Tuesday, April 11, 2017
Swivel Head Attachment
Swivel heads are what goes on end of the screw in a C-clamp. I need something like that which screws on to 1/4"-20 bolt once it is through the threaded hole. Swivel is not required. I could also make it myself from a small cylinder with a tapped hole. Suggestions.
Called toggle pads, about $6 each. May have to make my non-swivelling version. Probably use a parting tool on the lathe to make 1" cylinders, then drill and tap 1/2" deep 1/4"-20 threads.
Made one pretty quickly.
Some of you reminded me that on a screw, the length should be twice the diameter. Is this for tension, or compression? This won't ever be in tension Good news is that I estimate there is 15 seconds of labor making these if I do it in quantity. Material cost is near zero, so at $20/hour, about eights apiece.