Fretz Stakes for Jewelry Forming: Concave vs. Convex
By Pepetools - Precision Engineered Professional Equipment | Published: 2026-10-28
Category: Buying Guides
Compare the Fretz Small Concave Stake and Convex Fluting Stake to choose the right jewelry forming stake for your project.
Quick Answer
For closing concave or anticlastic shapes with a planishing hammer, choose the Fretz Small Concave Stake; for sharpening flutes after doming, choose the Convex Fluting Stake.
Concave vs. Convex: What Each Stake Does
The Fretz Small Concave Stake is designed with one riser side ground down so a standard planishing hammer can reach inside concave or anticlastic forms. This makes it ideal for shaping and closing curved pieces without distortion.
The Convex Fluting Stake, in contrast, is part of a progressive set used after forming with a doming stake. It sharpens the high points of flutes, bringing relief into sharper definition. The F-2B is the medium/sharp option, measuring 75 x 14.5 mm.
Material and Build Quality
Both stakes are made from 420 hardened stainless steel, ensuring durability and a precise working surface. They are specially crafted for jewelers and miniature work, so you get reliable performance even on small pieces.
Stake Holder Compatibility
Neither stake includes a holder; you will need to purchase a separate stake holder. Many jewelers use a universal stake holder or a bench pin with a compatible hole. Ensure your holder can accommodate the shank size of these stakes.
Decision Rules for Choosing Your Stake
- Project Type: If you are closing or shaping concave or anticlastic forms, choose the Small Concave Stake. If you are sharpening flutes after doming, choose the Convex Fluting Stake.
- Hammer Compatibility: The Small Concave Stake works with a standard planishing hammer. The Convex Fluting Stake does not require a special hammer, but you will use it with your forming hammers. Check your hammer types before purchasing.
- Progression Stage: Use the Convex Fluting Stake after forming with a doming stake, as part of a progressive series. The Small Concave Stake can be used at any stage when you need to close a curve. Plan your forming sequence to know which stake you need first.
- Stake Holder: Both stakes require a separate stake holder. Verify that your holder fits the shank of the stake you choose. If you don't have a holder, add one to your order.
Product Facts
- Small Concave Stake / 1 ¼ “ or 32 mm Long - Fretz, M-106A: The M-106 Small Concave Stake has one riser side ground down to allow a standard planishing hammer to be used. This design lets you work on concave or anticlastic shapes without the hammer hitting the stake, giving you cleaner forming results.
Small Concave Stake / 1 ¼ “ or 32 mm Long - Fretz, M-106A - Convex Fluting Stake, Medium/ Sharp 75 x 14.5 mm Fretz, F2B: The F-2B Convex Fluting Stake is the second in a progression to form concave flutes, bringing high points into sharper relief. It is essential for defining crisp flutes after initial doming, giving your work a professional, sculpted look.
Convex Fluting Stake, Medium/ Sharp 75 x 14.5 mm Fretz, F2B
Who Should Choose Which
Best For
- Jewelers forming concave or anticlastic shapes with a planishing hammer
- Metalsmiths creating sharp, defined flutes after doming
Not For
- Those needing a stake for flat or convex raising
- Projects that require a stake with a built-in holder
