C clamps

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Project by geekwoodworker posted 04-05-2015 04:08 PM 2747 views 3 times favorited 5 comments Add to Favorites Watch

Needed some Deep reach C clamps so decided to make some. Figured while I was at it I should build regular ones too. So I built four deep reach and four regular reach clamps. Made them from Black locust I cut up last year using my homemade sawmill ( ). All the joints are 2.5mm finger joints cut on my box joint jig ( ). I used 1/2” threaded rod. Just threaded the wood so I hope it holds up.

They work well. enjoy.

5 comments so far

View Mas's profile


71 posts in 2499 days

#1 posted 04-05-2015 05:07 PM

Those are some nice clamps. I bet they will hold up for a long time with those tight finger joints and the extra support of the bolt keeping a lot of the stress off of them.

View Woodknack's profile


12464 posts in 2617 days

#2 posted 04-05-2015 07:48 PM

These look really handy. I’ve been putting off making some until my box joint jig was done, now I have no excuse.

Been experimenting with threads in wood. So far, 5/16” & 3/8” held up well. Hardwoods obviously hold up better than softwood. But even pine held up better than expected. My 1/4×20 threads are stripping easily, not even hardwood or plastic is holding well. I suspect the problem may be my Harbor Freight taps, or maybe 1/4×20 is just too fine a thread for wood.

-- Rick M,

View luv2learn's profile


2891 posts in 2539 days

#3 posted 04-05-2015 08:33 PM

Great looking clamps Sean. Got to look good in the shop :-)

-- Lee - Northern idaho~"If the women don't find you handsome, at least they ought to find you handy"~ Red Green

View woodbutcherbynight's profile


5825 posts in 2645 days

#4 posted 04-06-2015 01:46 AM

Nice work.

-- Live to tell the stories, they sound better that way.

View geekwoodworker's profile


378 posts in 1697 days

#5 posted 04-07-2015 12:25 PM

Rick. I used 1/2 inch threaded rod for that reason. I figured the size of threads would make it last longer. Definately use hardwood for the part that gets threaded. I have used 1/4 inch threads in wood in the past with good luck but only for light duty items.


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