• Beware of Counterfeit Woodturning Tools (click here for details)
  • Johnathan Silwones is starting a new AAW chapter, Southern Alleghenies Woodturners, in Johnstown, PA. (click here for details)
  • Congratulations to Paul May for "Checkerboard (ver 3.0)" being selected as Turning of the Week for March 25, 2024 (click here for details)
  • Welcome new registering member. Your username must be your real First and Last name (for example: John Doe). "Screen names" and "handles" are not allowed and your registration will be deleted if you don't use your real name. Also, do not use all caps nor all lower case.

One way easy core base for a 25" swing lathe

Joined
Nov 1, 2013
Messages
325
Likes
732
Location
Gulfport, MS
Website
www.woodtreasuresbybreck.com
I am the extremely happy owner of a Robust American Beauty 3 hp lathe. It was my plan to get a one way bowl coring system to use on it, but when I started researching the base needed, I find I am ignorant about whether one way makes a base to fit a 25" swing? I see where they sell a 24" base and then a 26" base. Since they say you need the correct base for the swing of your lathe, will the 24" base work? Any one with experience using this bowl coring system on a robust 25" swing lathe please let me know what I need to do to use this system.
 
Joined
Feb 8, 2014
Messages
1,173
Likes
611
Location
Evanston, IL USA
Congratulations on the new AB. I am sure you'll love it.

I have the 24" Oneway coring system bought for my Oneway 24" lathe when I owned it. I now own the 25" AB like yours. I am successfully using my 24" system with new Robust by simply adding a 1/2" round bar to the height adjustment system. The basic cutter height is adjusted by using the supplied round bar stock in the tool post and the tool rest post. Then it is finely adjusted with a lock nut and bolt on the bottom of each post.

Have you called Oneway and asked them? Surprisingly, they are not averse to answering questions about making their products work on a Robust.

Unfortunately, the only set-up video that Oneway has available is very dated and of poor video quality.
 
Last edited:

Bill Boehme

Administrator
Staff member
Beta Tester
TOTW Team
Joined
Jan 27, 2005
Messages
12,886
Likes
5,169
Location
Dalworthington Gardens, TX
Website
pbase.com
I can't help with your question, but congratulations on the new lathe. I don't know about the newer Robust AB lathes, but my six year old model that has a slightly different headstock design and the swing is 25½". If the swing on your lathe is the same,it's possible that the 26" coring system might work without modification. Before calling Oneway, measure the actual swing because it might not be exactly 25".
 

john lucas

AAW Forum Expert
Joined
Apr 26, 2004
Messages
8,321
Likes
3,576
Location
Cookeville, TN
Tom has probably answered your question but it seems to me the best thing to do is call Oneway. They are the experts.
 
Joined
Jun 29, 2017
Messages
799
Likes
562
Location
Jasper, Alabama
I am the extremely happy owner of a Robust American Beauty 3 hp lathe. It was my plan to get a one way bowl coring system to use on it, but when I started researching the base needed, I find I am ignorant about whether one way makes a base to fit a 25" swing? I see where they sell a 24" base and then a 26" base. Since they say you need the correct base for the swing of your lathe, will the 24" base work? Any one with experience using this bowl coring system on a robust 25" swing lathe please let me know what I need to do to use this system.
Hi Breck, don't know about the bowl coring system but congratulations on your new AB.
 
Joined
Aug 6, 2009
Messages
694
Likes
498
Location
Lummi Island, WA
I did the same thing, Bill. But mines 6 years old and has the new headstock for the 3 hp motor. Swing is the same at 25-1/2”. I think I got one of the first ones with the new motor/headstock...I ‘d guess the 26” would work, but a call to Oneway should confirm.
 

Bill Boehme

Administrator
Staff member
Beta Tester
TOTW Team
Joined
Jan 27, 2005
Messages
12,886
Likes
5,169
Location
Dalworthington Gardens, TX
Website
pbase.com
I did the same thing, Bill. But mines 6 years old and has the new headstock for the 3 hp motor. Swing is the same at 25-1/2”. I think I got one of the first ones with the new motor/headstock...I ‘d guess the 26” would work, but a call to Oneway should confirm.

