I've gotten recommendations for the Aloris BXA series post and holders
and so I know that will work; I want to know if the Aloris CXA will
also work on my Rivett 1020S? The manual talks about a 12.5" swing but
it looked a little more than 13" when I measured. What should I
measure to see if CXA will work?
I assume the CXA will give me more rigidity, less tool tip breaks, and
the ability for faster cuts. The only downside that I can see would be
higher initial cost for the post/holders and I lose 1/4" swing
I'm new at this and so I'm just asking... and looking forward to the
day when I don't feel so dumb at this. Thanks again to the group for
helping me get setup.
I've got a CXA on my 15" Sheldon, and I wouldn't really want to try it
on a lathe any smaller than that. I used an AXA just fine on a 12"
Craftsman. So, I'd think maybe the BXA would be a better fit.
Measure the height of the lathe's spindle center above the top
of the compound.
Then check the height of the top of the tool slot above the
bottom of the tool holder. Let's see -- CXA is equivalent to Phase-II's
"Series 300", and I've got data sheets which cover the whole Phase-II
series list, so ... 1-7/16". The reason that this is important is that
insert tooling tends to have the cutting tip level with the top of the
tool's shank, and for the CXA/Series-300, the holders will accept a 3/4"
shank. (BXA/Series-200 is 5/8" shank, and AXA/Series-100 is 1/2" shank.
Note that I have taken tools designed with 3/4" shanks and
milled of 1/8" from the *bottom* to allow me to use them in the BXA
Yes -- if the machine has that much power and rigidity. The
main trick is to minimize overhang of the tool tip from the support of
the holder, and to make sure to take all play you can manage out of the
I agree. I'm using the BXA on my 12x24" Clausing, and could not
use the larger CXA on that. But only measuring can tell you for sure.
Also -- note that holders (and the toolpost itself) increase
rapidly in mass -- and cost -- as you step up -- and I think that the
BXA probably gives the best eBay prices, as most hobbyists are after the
AXA size for smaller machines. I opted for the BXA even though my
machine was within (at the top of) the size range specified for the AXA,
and I'm glad that I made that decision. (I'm also glad that I opted for
the wedge style toolpost instead of the piston style.
Thanks DoN. Hey, I was excited to just use my new Mitutoyo super
caliper to actually measure something! It measures exactly 1.5" from
the spindle center to the top of the taper attachment bed (that sits on
top of the slide rest), which has the T-slot; said differently, it's
1.5" from the top of the T-slot to the spindle center.
Boy is that a close one! I come in just under the wire by a 16th of any
inch for the largest tools; the only exceptions are the 'oversized'
holders (#1S and #2S) which I won't need since I'm already oversized in
the first place by going with the CXA rather than the BXA.
So it sounds as though I can go with the CXA if I'm will to pay the
extra bucks for the post/holder and tools.
>>I'm also glad that I opted for the wedge style tool post instead of the piston style
According to Mark Main :
Remember that you will want quite a few of the #1 and/or #2
holders so you don't have to keep swapping tools into the holders, which
as has already been pointed out, defeats the purpose of a quick-change
toolpost. If I have fewer than two empty holders, I feel that I have
too few, FWIW.
piston style I think that I'll go with the CXA (wedge style) since it looks like it
It should work. And hopefully, your Rivett is a rigid enough
machine to really benefit from the more rigid toolpost.