tenon. Generally easier to go all the way through.

Make sure you have a good taper on the pins, it really helps get the pin through the offset holes. My attempt at draw boring had pretty mixed results, mainly due to not enough taper and too much offset in the holes.

-- John

The Woodwrights Show Roy Underhill

has a great programme on this

great question I could show someone

but I couldn’t write how.

-- Who is the happiest of men? He who values the merits of others, and in their pleasure takes joy, even as though 'twere his own. --Johann Wolfgang von Goethe

I’ve been studying a lot of Chris Schwarz’s articles on workbenches (‘cuz I’m building a Roubo, too), and I’ve seen the holes for the drawbore pegs go all the way through the legs on some drawings and not completely through on others. I think that part is a matter of choice.

Here’s a picture of a drawbored joint:

which came from this article:

http://www.wkfinetools.com/contrib/cSchwarz/z_art/drawBoring/drawBoring1.asp

But note that the article shows the hole for the peg not going all the way through the leg.

-- More tools, fewer machines.

Marc Spagnolo (www.thewoodwhisperer.com) had a video on this recently I think….

found it.

http://www.thewoodwhisperer.com/videos/drawbored-mortise-tenon/

Seems to make it a pretty step by step process.

Mine go all the way through. Made sense to me that I get just a little more holding power by going thruogh.

-- Sawdust and shavings are therapeutic

Awesome, thanks everyone. I just polished up the fit and finish on the legs and I’ll be adding the stretchers tomorrow most likely. Then its on to the drawboring.

No need to go all the way through the leg. If there is enough supporting material on the other side of the Tenon for the pin to go into your joint will be fine.

In the case of the bench that Marc Spagnolo built the Mortice and Tenon are on the outer portion og the leg. This means that the Pin going in only needs a hole drilled into the mortice side far enough to draw and keep the 2 parts drawn tight.

-- Ken, USAF MSgt, Ret.