help ideaing these angles

[tom daniels]

Does anybody know what these angles are called and how to lay them out? I had a link explaining everything about them but pc crashed and I lost everything.
Thank you
Tom

 

[Bill Boehme]

Does anybody know what these angles are called and how to lay them out? I had a link explaining everything about them but pc crashed and I lost everything.
Thank you
Tom

The image is hardly any larger than the thumbnail. Do you have a larger version that you could post?

 

[tom daniels]

The image is hardly any larger than the thumbnail. Do you have a larger version that you could post?

no that's the largest picture I have

 

[Joe Greiner]

A magnified screen capture (Print Screen Key, msPaint Paste) indicates on-screen measurement of about 1" diameter for the upper ring and 3" for the lower. There appear to be 6 divisions, with the lower end of the fins offset by one division (which may be just by chance). The vertical dimension is immaterial.

A quick and dirty plan view sketch indicates that the fins are approximately tangent to the upper ring.

"Tangent" might be the term you seek. Adjust the dimensions of the two target diameters and choose the number of divisions. Each tangent is perpendicular to a radius at each point on the upper ring.

If you force the offset instead, the fin might not be tangent, but it might not matter.

 

[gary rock]

Tom

You mght give Andy Chen over in College Station, TX a holler. He does wonders with segmenting work. andy_c_chen@yahoo.com

Gary:cool2:

 

[Brian McInturff]

From looking at the pic on the iPhone it looks like compound angles to give the illusion of a slight curve.

 

[ihmserv]

try this link to "turned by george"

check out his segmenting gallery page they look similar

i believe he(or maybe someone else) posted here a few years ago

but couldn't find that info.

http://turnedbygeorge.com/id66.html

IAN

 

[tom daniels]

try this link to "turned by george"

check out his segmenting gallery page they look similar

i believe he(or maybe someone else) posted here a few years ago

but couldn't find that info.

http://turnedbygeorge.com/id66.html

IAN

That's it thank you very much

 

[Malcolm Tibbetts]

Tom, there several ways to accomplish this type of effect. The simplest would be to cut "simple" (not compound) mitered segments from over-sized material. The trick is to cut all the angle on just one side of the segment. For example, if a normal segmented ring were constructed with 8 segments, each side of the segments would be cut at 22.5-degrees. To achieve this twisted effect, you simply leave one side at 90-degrees and cut the other sides at 45-degrees. When the segments are squeezed into a round ring, they will slightly rotate and create this type of effect. Hope that all makes sense.

 

[tom daniels]

Thanks for all the help. I think I understand the concept now . and thanks for the link that was just what I was looking for plus found another forum to look at.

 

[George Guadiane]

Unless I'm mistaken:

Unless I'm mistaken, I think this is what I call an "OATS" Off Angle Triangle Stave segmenting.
I posted a line drawing of a top view of the layout a while ago:
http://www.aawforum.org/photopost/showphoto.php?photo=4228&ppuser=2575
There are several other pictures of pieces I have done with the blanks, including this one:
http://www.aawforum.org/photopost/showphoto.php?photo=3624&ppuser=2575
The bowl was done with the scrap from the hollow form.

Hope this helps

 

[George Guadiane]

try this link to "turned by george"

check out his segmenting gallery page they look similar

i believe he(or maybe someone else) posted here a few years ago

but couldn't find that info.

http://turnedbygeorge.com/id66.html

IAN

Ian,
I obviously didn't read all the way down before making my initial post.
Thanks for the shout out!
G