Not much progress recently, what with the G3 Society Annual Show and then the Newsletter, and as I write this the sun is shining (at last) which doubtless will mean a summons from the Head Gardener. In between whiles, here are the tender buffers.
The heads and stocks are fairly straight forward turnings. Here are the stocks rough turned:
and fine turned and polished.
Drilling holes for the rivets, using the rotary table to get an even pattern. That drill is 0.8mm diameter and I decided that the hole is far too deep, so I drilled most of the way using a larger drill and left a couple of millimetres to break through. The rivets turned out to be a good push fit and would probably have held themselves in place, but I added some epoxy to make sure.
Here is the assembly. The stock is drilled deep enough to accommodate the head and the spring compressed, and then continued at a clearance diameter for the screw. The back face is counterbored quite deeply so that the head of the screw remains in the hole when the spring is fully compressed. That way the buffer is fully self-contained.
Nick