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Sep.

How to Figure Out Your Knuckle to Finger Differential for Rings

By Calla Gold

How to Measure Your Knuckle to Finger Differential

How to Measure Your Knuckle to Finger Differential

The Heartbreak of an Ill-Fitting Ring

Do you have rings that spin? Rings that Flop? Rings that jab you because they aren’t in the right position?

Do you tend not to wear those rings much? What if it’s your wedding ring? What?!? You’re not wearing your wedding ring?

Knuckle to Finger Differential

Flopping Rings Fail to Create that Effect of Effortless Beauty They Were meant to

This is For the Girls With the Big Knuckles

As a large knuckle and spinning ring problem solving jeweler, I decided to share in this blog some of the advice I’ve shared with my clients.

The first step is to get your Knuckle to Finger Differential measured. I’ll cover that in a couple minutes. There is a video at the end of the post showing how to determine your knuckle to finger differential yourself.

Since the style of your ring can contribute to a spinning ring, I’ll address that first.

Knuckle to Finger differential

This Ring was Born to Spin. That’s Why We Put in a Butterfly Spring.

Some Rings Were Just Born to Spin 

Joan couldn’t wear this ring comfortably to save her life. And yet none of her other rings needed help to sit properly on her fingers.

Joan was not a candidate for spinning ring solutions on any of her other rings. Just this one. And yet she loved it. So we put a butterfly spring onto it to stabilize it on her hand. Now she wears it in comfort and gets the compliments, because a stand up big gem ring is quite an eye catcher!

Some rings by their top heavy design tend to flop around. Their design demands that you  do something beyond sizing it smaller (which won’t handle the problem anyway) to get it to fly right.

Engagement Ring Hand Engraved with Speed Bumps

Speed Bumps Can Help Arrest the Spin of Your Ring if Your Knuckle to Finger Differential is Not too Great

The Three Possible Solutions for Taming Spinning Rings

There are three basic possible solutions to spinning, flopping rings. They are covered in my, “Big Knuckles, Spinning Ring Solutions” Series:

1. Ring Spin or Ring Flop…One Possible Solution – Speed Bumps

2.  Big Knuckles and Spinning Rings? Try the Butterfly Spring!

3. Finger Mate Hinging Shank for Rings for Enlarged Knuckles

Knuckle to finger differential

A Flexible Inner Spring, the Butterfly Spring, Helps Hold a Ring Upright for Those With a Larger Knuckle to Finger Differential

What Determines if I need Speed Bumps, a Butterfly

This Client Has a Three Size Knuckle to Finger Differential as Figured Out With my FingerMate Flexible Sizer

This Client Has a Three Size Knuckle to Finger Differential as Figured Out With my FingerMate Flexible Sizer

Spring or a Hinging Shank?

The first thing you need to know is your knuckle to finger differential. It is the difference in finger size between your knuckle and the finger area between your knuckle and the palm of your hand. Or as I call it, the area behind your knuckle.

The bigger the differential, the more active a solution you need. The numbers of the solutions are in order of effectiveness.

The #1 Speed Bumps, help a bit, and sometimes that’s all you need.

The #2 Butterfly Spring, helps more than speed bumps, but isn’t as awesomely hardcore a solution as the hinging ring shank is.

Hinging Shanks are the Cadillac of Ring Spinning Solutions

Hinging Shanks are the Cadillac of Ring Spinning Solutions

The #3 Hinging Shank helps a ton, but it could be overkill if you don’t have that much of a knuckle to finger differential. It also costs a lot more!

The other determining factor is the design of your ring. If your ring is very top heavy then you may need a more heavy duty solution on that ring than if you have an lower-to-the-hand design.

multi sizer

This Multi-Sizer is Flexible and Allows You to Measure for Yourself When at a Distance From Your Jeweler

How is Your Knuckle to Finger Differential Measured?

It Goes Flat for Easy Mailing

It Goes Flat for Easy Mailing

I like to use a flexible finger measurer. The normal hard metal ring sizers (Pictures of metal ring sizers) can only measure your knuckle and not the area behind it.

When I visit a client in person, I use the FingerMate sizer, which allows the finger  area behind the knuckle to be measured properly as well as your knuckle.

