Build Your Own Sacrificial Fence Clamps

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Forum topic by mikedrums posted 02-17-2010 03:32 AM 17739 views 26 times favorited 21 replies Add to Favorites Watch
View mikedrums's profile


102 posts in 2308 days

02-17-2010 03:32 AM

Several woodworking retailers sell their versions of a Sacrificial Fence Clamp, for holding a scrap of material to your table saw fence in order to do cuts like tenons and rabbets. These clamps often sell for close to 10 bucks each. Here’s a version I made from a squared U-bolt and some shop scraps.

Standard square U-bolt from hardware store. Costs about 4 bucks. Wing-nuts are about 30 cents, or use jog knobs if you have them

Cut the U-bolt in half.

Sand off the sharp edges.

Fashion together some scraps to form an L that is as long as the width of your fence and drill a whole all the way through.

Finished product.

Two working together to hold some mdf square against the fence.

A video if you prefer…

21 replies so far

View Greg Elam's profile

Greg Elam

29 posts in 2312 days

#1 posted 02-17-2010 03:47 AM

Makes perfect sense. Simple, cheap, and it works. Did you have to bend the short end of the u bolt in a tad to put pressure on the center of the fence or did it just flush rite up?


-- Greg Elam - Berea, Kentucky

View Scott Bryan's profile

Scott Bryan

27251 posts in 3094 days

#2 posted 02-17-2010 03:51 AM

This is pretty neat. I have some of these clamps but this certainly looks like an economical alternative.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View mikedrums's profile


102 posts in 2308 days

#3 posted 02-17-2010 04:01 AM

Hobie, I had to bend the short end of the L because it wasn’t manufactured square.
A couple knocks with the hammers and it was perfect. :-)

Scott, when the Rocklers are on sale with free shipping (now!), it’s almost silly not to buy them. But these are done an I didn’t have to wait…. although it is nice to see that UPS truck pull up, huh? :-)

View cstrang's profile


1824 posts in 2440 days

#4 posted 02-17-2010 04:15 AM

very cool idea, simple and effective.

-- A hammer dangling from a wall will bang and sound like work when the wind blows the right way.

View bigike's profile


4048 posts in 2560 days

#5 posted 02-17-2010 04:21 AM

nice idea but i went and bought the ones from rockler already.

-- Ike, Big Daddies Woodshop,

View jayjay's profile


639 posts in 2318 days

#6 posted 02-17-2010 04:25 AM

The simplest things are the greatest.

-- ~Jason~ , Albuquerque NM

View TheWoodNerd's profile


288 posts in 2464 days

#7 posted 02-17-2010 12:32 PM

Nice idea! I’m not sure it’s worth the effort to save $15, but I like your ingenuity.

-- The Wood Nerd --

View KMJohnson's profile


165 posts in 2293 days

#8 posted 02-17-2010 01:15 PM

Intereting post.

-- Let's do it in the wood pile!

View UnionLabel's profile


661 posts in 2472 days

#9 posted 02-17-2010 04:02 PM

Great Idea. More money for projects.

-- Methods are many,Principles are few.Methods change often,Principles never do.

View Mario's profile


902 posts in 3323 days

#10 posted 02-17-2010 04:28 PM

That is awesome. I was considering purchasing a set but could not bring myself to fork over the money for them. Looks like I have a project for this evening.

Thank you very much.

-- Hope Never fails

View RedShirt013's profile


219 posts in 2934 days

#11 posted 02-17-2010 06:28 PM

Great idea. In Canada I couldn’t find these and ordering online from Rockler cost a fortune in shipping. Thank you now I can make these and save the headche.

-- Ed

View jockmike2's profile


10635 posts in 3518 days

#12 posted 02-17-2010 06:37 PM

Great idea. To bad they already have a patent on them, you’d be rich. Nice job, thanks for sharing with us.

-- (You just have to please the man in the Mirror) Mike from Michigan -

View WayneC's profile


12642 posts in 3369 days

#13 posted 02-22-2010 07:54 AM

Very nice.

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

View Lifesaver2000's profile


539 posts in 2384 days

#14 posted 11-18-2011 07:20 AM

I know this is an old post, but I have been keeping it around in the back of my mind for quite some time, and finally found the right U bolt at the hardware store to build a couple of these myself. Great ideas never die!

View Bsmith's profile


330 posts in 1942 days

#15 posted 11-18-2011 09:20 PM

Great! There’s my next project. Thanks.

-- Bryan

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