- 1/4" - 350 mm long. Fits into small (gold) grub or small (gold) quick head.
- 3/8" - 410 mm long. Fits into medium (blue) grub or medium (blue) quick head.
- 1/2" - 460 mm long. Fits into large (red) grub or large (red) quick head.
Each double-end bowl gouge has two grinds. One end is fingernail grind. And the other end is a traditional straight grind, making this tool a very versatile two-in-one tool.
It has long been understood that by subjecting metal tools to elevated temperatures and then rapidly cooling them, the properties of the metal can be altered. This happens because the crystal structure of the metal is altered to change the way the metal reacts when in use.
The two main crystals in tooling steel are the larger and softer austenite and the smaller, more stable martensite. Through heat treatment, we look to transform the austenite to marten site to produce steel with good wear characteristics and an amount of ductile properties.
When combined with a good quality heat treatment, the cryogenic process greatly enhances the austenic transformation. Also at these extreme temperature of -301F (-185C), fine ‘eta’ carbides are formed within the carbon structure. Growing very slowly and only at these very low temperatures, ‘eta; carbides are extremely small and act as a ‘filler’ between the other crystals in the metal.
The combined effect of the cryogenic processing is to produce a refined crystal structure in your hand tool that will give a lifetimes service by producing a blade that will retain its edge longer and give a superior ‘feel’ in use.
|350 mm, 410 mm, 460 mm
I like it
I got the large size to go with the Hope collet handle. I'm very pleased with both. The gouge came with a fairly standard grind at one end, which looked useful, but I found I couldn't reproduce it with my Oneway Varigrind jig. Because the gouge is so easy to remove from the handle, it lends itself well to platform grinding or freehand grinding. The other end has a very swept-back grind, which was not what I wanted, but it was easy to reshape. The gouge keeps its edge in use. Very happy with it (and the handle).
Excellent tool with the ability to hold a sharp edge far longer than ordinary High Speed Steel, with the added benefit of having essentially two tools in one.