Greetings.  I am very new to Blender.  (I've used Lightwave, Amorphium, Hash: AM) I would like to make some core "rings", as in jewelry.  2 or three widths with several risers for stones, filigre and signets.  My first "challenge" is that I can't seem to figure out how to make the inside flat to go against the skin of the finger.  Granted it wouldn't make a difference once it's on the model, but it would give the rings more realism.  Any help would be appreciated.  By the way ... treat me like a bright "child" since the program is VERY new to me.  :)

     Here is examples of the signet model I'm interested in making so I can customize it using displacement mapping for models for Poser.  

Sincerely
Boni

Samples from Dexter rings and all designs on this post is copyrighted from Dexter, no infringement intended, used for example only.

Attached Link: http://www.renderosity.com/mod/gallery/index.php?image_id=1389847&member

For the ring (linked) in my gallery, I created a nurbs torus and just grabbed the nurb controlling the inner ring and expanded it out (if this sounds too complex just scream and I'll try to explain better). The ring you've shwon looks a little sharper then that and I would be tempted to use a boolean method (even there is a tube object available).

1. create a cylinder that will end up as the main part of the ring (hit tab to switch to object mode)
2. scale it down along it's length only ( so if you added the cylinder such that it's length is in the x axis, press s to scale and then press x to limit the scale to x only)
3. Add and apply a simple subsurf to the cylinder.
4. switch back to edit mode and extrude some faces out to product the face of the ring
5. create a cylinder that will 'cut out' the middle of the ring - scale and position it as appropriate
6. make sure you're in object mode.
7. select the cut-out and then shift right click to select the ring too
8. on the menu select object-boolean and choose difference.
9. you will now have the base ring to tweak a little further...

In the image I created the grey cylinder and extruded out the bit for the ring body (1-4) above. I then created the cut out (red) cylinder. and did the boolean leaving the red ring as shown ready to tweak. 

As I mentioned another way to consider is starting with a tube - converting from nurbs to mesh and then doign the extrude and tweaking - there are so many ways to do this I've tried to choose the easiest for a newb.

This is very interesting ... a couple of questions ... and thank you for your help by the way.  This is wonderful.  You have done a beautiful job on the diamond ring.  :)

Oh, questions on the image you supplied:

1. How to "round" the corners both concave (where the signet meets the ring) and convex (the outer edges of the signet?).
2. How to flatten the signet section as it is in the photos in my post?

Other questions:

1. since it is a boolean function, (using the cylinder as a negative boolean) would it be exportable as an object  for use as a Poser prop? The reason I ask is other programs I've used with boolean capabilities weren't able to export the objects in other formats. (Bryce and Vue).

2. Would I be able to flatten out the interior of the torus that comes with Blender to acheive the same effect although the signet section would still illude me at that point.

:) thanks :)

Boni

Quote -

1. since it is a boolean function, (using the cylinder as a negative boolean) would it be exportable as an object  for use as a Poser prop? The reason I ask is other programs I've used with boolean capabilities weren't able to export the objects in other formats. (Bryce and Vue).

Yes you will.  It alters the mesh.   Make sure you save it before you do it though.  It didn't always turn out the way I wanted it too the few times that I've tried using boolean functions.  It took some trial and error.

Red

Thank you ... I thought it would since it is a true modeling program.  But I'm a little cautious.  the User interface is ... rather daunting compared to the other programs I've used.  I do want to master it though since it does promise a lot of power and capabilities.  Hopefully by the end of the year I'll be making jewelry for sale here at Rendo for Poser models.  :)

Sincerely
~ Boni ~

Once you start to learn how things are done in Blender, you'll be happily surprised at how much you can do. 

Good luck!
:)

Red

Hi Boni, sorry didn't have the chance to get back to this. 

With the basic shape produced by the previous operation (in the image I posted before the red ring). You can select that mesh and edit it more, so just enter object edit mode and grab and move some of the vertices around to get the shape closer. To flatten the top of the signet I would select top view, grab vertices and adjust until they'r flat. To get the chamfered edges, try a sudbdivide or I think there is a chamfer pyrthon script around...