03-28-2015, 06:26 PM
Thanks Ed!
I've long been kind of reluctant to try blind holes with the older style spiral flute taps, having broken a couple many years ago at work. With today's tooling technology, it's "cake." I realy was on the fence about whether or not a 2HP spindle could handle a 3/4-10 tap, not anymore though!
One thing I never do in tapping is compromise the percentage of thread by drilling oversize holes. If you need to do that because you're breaking taps...you're using the wrong taps.
I've long been kind of reluctant to try blind holes with the older style spiral flute taps, having broken a couple many years ago at work. With today's tooling technology, it's "cake." I realy was on the fence about whether or not a 2HP spindle could handle a 3/4-10 tap, not anymore though!
One thing I never do in tapping is compromise the percentage of thread by drilling oversize holes. If you need to do that because you're breaking taps...you're using the wrong taps.