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“Stumpy Jig Contest” Cutting Board Glue up Jig/Clamp

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Project by Kevin May posted 06-02-2012 03:07 AM 5336 views 31 times favorited 12 comments Add to Favorites Watch

I was having trouble gluing up end grain cutting boards. Keeping the cut segments square, and applying adequate ‘squeeze’ without causing the segments to shimmy up, was difficult using the pipe clamps I had. The jig I devised has a framers square built into it, so I can use that to keep the segments square as I place them into position. Also, the jig uses 2 threaded rods to apply the squeeze. By using 2 spacers under the jig, I can place the cutting board segments in the center of the of the clamp, which prevents the shimmy effect.

This jig has greatly reduced the issues of the final glue up of my cutting boards.

Obviously not made of wood, but added as a project for the ‘Stumpy Jig Contest’.

-- Kevin May "Making wood useful and fun!" www.kevinmaywoodworks.com





12 comments so far

View Tedster's profile

Tedster

2289 posts in 958 days


#1 posted 06-02-2012 03:25 AM

Doesn’t have to be made of wood as long as it’s a woodworking jig, and I’d say this one definitely puts you in the running. Great idea. Good Luck!

-- I support the 28th Amendment. http://www.wolf-pac.com/28th

View Vince's profile

Vince

990 posts in 2176 days


#2 posted 06-02-2012 07:51 AM

I like it….well done.

-- Vince

View Bob817's profile

Bob817

653 posts in 1129 days


#3 posted 06-02-2012 12:16 PM

That is a nice clamping jig, well done and Good Luck!

-- ~ Bob ~ Newton, N.H.

View rdjack21's profile

rdjack21

265 posts in 1674 days


#4 posted 06-02-2012 03:23 PM

I really like this idea and seeing that I have a bunch of boards to build I may have to make myself something similar.

-- --- Richard Jackson

View eddie's profile

eddie

7534 posts in 1361 days


#5 posted 06-02-2012 06:43 PM

nice jig ,good luck on the contest, favored too

-- Jesus Is Alright with me

View Brad_Nailor's profile

Brad_Nailor

2532 posts in 2704 days


#6 posted 06-02-2012 08:45 PM

I have had similar issues with shimmy, and keeping end grain boards from distorting while clamping…this jig looks awesome..Could you possibly provide more details on how you constructed it?

-- http://www.facebook.com/pages/DSO-Designs/297237806954248

View canoe911's profile

canoe911

54 posts in 965 days


#7 posted 06-02-2012 10:14 PM

Love your jig. I had something close in mind for the same thing.

View Dusty56's profile

Dusty56

11684 posts in 2435 days


#8 posted 06-02-2012 11:51 PM

Any “quick adjustment / release” feature involved , or do you need to crank both rods at the same time to avoid “racking” ?
Thanks for posting and good luck : )

-- I'm absolutely positive that I couldn't be more uncertain!

View Kevin May's profile

Kevin May

68 posts in 1062 days


#9 posted 06-03-2012 12:56 AM

Let me try to describe the construction and use a bit. The front is a 1×2 steel bar, mounted on 3 legs, 2” above the table, with drilled holes for the all thread. The all thread is 14mm (it was left over from a project at work, put the scrape barrel (beggars can’t be choosy)) with nuts welded on. The rear is a 1×1 steel bar, mounted on 1 leg, with M14 tapped holes for the all thread. There is a framing square, in which I cut 2 mounting slots in the short leg, and tapped two 5/16-18 taps in the top of the front bar. The slots allow the square to be adjusted to allow the cutting board segments to be clamped in the center of the jig. I have a couple of pairs of spacer boards that I place under the cutting board segments. The purpose of these spacers is that I can locate the cutting board segments centered on the 1” clamp bars.

Using the jig is not really different from using other clamps, except that as you place each segment of cutting board in the jig, you align the end of the segment with the edge of the framing square. When all segments are placed together, I use a ratchet with socket to tighten the all threads. As the thread is fairly fine, I can tighten alternate ends without any racking.

With a 1/2” ratchet on these two all-threads, I can apply significant force, and can do so quickly, on the center of the cutting board segments, so no racking or shimmying.

I hope this helps. Thanks for the interest.

-- Kevin May "Making wood useful and fun!" www.kevinmaywoodworks.com

View Roger's profile

Roger

15280 posts in 1551 days


#10 posted 06-03-2012 12:59 AM

A very nice jig, and I’ll bet it works super. Good luck in the contest. Congrats on the top-3 also. :)

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View Kevin's profile

Kevin

539 posts in 1046 days


#11 posted 06-03-2012 01:47 PM

Kevin, thats a great jig looks like it will work great. Thanks for the posting and for the description of the jig. Good luck in the contest.

-- Measure twice, cut once, then rout a whole bunch

View Boxguy's profile

Boxguy

1538 posts in 1014 days


#12 posted 06-10-2012 08:18 AM

Kevin,

I like the concept and your design looks like a winner to me.

Have you considered tying the two threads together with a bicycle chain and two same sized bicycle sprockets so they stay in sync with each other and will work together?

I use a battery powered impact driver to move the nuts on my press.

-- Big Al in IN

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