Indexing base plate for milling machine vice
There is often a need for some means of rapid indexing on round components, such as for producing bolt heads, spanner flats, squares etc.
I obtained a rusty but unworn 3 jaw chuck and fixed it to a cast iron base plate. This was accurately machined to drop onto the register of my swivelling vice.
The clamping system uses a threaded high tensile stud into the table Tee nut, with one nut clamping the plate to the table. A strap clamp is then used to stop the chuck/intermediate plate from turning. With 2 scribed lines diametrically opposite each other, it becomes a simple matter of repositioning for the next cuts.
This is the clamping kit which has lots of other uses around the workshop, I bought it from Machine Mart and it works out at about £1 for each piece - you try making one for that price!