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Posted by Ignoramus2031 on July 19, 2008, 1:12 pm
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What do you use to grind lathe bits (carbide ends or HSS) and is 1/3
HP grinder enough. thanks
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Posted by Dave August on July 19, 2008, 2:31 pm
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Iggy,
1/3 Hp is fine.. this is all about finesse not brute strength...
HSS or cobalt, grind on any wheel you have...
Carbide, "green wheel", best done with a water drip too.
Truely... toss all that stuff and get some T*** holders, you'll be happy you
did.
--.- Dave
> What do you use to grind lathe bits (carbide ends or HSS) and is 1/3
> HP grinder enough. thanks
>
> --
> Due to extreme spam originating from Google Groups, and their
> inattention
> to spammers, I and many others block all articles originating
> from Google Groups. If you want your postings to be seen by
> more readers you will need to find a different means of
> posting on Usenet.
> http://improve-usenet.org/
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Posted by Ignoramus2031 on July 19, 2008, 3:06 pm
Please log in for more thread options > Iggy,
>
> 1/3 Hp is fine.. this is all about finesse not brute strength...
>
> HSS or cobalt, grind on any wheel you have...
>
> Carbide, "green wheel", best done with a water drip too.
>
> Truely... toss all that stuff and get some T*** holders, you'll be happy you
> did.
Dave, I actually followed your advice and bought a BXA style holder
from Enco. It arrived a few days ago.
Today, I machined the supplied oversize "nut" to fit into the slot on
my lathe. Everything fits very well. The holder seems to be extremelly
well thought out and seems to work great so far.
I am very happy and want to thank you. I have a few lathe bits that
fit, hss and carbide ended, but a lot of them need regrinding.
Also, I have a lot of 3/4" lathe tooling, all brand name (kennametal
and carboloy), and it does not fit the BXA holder. I think that I will
mill that stuff down to 5/8" square.
i
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Posted by DoN. Nichols on July 19, 2008, 11:03 pm
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[ ... ]
> Also, I have a lot of 3/4" lathe tooling, all brand name (kennametal
> and carboloy), and it does not fit the BXA holder. I think that I will
> mill that stuff down to 5/8" square.
I've done this (3/4" to 5/8"), and I have one significant
suggestion:
Mill off the *bottom* of the shank, not the top. The height of
the cutting tip of an index is about level with the top of the shank,
and if you mill off the top of the shank the cutting tip may not lower
enough to match the center height of the lathe. There is a limit to the
adjustment range on a quick-change toolpost.
I used a wide conventional milling cutter in a horizontal mill,
not the end of a vertical, which may burn on the rather tough steel of
the shank if you aren't careful.
Good Luck,
DoN.
--
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---
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Posted by Ignoramus2031 on July 19, 2008, 11:53 pm
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> [ ... ]
>
>> Also, I have a lot of 3/4" lathe tooling, all brand name (kennametal
>> and carboloy), and it does not fit the BXA holder. I think that I will
>> mill that stuff down to 5/8" square.
>
> I've done this (3/4" to 5/8"), and I have one significant
> suggestion:
>
> Mill off the *bottom* of the shank, not the top. The height of
> the cutting tip of an index is about level with the top of the shank,
> and if you mill off the top of the shank the cutting tip may not lower
> enough to match the center height of the lathe. There is a limit to the
> adjustment range on a quick-change toolpost.
>
> I used a wide conventional milling cutter in a horizontal mill,
> not the end of a vertical, which may burn on the rather tough steel of
> the shank if you aren't careful.
OK. I think that it should not be a problem with carbide end mills.
These quick change toolposts are a great invention.
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> HP grinder enough. thanks
>
> --
> Due to extreme spam originating from Google Groups, and their
> inattention
> to spammers, I and many others block all articles originating
> from Google Groups. If you want your postings to be seen by
> more readers you will need to find a different means of
> posting on Usenet.
> http://improve-usenet.org/