Tooltos 2-in-1 Ring Stretcher Expander and Reducer | HK Size 1-33 Jewelry Repair Machine
- 99 in stock
Description
- 2-in-1 Expander and Reducer — Expand rings using the 6-segment spline mandrel (HK sizes 1–33) and reduce rings using 8 reduction dies (14–23mm) in one machine.
- HK Size 1–33 Expanding Range — Numbered mandrel segments cover a wide range of ring sizes for expanding plain bands and coin rings.
- 8 Reduction Dies Included — Sizes 14 / 15 / 16 / 18 / 19 / 21 / 22 / 23mm for reducing ring diameter to fit smaller sizes.
- Cast Iron Body and Steel Components — Heavy-duty construction for stable, consistent operation during ring resizing work.
- Bench Mountable — 4 pre-drilled holes for secure workbench installation.
- Reversible Base Plate — Switch between expanding and reducing functions without additional tools.
The Tooltos 2-in-1 Ring Stretcher Expander and Reducer handles both ring expansion and ring size reduction in a single cast iron machine. The 6-segment spline mandrel covers HK sizes 1–33 for expanding plain bands and coin rings, while the 8 reduction dies (14–23mm) allow ring size reduction without a separate tool. Suitable for jewelry repair shops, goldsmiths and silversmiths working with gold, silver, copper, brass and other non-ferrous metal rings.
Best For / Not For
| Best For | Not For |
|---|---|
| Plain band ring expanding and reducing Coin ring sizing and adjustment Gold, silver, platinum, copper and brass rings Jewelry repair shops and goldsmiths Ring sizes HK 1–33 (expanding) Ring reduction up to 23mm diameter |
Stone-set rings (risk of damaging settings) Steel or titanium rings Rings requiring reduction beyond 23mm Rings requiring expansion beyond HK size 33 |
Technical Specifications
| Material | Cast Iron Body and High Carbon Steel Components |
| Expanding Range | HK Size 1–33 (6-segment spline mandrel) |
| Reduction Die Sizes | 14 / 15 / 16 / 18 / 19 / 21 / 22 / 23mm (8 dies) |
| Machine Dimensions | 135 × 185 × 420mm |
| Machine Weight | 9.6 kg / 21.2 lb |
| Bench Mounting | 4 pre-drilled holes |
| Base Plate | Reversible (expander / reducer) |
| Suitable Metals | Gold, silver, platinum, copper, brass and other non-ferrous metals |
Workshop Applications
| Application | Description |
|---|---|
| Ring Expanding | Expand plain gold, silver or platinum bands to larger HK sizes using the 6-segment mandrel |
| Ring Reducing | Reduce ring diameter using 8 reduction dies from 14mm to 23mm |
| Coin Ring Sizing | Size and adjust coin rings to fit using the expanding mandrel |
| Jewelry Repair | Resize customer rings in jewelry repair shops without sending out for sizing |
Pro Tips
- Anneal the ring before expanding or reducing to reduce the risk of cracking, especially for work-hardened metals.
- Expand or reduce gradually in small increments — avoid forcing the ring to the target size in a single pass.
- Mount the machine securely to your workbench using the 4 pre-drilled holes for stable, controlled operation.
- Inspect stone-set rings carefully before resizing — if in doubt, remove stones before expanding or reducing.
Frequently Asked Questions
Can I use this on stone-set rings?
Use caution. Expanding or reducing rings with set stones risks damaging the settings. For stone-set rings, it is recommended to remove stones before resizing where possible.
What ring sizes can this machine expand to?
The 6-segment spline mandrel covers HK sizes 1–33 for ring expansion.
What sizes can the reducer handle?
The 8 reduction dies cover 14 / 15 / 16 / 18 / 19 / 21 / 22 / 23mm ring diameters.
Can this machine work on titanium or steel rings?
No. This machine is designed for non-ferrous metals — gold, silver, platinum, copper and brass. Titanium and steel rings require specialist equipment.
Does it need to be bolted to a bench?
Strongly recommended. The machine has 4 pre-drilled mounting holes. Secure bench mounting ensures stable, controlled operation during resizing.
Is this suitable for coin rings?
Yes. The expanding mandrel is commonly used for sizing and adjusting coin rings across the HK 1–33 size range.
What's Included
- 1 x Tooltos Ring Stretcher Expander and Reducer Machine
- 1 x Reduction Die Set (8 dies: 14–23mm)
- 1 x Control Lever
Support
For technical questions or order support, contact the Tooltos team at sales@tooltos.com. We typically respond within 24 hours.
