flat belt pulley pattern

[Rickabilly]

Lets not forget that there probably isn't a machine tool made that doesn't have some sand inclusions somewhere, as long as they are not on functional surfaces, they get through, in the same way as welding porosity is just a part of welded joints and "rolled seam inclusions" will invariably turn up on any black steel rod or bar.

Well done, I want one despite having no practical use for it.

incidentally A little heat treatment goes a long way towards improving the machinability.

Best Regards
Rick