The free-spinning locknut turns freely onto a bolt until seated against a base. Further tightening of the nut produces locking action. Operating principles of all these nuts are similar. When the ...
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I Built a Camera Dolly
Camera dollies! See this dolly in action: David Sandberg's dolly Tutorial: My Parts List: 1- 30"X27.5"X3/4" plywood 2- 1.5"X0.25"X30" angle iron 4- 4"X4"X.025" steel plates 16- 3/8"X1" hex bolts 16- 3 ...
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