rhankey
Well-Known Member
- Joined
- Feb 21, 2011
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Does anyone have any comments as to who sells high quality BA taps in the US? If the best source is to get them from the UK, then that's ok, but shipping gets a little expensive.
In my searching around here, I'm seeing I should get HSS over carbon. Of the US company names I'm finding from my searches on this site, none seem to offer BA taps.
My current complete set of BA taps and dies is British made, which I ordered from the UK.
I just broke my first 7BA tap, and one of the other 7BA taps doesn't feel like it is going to last much longer either. Fortunately it broke in a 1/16" thick through hole, but in an awkward corner, so I was able to get the broken piece out with about an hour of work. I do use a chuck guided tap holder to ensure the taps go in dead straight. I think these taps have become dull, though Im not sure ever worked quite as well as some of my larger BA taps. I have had to tap quite a number of 7BA holes, most of which in SS, so Ive probably done well to go so long before breaking one. Shortly I will have roughly 75 to 100 7BA holes to tap in an a 2-piece cylinder casting, which is not where I want to be breaking any drills or taps.
I appreciate any advice you can pass on.
Robin
In my searching around here, I'm seeing I should get HSS over carbon. Of the US company names I'm finding from my searches on this site, none seem to offer BA taps.
My current complete set of BA taps and dies is British made, which I ordered from the UK.
I just broke my first 7BA tap, and one of the other 7BA taps doesn't feel like it is going to last much longer either. Fortunately it broke in a 1/16" thick through hole, but in an awkward corner, so I was able to get the broken piece out with about an hour of work. I do use a chuck guided tap holder to ensure the taps go in dead straight. I think these taps have become dull, though Im not sure ever worked quite as well as some of my larger BA taps. I have had to tap quite a number of 7BA holes, most of which in SS, so Ive probably done well to go so long before breaking one. Shortly I will have roughly 75 to 100 7BA holes to tap in an a 2-piece cylinder casting, which is not where I want to be breaking any drills or taps.
I appreciate any advice you can pass on.
Robin