When I bought my lathe, Brent told me that they were about to make a design change to accommodate larger frame size higher efficiency motors. So mine is near the tail end of the design with the larger handwheel.
 
Joined
Nov 1, 2013
Messages
325
Likes
732
Location
Gulfport, MS
Website
www.woodtreasuresbybreck.com
When I bought my lathe, Brent told me that they were about to make a design change to accommodate larger frame size higher efficiency motors. So mine is near the tail end of the design with the larger handwheel.
Bill I was so used to my pm3520B the only thing I didn't find better on my AB was the (I assume is the new smaller hand wheel) you were talking about. It is not easy to spin like the one on the pm. I fixed the problem, if I can even call it a problem by to attaching a strip of adhesive 150 grit sand paper to the wheel. It works so well now I forget it ever was not easy to spin. I have the 3 hp motor on my beast.
 
Joined
Nov 1, 2013
Messages
325
Likes
732
Location
Gulfport, MS
Website
www.woodtreasuresbybreck.com
About the one way base for bowl coring, I finally called Brent and asked him about it and he told me to call one way and order one especially made for my AB. He said a few other AB owners have told him that was what they had done, and it works well.
 
Joined
Feb 8, 2014
Messages
1,173
Likes
611
Location
Evanston, IL USA
When I bought my lathe, Brent told me that they were about to make a design change to accommodate larger frame size higher efficiency motors. So mine is near the tail end of the design with the larger handwheel.
Wait a minute... What does a "larger frame size higher efficiency motor" have to do with a "larger handwheel"?
 

Bill Boehme

Administrator
Staff member
Beta Tester
TOTW Team
Joined
Jan 27, 2005
Messages
12,886
Likes
5,169
Location
Dalworthington Gardens, TX
Website
pbase.com
Wait a minute... What does a "larger frame size higher efficiency motor" have to do with a "larger handwheel"?

Plenty. On the newer design the motor was moved closer to the centerline so that the increased weight wouldn't be cantilevered out as far. Obviously, the large handwheel size wasn't going to work so that is the reason for making it smaller. I have noticed that a number of newer model lathes also have smaller handwheels. The advantage of moving the motor closer to the centerline is that the headstock center of mass will be over the bed. The change in frame size according to Brent IIRC had to do with the phase in of increased energy efficiency regulations.
 
Joined
Feb 8, 2014
Messages
1,173
Likes
611
Location
Evanston, IL USA
Plenty. On the newer design the motor was moved closer to the centerline so that the increased weight wouldn't be cantilevered out as far. Obviously, the large handwheel size wasn't going to work so that is the reason for making it smaller. I have noticed that a number of newer model lathes also have smaller handwheels. The advantage of moving the motor closer to the centerline is that the headstock center of mass will be over the bed. The change in frame size according to Brent IIRC had to do with the phase in of increased energy efficiency regulations.

Aha, I thought you guys were talking about the handwheel on the tailstock. Brent continually makes improvements, right after I bought mine he modified the headstock handwheel with engraved indexing numbers (an easy change over), then there was the improved ruler on the tailstock spindle.
 
Joined
Jul 26, 2016
Messages
2,326
Likes
1,105
Location
Nebraska
This larger frame size higher efficiency motor standard is really going to be a PITA for older
existing equipment. Most equipment is engineered with space and material used in an efficient
manor not allowing for a lot of extra space to work with. The newer motors are physically larger
and also have a higher cubic inch junction box required for wire fill requirements. Replacing a motor
that goes bad with an off the shelf replacement will be a nightmare for older equipment going forward.
On industrial equipment we have been running into this problem for several years now, having to redesign
existing equipment to accept newer designed motors for replacements.
 

Bill Boehme

Administrator
Staff member
Beta Tester
TOTW Team
Joined
Jan 27, 2005
Messages
12,886
Likes
5,169
Location
Dalworthington Gardens, TX
Website
pbase.com
Does this make the under the pulley design easier to work with?

Are you asking whether this impacts fixed headstock lathes where the motor is below the bed? I think the answer doesn't depend on where the motor is located as much as how the motor is mounted and the clearance around the motor. If we're talking about replacing an existing motor with one of a larger frame size (the frame size is given on the nameplate) then possible problems include differences in shaft diameter and length, mounting configuration differences (mounting foot size and position or different C-face size), and the differences in overall physical dimensions. We also have to take into account motor movement with the belt in different pulley positions and clearance around the motor for adequate cooling. A motor that is mounted in the open will run cooler than one that is in an enclosure ... a very large enclosure is better than a tiny one.

