Solving the Blender Sizing issues for Rings!

Every once in a while, you have to design a ring based on a specific gemstone size, shape or style.  You’ve seen the previous video tutorials where we create rings, and when we size them, the size of the stone set will change.  Lets take some time and solve this problem.

Working with a Gemstone Size or Shape!

Practical experience in the jewelry industry is that when you design a ring, pendant or other item for a customer, they will have already set their heart on a stone type, shape and size.  It is important to work with that, and create a design that the customer wants.

Often, we can get Findings from manufacturers that fit the shape and size of just about any stone.  Sometimes, however, we get into a bind when the customer says that they do not want something out of the box, they want a one of kind item.  This is also true, for example, if you are creating a ring, and you want the ring to be cast in multiple finger sizes, but retain the size and shape of the stones.

Believe it or not, this is not that complicated, and let’s show you how… Check out the video below…

keeping the head detached!

I’m hoping that you were able to watch the entire video.  It isn’t that long, but the main focus of the tutorial is to make sure that the head you are working with is kept detached from the body or shank of the entire ring, until you are ready to 3d print it for casting.  

In this example, I used a standard size 5.5mm princess shape stone.  I added a square head, and sized it to fit the 5.5mm stone for the upper part of the ring.  The next part was importing a plain band.  You could also create one of your liking and use that.

This would be similar to what many jewelers do, especially when dealing with standard size gemstones.  We will often order out of a book and do the final assembly using those standard items like heads, shanks and other findings.

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Custom Stones and what we learned!

So, yes, out of the box items work for standards. Try to imagine that in this video tutorial, we where working with an odd shape stone, and one that the customer brought to us.  We would spend the time working on the head design first.

It is important that the way you mount the gemstone is figured out in advance, because if you are working with non standard gemstones, like black opal, you would need to get that part of the ring done well in advance of designing the shank.

Is it easier to make a one of a kind?  Well, I find that it is much easier.  If I’m working on an item for a customer, and they hand me some special gemstone to work with, I would much rather focus on making one item.  The design process of taking that design, and changing it constantly, may not work well, especially if I don’t have the same shape of gemstone to work with.


See all the tutorials in this series…

Stone Setting Tools
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Final assembly!

As you watched in the video, I did not join the objects together, until the end when I was ready to export it out as an slt file for 3d printing.  This is important, and I’ll cover that here.

First, we had a specific gemstone size and shape.  We had to either create or import a head or setting for the stone, specifically designed to fit it.  Finally, we have to work, in this case, with the shank design.  The final style we can choose after making all of your changes to it.

It is at this point, that I will save the file, as a Blender file, not as an object or stl.  Saving the entire project as a blender file, with all the internal objects separated allows me to come back in the future, make changes and modifications and them 3d print a final object again.

We’ve saved our file to a Blender File!

Not that it is saved, the objects are still separated, we can join them together.  In this example, there are only two different objects.  The head, which we know matches the stone size and shape we are working with.

The ring shank is the second item, and that may have been completely designed, or imported and modified.  That is entirely up to you, but you can see that all I did was to make a few modifications to the shank itself.  Once I’m happy, then I’ll save the blender file again, but maybe using a different file name.

At this point, you should select the head and the shank.  First select the head, hold the shift key down, and select the ring shank.  This allows us to select multiple objects.  Once that is done, there are two ways to join the objects.  Using Ctr-J, will join them together,  Some of the modeling changes will be visible and may alter the apearence of the full ring design, but not by much.  You can always use Ctrl-Z to undo your join, or on a mac, Command-Z.

The second way is to use the boolean tools, click here to follow the boolean tools tutorial if you have not already followed that.

Once you have joined the parts of the ring together, you can use the Export tool to save the ring out as an stl file for 3d printing.  Make sure that you put a checkmark in the box listed as “selected only”  

3 Stone Head 3d Model to be used in your...
Gem sizes vary from 0.2ct to 3ct. 70-80 pieces per...
Gemstone :- Green Moissanite Carat Weight :- 2.20 Ct. Measurement...
Gemstone :- Green Moissanite Carat Weight :- 1.50 Ct. Measurement...

It is that easy?

Yes, as you can tell, this was not a complicated tutorial.  However, keep in mind that as we work with multiple stones, of different sizes or shapes, we can make our designs very complicated.  

Just remember that very complicated designs are usually what the customer wants, and working with these becomes much easier over time.  In the course of 90 days, I mastered 99% of the features I needed to use to make some very complicated items for my customers, and that is an education that no one can take away from me.

Good luck guys, let me know if you have any questions.

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