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jmm03
11-07-2018, 08:22 PM
Hello all, we have a lathe at work that came with a chungoo forge wedge type tool holder. Its not a Dorian but it is perfectly functional for our needs. I need to add a few more tool holders and need to know if I can buy some as available and have a reasonable chance of them fitting the tool holder. (it really is a no name holder, pretty sure of chinese or taiwanese origin , good fit and finish and locks up tight) Any advice or sources would be appreciated. Thanks, Jim

Sun God
11-07-2018, 08:38 PM
Pretty sure any 250-2xx series toolholder will do the job fine.

danlb
11-07-2018, 09:15 PM
Since none of us have ever seen a chugoo forge brand, it's a crapshoot as to whether it conforms to the BXA dimensions. If it said BXA on the box or on your existing equipment you should be good with Sun God's advice.

The wedge style should be pretty forgiving since the wedge expands within the dovetail. If the dovetails are a touch too far apart or a little shallow it should still work.


Dan

v860rich
11-07-2018, 09:31 PM
Just buy 1 and see if it fits, then go from there...

THANX RICH

Illinoyance
11-07-2018, 11:34 PM
I have import toolholders in both AXA and BXA sizes. I see no difference in performance compared to US made toolholders. The Aloris style toolposts are not super critical on the dimensions of the toolholder. The wedge draws the toolhoder tight to the face and to the dovetail in spite of some dimensional variation in the toolholder. The setscrews on the import toolholders are junk and need to be replaced.


People ask me why I am so damned grumpy. I am old. It is my job.

jmm03
11-07-2018, 11:46 PM
chungoo forge=any generic offshore brand...

KiddZimaHater
11-08-2018, 12:04 AM
Yes, BXA holders are pretty much universal with the dovetail dimensions.
I've purchased several 'Cheapies' from the CDCO Company online, and haven't had any 'fit' issues with any of them.
The super-soft set screws are another story however. :mad:

RichR
11-08-2018, 12:08 AM
Yes, BXA holders are pretty much universal with the dovetail dimensions.
I've purchased several 'Cheapies' from the CDCO Company online, and haven't had any 'fit' issues with any of them.
The super-soft set screws are another story however. :mad:

I bought AXA holders from CDCO last February and the setscrews were just fine.

JoeLee
11-08-2018, 12:46 AM
When it comes to tool post and holders a couple thou on the dove tail or flats of the tool holder can make a huge difference in where the locking handle ends up when locked.
This is one of my biggest complaints with them.
I have an Aloris BXA and a few tool holders that are shy a couple thou somewhere and the result is where the handle ends up when locked. It's a PIA when the handle ends up in the six o-clock position hitting you in the stomach.
If Aloris can't control the tolerance of their products I highly doubt any aftermarket copies will mate any better.

JL.....

mikey553
11-08-2018, 07:28 AM
I have bought 6 or 7 BXA tool holders from Shars just 2 months ago to fit my Phase II wedge toolpost. I have to agree with JoeLee here - the tolerances on the post and holders are critical to establish the post handle position when locked. Shars website is no help in this respect. An email to them did not bring the answers either.

So I decided to take my chances and buy the holders. The result - they are a perfect fit to the post, all of them have the same locked handle position. Even the screws are serviceable. Shars holders are rather long, longer than many from other places. Not sure if it is a good or bad thing...

jmm03
11-08-2018, 08:05 AM
Thanks to all so far, I suspected there was not a significant difference among the various off brand suppliers, but a reference from those that actually have experience to me at least, is invaluable. Jim

3 Phase Lightbulb
11-08-2018, 08:53 AM
I also recently bought a bunch of BXA tool holders from Shars for a BXA Phase II wedge and they are great:

http://www.shars.com/turning-and-facing-holder-1-type-201
http://www.shars.com/boring-turning-and-facing-holder-2-type-202

Seastar
11-08-2018, 09:20 AM
I have about two dozen tool holders from CDCO and they all work well.
I'm frugal/cheap!
Bill

loose nut
11-08-2018, 09:33 AM
Same here. Is the repeatability perfect, probably not but for a manual lathe that really isn't a big an issue. I have over 30 holders now, all of them are well made and the only problem is that the screws, from various suppliers, are different. That just means having to use different Allen keys but that isn't a major concern.

ken
11-08-2018, 09:48 AM
I only ones I have found that are too big in the dovetail are US made Armstrong holders. They most likely fit ther tool post just fine but the 2 I have dont work well the Aloris tool posts I have. I have 4 B size Aloris tool holders I got at a sale that fit so tight they are hard to get on the tool post. I was told that Aloris changed the spec's on the dovetail at some time ?? Ken

JoeLee
11-08-2018, 06:27 PM
There isn't a whole lot that can go wrong with tool holders. Either they don't fit properly or lock snuggly, that's about it. As far as the handle position that's just a tolerance issue. I've had a few Aloris holders where the slot was machine so poorly and out of square that I had to clean them up.

JL.....

studentjim
11-08-2018, 06:44 PM
I buy my BXA tool holders from Amazon and they all work fine. Again the set screws are garbage and need to be replaced. I consider them a good deal at $20.00 each.

thaiguzzi
11-08-2018, 10:44 PM
There isn't a whole lot that can go wrong with tool holders. Either they don't fit properly or lock snuggly, that's about it. As far as the handle position that's just a tolerance issue. I've had a few Aloris holders where the slot was machine so poorly and out of square that I had to clean them up.

JL.....

Maybe try some Made In India ones............:cool:

JoeLee
11-09-2018, 08:21 AM
Maybe try some Made In India ones............:cool: NO THANKS !!! India is way worse than China. JL..............

3 Phase Lightbulb
11-09-2018, 08:23 AM
NO THANKS !!! India is way worse than China. JL..............

Made in India and Made in China should be fine. It's the Made from India and Made from China you should avoid :)

quasi
11-09-2018, 02:28 PM
the BXA holders I bought from CDCO were made from AXA size blocks. My Brother bought some CXA holders from them and they were made on BXA size blocks. Now I also buy on Amazon, it is the best deal for Trulanders.

loose nut
11-09-2018, 02:47 PM
Strange. I have a lot of BXA holders from CDCO that are the same size as the ones I bought out of a industrial supplier.

metalmagpie
11-09-2018, 02:48 PM
Buy half a dozen of these? http://cdcotools.com/item.php?itemid=482

quasi
11-09-2018, 03:24 PM
Strange. I have a lot of BXA holders from CDCO that are the same size as the ones I bought out of a industrial supplier.

to be fair it was probably 10 years ago at least, and they had the cheapest price on the internet.

MotorradMike
11-09-2018, 04:41 PM
I just bought a holder that says CMED on it over a globe.
It would not fit on my Chinese post which is a piston type Aloris knockoff.
The dovetail depth was .003 more than my other holders so it would not slide down.

KBC offered to take it back but after thinking about it and finding that the material wasn't hardened, I milled .006 off the back and now it works just like the other ones. 10 hours of cogitating, 10 minutes of setup and cut.

I would expect the Aloris ones to be tight tolerance with never a no-fit.
I think it's a free-for-all on the Chinese ones though.