I don't know if energy efficiency requirements affects imported machines. I would guess that that there are different requirements for industrial, commercial, and consumer equipment.
 
Joined
Nov 1, 2013
Messages
325
Likes
732
Location
Gulfport, MS
Website
www.woodtreasuresbybreck.com
OK I called one way and they said I can use the 24" base like a few people have already told me it would work. All I need to do is make a minor adjustment. Now I have another question what depth of cores does the one way bowl coring system create, They list the diameters of each knife set but no mention of depth is given and the lady that communicated with me didn't know, go figure. I realize this type system creates a standard shaped core give or take a minor amount of play but I just want to know what depth core will I get from the 16-1/2" knife set on say a 18-1/2 diameter wet block of wood. I know the woodcut creates a 3-1/2" deep core on a 12-1/2 to 13" Diameter
 
Joined
Feb 8, 2014
Messages
1,173
Likes
611
Location
Evanston, IL USA
OK I called one way and they said I can use the 24" base like a few people have already told me it would work. All I need to do is make a minor adjustment. Now I have another question what depth of cores does the one way bowl coring system create, They list the diameters of each knife set but no mention of depth is given and the lady that communicated with me didn't know, go figure. I realize this type system creates a standard shaped core give or take a minor amount of play but I just want to know what depth core will I get from the 16-1/2" knife set on say a 18-1/2 diameter wet block of wood. I know the woodcut creates a 3-1/2" deep core on a 12-1/2 to 13" Diameter

I can go down and measure mine in the a.m., but that's ridiculous that Oneway can't answer the questions by phone. I have had similar issues with them recently, if Kim or her brother are not around when you call it's a problem. (On the other hand, Roger at Craft Supplies is very knowledgeable and helpful). Like a lot of others, I like the Oneway coring system, but their product support videos and and website are a bit dated.
 

Bill Boehme

Administrator
Staff member
Beta Tester
TOTW Team
Joined
Jan 27, 2005
Messages
12,886
Likes
5,169
Location
Dalworthington Gardens, TX
Website
pbase.com
I am not very familiar with the Oneway other than watching another turner show me how it is used. I have the McNaughton coring system, but one thing that all coring systems have in common is that the blades must be a perfectly circular arc so that they won't bind in the kerf.. If I'm not mistaken, because of the support arm curvature, the Oneway coring system has to be set up on or very near centerline. So for a blade of a particular radius, the maximum depth will be the radius minus the distance from the pivot point to the wood. A limitation of the Oneway coring system is that the depth of the core and the diameter are constrained by the blade curvature and the distance from the pivot point to the wood. This means that you wouldn't be able to have a core that is 12" diameter and 3½" deep. However, you aren't necessarily constrained to making only hemispherical bowls ... by making thicker and fewer cores, you will have some latitude in making shallower bowls that are more elliptical or parabolic in shape.

There is no perfect coring system. The McNaughton gives you a lot more flexibility in choosing the desired depth for a given diameter, but on the other hand it has a very steep learning curve that can drive you crazy. The Oneway is more or less plug and play.
 
Joined
May 11, 2011
Messages
66
Likes
89
Location
Abbotsford B.C.
The knives of the OneWay easy core have radius’s of 5”, 6 1/4”, 7 1/4” and 8 1/2”
The pivot point for these radius’s at it’s closest point to the turning blank is 1” outside of the face of the blank. The radius’s on the knives are at the outside diameter of the cut that the knife produces, the cutting tip on the knives are 3/8” thick so you would need to extract this difference from your radius for the cored out blank. So with the largest knife being 8 1/2” less 1” less 3/8” your deepest cored out blank will be 7 1/8” max, but let’s just call it 7”.

As a side note:
With the OneWay system the knives can be moved of center by approx. 1” +/- from the center point of your turning blank. So the largest knife can yield a core of up to 18” diameter and as small as 15” diameter yet the maximum depth of the cored blank will not exceed 7”.
 
Last edited:
Back
Top