Our latest design gives a more easily and quickly constructed accessory without losing any rigidity. A sturdy aluminium casting (doesn't mark your boring table) fitted with substantial porous bronze bushes now accepts a ground steel ram carrying the cutting tool. The casting is fixed to the cross slide of the lathe using 2 bolts in a common tee slot. Angular setting is by protractor, a sliding dowel quickly returns the ram to the parallel position.
"Broach" bars can be made for keyways to virtually any size and customers have also reported success cutting internal gears. The keyways are broached a few 0.001"s per stroke with feed increased by the cross slide.
While the main casting is suitable for ML7 and Super 7 lathes, it is substantial enough to allow machining down to suit ML10 lathes. The kit includes 2 aluminium castings, steel, bushes, HSS tools, fasteners, drawings and instructions.