12-12-2017, 09:16 PM
There's no doubt the four way is a much stiffer system, due to the shortened lever arm Randy. Wish I had one for the Summit. Building a dedicated boring bar holder for it is on the short list.
On the subject of rigidity. When I was building that cylindrical square, I tried using a shear tool, my HSS one would wear due to the hardness of the work piece. So I made one by silver brazing a 1 inch square carbide insert into a steel holder. Ground it to a nice sharpe edge on a diamond wheel. Could not for the life of me get it to not chatter at the tailstock end of the 6 inch piece. Would smooth out and cut beautifully at the headstock end.
On the subject of rigidity. When I was building that cylindrical square, I tried using a shear tool, my HSS one would wear due to the hardness of the work piece. So I made one by silver brazing a 1 inch square carbide insert into a steel holder. Ground it to a nice sharpe edge on a diamond wheel. Could not for the life of me get it to not chatter at the tailstock end of the 6 inch piece. Would smooth out and cut beautifully at the headstock end.
Free advice is worth exactly what you payed for it.
Greg
Greg