|Project by comboprof||posted 06-10-2014 02:29 PM||2785 views||5 times favorited||4 comments|
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.
-- -- Cheers, Don K. (Michgan's Kewenaw peninsula)