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how to securely pin a half-lap joint?

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Forum topic by rwde posted 07-11-2011 08:46 PM 3503 views 0 times favorited 6 replies Add to Favorites Watch
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rwde

41 posts in 3020 days


07-11-2011 08:46 PM

I am making an arts & crafts style picture frame with half-lap joints at the corners. I wanted to pin the joint, so I clamped sides A and B, marked and drilled a nice hole – and wouldn’t you know it, the sides must have slipped a little while drilling. When I unclamped them and inserted the pin, there’s now an unsightly gap. So – for next time, should I glue the 2 halves together, clamp & dry, and then drill? How do the pros do it? Thanks.

Rob


6 replies so far

View CharlieM1958's profile

CharlieM1958

16241 posts in 3680 days


#1 posted 07-11-2011 08:49 PM

I don’t know about the “pros” , but I would definitely glue first, and put the pin in later. I can’t see any advantage to doing it the other way.

-- Charlie M. "Woodworking - patience = firewood"

View TheDane's profile

TheDane

4997 posts in 3125 days


#2 posted 07-11-2011 09:18 PM

Second Charlie’s comment. The door on my router bit cabinet was glued first, then drilled/pinned.
Click for details
—Gerry

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View AaronK's profile

AaronK

1440 posts in 2926 days


#3 posted 07-11-2011 09:33 PM

yeah, i’ve had the same problem. the solution was as these guys say: glue first, let it dry enough, then pin it.

View Bertha's profile

Bertha

13003 posts in 2155 days


#4 posted 07-11-2011 09:34 PM

Is it “off” in the direction so you can drawbore it? If so, you might have the strongest joint around. Plus, you might be able to justify some cool drawbores. ;)

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View rwde's profile

rwde

41 posts in 3020 days


#5 posted 07-12-2011 09:31 PM

Learn something every time. And now I get to look into drawbore joints and square pins. Thanks for the comments.

View WayneC's profile

WayneC

12642 posts in 3559 days


#6 posted 07-13-2011 02:47 AM

Think there is a Chris Schwarz blog entry on this as well as a video from him on how to do this…

Update – Link to Article
http://www.wkfinetools.com/contrib/cSchwarz/z_art/drawBoring/drawBoring4.asp

Link to video
http://www.youtube.com/watch?v=yAkWMHDKB-E&feature=related
http://www.youtube.com/watch?v=nG1jNQzwvQ8&feature=related

DVD with most info
http://www.craftsmanstudio.com/html_p/AV10-D.htm

-- We must guard our enthusiasm as we would our life - James Krenov

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