LumberJocks Woodworking Forum banner

Project Information

Here are photos of my first clamp based on the corydoras plans which I purchased. Because of the material I had available I reduced the plans by about 2/3. I used an acorn nut instead of grinding a nut round as was shown in the video. I used some left over 1/2 inch conduit (4 feet) which has O.D. of 0.71. Unfortunately my closest Forstner bit was 3/4 =0.75 inches and so there is a little bit of play which results in the clamp being out of parallel by 0.56 degrees. Now that I understand the issue I can correct this when I build sister clamps. Otherwise it works fine and was easy to build. Wood is hard maple, 1/4 AC plywood, birch doweling. The threaded rod is 3/8 inch diameter with 16 t.p.i . The wood and pipe were from the scrap pile. The threaded rod and nuts cost in total about $3.50. I should mention corydoras was responsive to my questions and easy to talk to.
I thank him for this idea.

Gallery

Comments

· Registered
Joined
·
380 Posts
Maybe you can cut a bushing out of 1/2" thin wall PVC (or maybe you would need the Schedule 40 PVC) for the loose conduit. There should be a way to tighten it up.

They look good and very serviceable.
 

· Registered
Joined
·
227 Posts
Thanks OldWranglwer I did not think of a bushing. I was thinking a set-screw at the far end of the slider might work. Of course when I build the sister clamps I can take this issue into account a priori to the build.
 

· Registered
Joined
·
1,833 Posts
Great work, awesome build and very useful.
 

· Registered
Joined
·
16 Posts
Very nice comboproof
I am glad it worked out for you:) They look great.
I liked the acorn nut idea

C
 
Top