Like a Belt, This is a Flexible Ring Measurer

Like a Belt, This is a Flexible Ring Measurer

See below for my how to video that shows how you can use the Multi-sizer which can be mailed to you to determine your knuckle to finger differential if you are at a distance from your jeweler.

Video of How to Figure Out Your Knuckle to Finger Differential


 

Your Big Knuckle, Spinning Ring Solutions Jeweler,
Calla Gold

Big Knuckle Blog Round Up

Ring Spin or Ring Flop…One Possible Solution – Speed Bumps

Big Knuckles and Spinning Rings? Try the Butterfly Spring!

Solving Spinning Stacking Ring Problem with Speed Bumps

Finger Mate Hinging Shank for Rings for Enlarged Knuckles

How to Figure Out Your Knuckle to Finger Differential for Rings

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10 Responses to “How to Figure Out Your Knuckle to Finger Differential for Rings”

Patricia Schwartz October 4th, 2014 at 4:57 pm


Thank you for the informative blog post! Did you invent the term knuckle to finger differential? Do other jewelers figure this out for people? Lately I have noticed that some of my rings spin a bit, but they are still tight going over the knuckle. I’d like to find out what my finger knuckle differential is. I’d also like to share this with my mother. She rarely wears rings these days and I suspect it is because they spin around on her. Which is too bad because she’s loved jewelry as long as I’ve been noticing.

Calla Gold October 5th, 2014 at 5:38 am


Dear Patricia,
There are some jewelers who certainly do figure out the knuckle to finger differential. Specifically the makers of SuperFit hinging shanks and FingerMate hinging shanks. And the jewelers who install these wonderful solutions on people’s rings.
I did come up with the phrase.
I hope to help you and your mom in the future.
Your Personal Jeweler,
Calla

Amy Marie Orozco October 20th, 2014 at 4:01 pm


Knuckle to finger differential! If only algebra problems had been this interesting. See, this is why it’s so important to have a personal jeweler.

Calla Gold October 21st, 2014 at 7:27 pm


Hello Amy,
So that’s why I’m a personal jeweler, because I so sucked at algebra? Seriously I learn way better with examples and stories too.
I like figuring things out and explaining things. This is a fun part of being a Personal Jeweler, blogging!
I’m glad you liked finding out how to figure out your knuckle to finger differential.
Your Personal Jeweler,
Calla

Judith Gerhart October 21st, 2014 at 4:42 pm


Ingenious describes these slippery, spinning ring solutions. I know so many people will want to take advantage of these techniques. I thank you for sharing the possibilities.

Calla Gold October 21st, 2014 at 6:03 pm


Thank you Judith! It seems that each time I deal with one of these spinning ring problems the response is so great. It means a lot to me to be able to take an many years unworn and spinning wedding ring and put a spring or hinge in it to make it wearable again.
Happy Solutions Jeweler,
Calla

Shannon McKenna January 3rd, 2015 at 11:46 am


Calla,
As someone with a fairly large differential of my own, I’m familiar with this problem! I spent a long time looking up solutions online for my ring. I actually never did see it explained as well as you did, though, in terms of which of the solutions that are best for smaller vs. larger differentials. Thanks for writing this post on it!
~ Shannon

Calla Gold January 3rd, 2015 at 12:57 pm


Dear Shannon,
I’m so pleased that my explanation was helpful to you. The knuckle to finger differential is important to understand in order to figure out the best solution to spinning rings and other ring misbehaviors!
Your Personal Jeweler,
Calla

Nettie February 22nd, 2016 at 2:38 pm


I take it this has to be done by a jeweller. Does this take long and is it an expensive procedure?

Calla Gold February 24th, 2016 at 7:35 am


Dear Nettie,
This can be done in your home if you have the flexible sizer shipped to you. Or if your jeweler has a flexible ring finger measurer.
Figuring out your knuckle to finger differential isn’t the expensive part, the solution selected and the work done to make your ring comfortably wearable is the expensive part.
Each solution is priced based on how the ring itself is made and which solution is the best choice.
Your Personal Jeweler,
Calla

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