Bonny Doon Anticlastic Split Ring Forming Die Set – Sizes 5–11

Create smooth, dimensional anticlastic rings with the Bonny Doon Anticlastic Split Ring Forming Die Set. Designed for controlled ring forming, this specialized die set provides 12 mm and 20 mm forming radii and accommodates U.S. ring sizes 5 through 11.

The split-die system supports the ring during forming, helping create consistent anticlastic curves while minimizing unwanted kinks and distortion. With two different forming radii, you can choose between tighter or broader curvature to complement different ring designs and proportions.

Designed for jewelers, goldsmiths, silversmiths, and metalsmiths, this versatile set provides a repeatable way to create distinctive three-dimensional ring profiles.

Features & Benefits

• Designed specifically for anticlastic ring forming
• Accommodates U.S. ring sizes 5–11
• Includes 12 mm and 20 mm forming radii
• Two radii provide options for different anticlastic profiles
• Split-die design supports the ring during forming
• Helps create smooth, consistent dimensional curves
• Helps reduce unwanted kinks and distortion during forming
• Includes 3 sleeve/forming dies per width
• Ideal for custom rings, dimensional jewelry, and production work
• Organized in a compact storage box
• Designed for professional jewelers and serious metalsmiths
• Made in the USA

Specifications

Create Dimensional Anticlastic Rings

Anticlastic forming creates compound curves that move in opposing directions, giving metal a distinctive flowing, three-dimensional profile.

Applied to ring making, the technique adds curvature across the width of the band as well as around the finger. The result can be a sculptural ring with greater depth, movement, and visual interest than a conventional flat or simply rounded band.

The Bonny Doon Split Ring Forming Die Set provides purpose-designed forming surfaces for creating these distinctive ring profiles.

Two Forming Radii

The set includes both 12 mm and 20 mm forming radii, giving you two different curvature options for your designs.

12 mm Radius

The 12 mm radius provides a tighter forming curve for designs that call for a more pronounced anticlastic profile.

20 mm Radius

The 20 mm radius provides a broader, more gradual curve for a gentler anticlastic form.

Having both radii available makes it easier to choose a profile that complements the width, proportions, and style of the ring you're creating.

Ring Sizes 5–11

The die set accommodates U.S. ring sizes 5 through 11, providing a useful range for custom and studio jewelry production.

This size range makes the set suitable for:

• Custom rings
• Fashion rings
• Sculptural rings
• Statement rings
• Made-to-order jewelry
• One-of-a-kind designs
• Small production runs
• Coordinated jewelry collections

Split-Die Design

The split-die system supports the ring as the anticlastic profile is developed.

This controlled support helps the metal form more consistently and reduces the likelihood of unwanted kinks or irregular bending. For jewelers working toward smooth, repeatable dimensional profiles, the dedicated die system offers an efficient alternative to developing the entire form freehand.

Consistent Results for Custom & Production Jewelry

Consistency becomes especially important when creating related pieces or reproducing a successful design.

The defined forming radii provide repeatable working surfaces, making this set useful for:

• Matching designs
• Small production runs
• Repeat customer orders
• Sample collections
• Rings offered in multiple sizes
• Custom jewelry production

You can return to the same forming radius when recreating a design, helping maintain a consistent profile across multiple pieces.

Designed for Creative Ring Making

The combination of two radii and a size range from 5–11 provides plenty of room for design exploration.

A tighter curve can give a ring a more dramatic sculptural character, while a broader radius creates a softer transition across the band. Changing the width, proportions, and anticlastic radius can produce noticeably different finished designs.

This makes the set useful for both established ring styles and experimentation with new dimensional forms.

Ideal for Jewelry Studios

The Bonny Doon Anticlastic Split Ring Forming Die Set is an excellent choice for:

• Ring making
• Anticlastic forming
• Dimensional jewelry
• Sculptural jewelry
• Custom jewelry fabrication
• Goldsmithing
• Silversmithing
• Metalsmithing
• Professional jewelry studios
• Jewelry schools and workshops
• Advanced jewelry makers

Organized Storage

The set comes in a compact organizer box, keeping the dies together and easy to identify at the bench.

Organized storage is especially useful for a multi-component die set, helping keep the matching pieces together and ready for the next project.

Frequently Asked Questions

What is this die set used for?
The Bonny Doon Split Ring Forming Die Set is designed for creating anticlastic rings with dimensional, opposing curves.

What ring sizes does the set accommodate?
The set covers U.S. ring sizes 5 through 11.

What forming radii are included?
The set includes 12 mm and 20 mm anticlastic forming radii.

What is the difference between the 12 mm and 20 mm radii?
The 12 mm radius creates a tighter curve, while the 20 mm radius provides a broader, gentler anticlastic profile.

What is an anticlastic ring?
An anticlastic ring has compound curvature, with the metal developing opposing curves that create a flowing, three-dimensional profile across the band.

Why use split dies for ring forming?
The split-die design supports the ring during forming, helping develop a smooth, consistent shape while reducing unwanted kinks and distortion.

How many sleeve/forming dies are included?
The set includes three sleeve/forming dies per width.

Is this useful for making rings in multiple sizes?
Yes. The size 5–11 range makes the set useful for custom work, made-to-order rings, and jewelry collections offered in multiple sizes.

Does the set include storage?
Yes. The components are supplied in a compact organizer box to keep the dies together at the bench.

Where is the die set made?
The Bonny Doon Anticlastic Split Ring Forming Die Set is made in the USA.

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