3990 nr. 4 Tower jaws for the Stronghold chuck
3990 Tower jaws for the Stronghold
Tower jaws like this one (3990) are made to clamp long work such as a vase, for example. The 3990 is the largest size tower jaws for the Stronghold chuck with ribbed insides. These ridges squeeze into the wood and provide a firm grip. At the end of the jaws, the steel on the inside extends into a dovetail so you can also use it for a shorter workpiece, this again saves changing jaws.
types of jaws
Manufacturer Oneway from Canada has several types of jaws.
- Dovetail jaws. (Dovetail, smooth) Precise grip on scales, for example. Work best on 1 specific diameter, namely when the jaws together exactly form a circle.
- Serrated jaws (Serrated) The ridges grip into the wood. Work best on 1 specific diameter, i.e. when the jaws together form exactly a circle.
- