04-19-2015, 05:58 PM
(04-19-2015, 05:39 PM)Mayhem Wrote: Nice job Ken but I wonder if this will now make it more chatter prone?
Possibly, but the machine it's to be used on has a rather slow top limit on spindle speed. The head itself is rated for 12,000rpm, they got 4,500 max. Those heads are super well balanced, I think they'll be OK or I would have refused to do it. It's only boring out .02" (0.5mm) on diameter.