Build Your Own Sacrificial Fence Clamps

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Forum topic by mikedrums posted 1620 days ago 8935 views 18 times favorited 20 replies Add to Favorites Watch
View mikedrums's profile


102 posts in 1635 days

1620 days ago

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…

20 replies so far

View Greg Elam's profile

Greg Elam

29 posts in 1639 days

#1 posted 1620 days ago

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 2421 days

#2 posted 1620 days ago

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 1635 days

#3 posted 1620 days ago

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


1769 posts in 1767 days

#4 posted 1620 days ago

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


4031 posts in 1888 days

#5 posted 1620 days ago

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

-- Ike, Big Daddies Woodshop,

View jayjay's profile


639 posts in 1645 days

#6 posted 1620 days ago

The simplest things are the greatest.

-- ~Jason~ , Albuquerque NM

View TheWoodNerd's profile


288 posts in 1791 days

#7 posted 1620 days ago

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 1620 days

#8 posted 1620 days ago

Intereting post.

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

View UnionLabel's profile


660 posts in 1799 days

#9 posted 1620 days ago

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 2651 days

#10 posted 1620 days ago

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 2261 days

#11 posted 1620 days ago

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 2846 days

#12 posted 1620 days ago

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


12252 posts in 2696 days

#13 posted 1615 days ago

Very nice.

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

View Lifesaver2000's profile


508 posts in 1711 days

#14 posted 981 days ago

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


294 posts in 1269 days

#15 posted 980 days ago

Great! There’s my next project. Thanks.

-- Bryan

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