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GEP
03-09-2016, 08:37 PM
Does any one have any experience with this tool post ? I think its made in Putin country

http://www.banggood.com/Mini-Quick-Change-Tool-Post-Holder-Kit-Set-For-TableHobby-Lathes-p-983345.html

metalbender
03-09-2016, 09:46 PM
In the shipping it says shipped from China.

spongerich
03-09-2016, 09:53 PM
If you're looking for a small qctp, check out A2Z CNC. They have a USA built set for about $100. I had one and it was very nicely made.

lakeside53
03-09-2016, 10:41 PM
"Little machine shop" carries a similar (same?) aluminum "sub-axa" post.

danlb
03-10-2016, 12:04 AM
Does any one have any experience with this tool post ? I think its made in Putin country

http://www.banggood.com/Mini-Quick-Change-Tool-Post-Holder-Kit-Set-For-TableHobby-Lathes-p-983345.html

I do not.


There is not a lot that can go wrong with a piston style tool post. All they have to do is....

get the dovetails perfectly parallel

Heat treat the central cam.

Turn the cam so it locks up properly.

Heat treat the piston.

Anodize the aluminum

Use good grade set screws in the holders.

Chamfer the edges.

Make the base flat so it mates to the compound well.

Clean off all the burrs.

Ream all the bores so they don't hang up.


hmmm. Might be worth buying a brand name such as the A2Z mentioned above.

Dan

alcova
03-10-2016, 12:39 AM
What size lathe are you getting this for?

PStechPaul
03-10-2016, 12:47 AM
It's probably the same as that offered by www.littlemachineshop.com as their #2461 or 2271 for $100, but it seems they no longer offer it, although it's in their printed catalog. I bought their larger steel QCTP at Cabin Fever for $150.

http://littlemachineshop.com/products/product_view.php?ProductID=2280&category=

For just $50, the Banggood product (http://www.banggood.com/Mini-Quick-Change-Tool-Post-Holder-Kit-Set-For-TableHobby-Lathes-p-983345.html) is probably OK, and the customer reviews seem favorable. However, they indicate that the dovetails have a rather loose fit.

Carm
03-10-2016, 08:14 AM
I do not.


There is not a lot that can go wrong with a piston style tool post. All they have to do is....

Dan

Thanks for the chuckle.
Some of the conditions noted can be improved by the purchaser.
Seems very little to lose at that price...doubt I could get raw materials for that, excluding scrap.

GEP
03-10-2016, 08:22 AM
Thanks for your comments. I had this 10" atlas for 40 years and was thinking of using the tool post for that. What is the opinion of a piston type compared to a wedge type

Carm
03-10-2016, 08:49 AM
What is the opinion of a piston type compared to a wedge type

My experience, wedge has better repeatability. This compared to a piston where I expect sub .001"
Piston wouldn't do that, have wedge in my home shop, but it really wouldn't matter.

1200rpm
03-10-2016, 09:11 AM
too small for 10" Atlas IMO

RichTes
03-10-2016, 10:56 AM
I had an AXA on a 9" southbend. Can't imagine using anything smaller on the Atlas.

Rich

lakeside53
03-10-2016, 11:41 AM
I would just use a steel axa size for that. Imports are cheap enough..

GEP
03-10-2016, 12:52 PM
I would just use a steel axa size for that. Imports are cheap enough..

I agree . Thank you all

duckman
03-10-2016, 04:55 PM
CDCO.com has an axa wedge size for about (IIRC) $80 USD . That is what I use on my 9" SB . if you go to Frank have patience and buy extra holders so cheap you can't go wrong.

sarge41
03-10-2016, 06:00 PM
Thanks for your comments. I had this 10" atlas for 40 years and was thinking of using the tool post for that. What is the opinion of a piston type compared to a wedge type

GEP: In my opinion, the wedge type is more efficient. Stop to consider the way they work. The piston type pushes the tool block away from the post to lock up against the dovetail, sorta hanging out in the air. The wedge type pulls the tool block back against the tool post to lockup with a wider and more rigid base.
To me, it makes all the difference in the world. I have been using both for almost fifty years, since they first came out in the mid sixties.

Sarge