26822RE: RE: How would I machine a flat-bottomed hole with a boring head?
- Oct 24, 2013
Yes it seems a bit surprinsing. The pain of using a boring bar for making a flat-bottomed hole did come through, though. Wow, just think about stepping a boring bar across the bottom using the head's micrometer adjustment. I'd go for a counterbore scheme before trying that.
Owning a lathe & being able to easily move a boring bar across the bottom of the hole just seems so simple in comparison to using a miller. Right tool for the job....
BTW I haven't had my boring head all THAT long!
---In GrizHFMinimill@yahoogroups.com, <firstname.lastname@example.org> wrote:
I'm surprised that the "not often really needed" came up, because it seems to me it would be a common operation. For example, it seems to me that any time that you were going to mount a bearing, you would want to bore such a hole with a very flat lip so the bearing was properly aligned. But, with a bearing, you're only dealing with a lip, so you could probably use John's first suggestion.
As John also pointed out, there is a special type of boring bar that can also face. From what I understand, it costs some serious bucks...
Thanks for researching it... the fact you've never used yours leaves me wondering if I need one. I'll probably just wait until I have a need before buying...
---In email@example.com, <mark.kimball2@...> wrote:
Doing an internet search on the subject was interesting. Most opinions ran something like "not easy to do", "not often really needed", or "do it on a lathe". RT's+endmill, and CNC also came up a lot.
Being the owner of an un-used boring head (so far), this subject was of particular interest to me. Thanks for bringing it up!
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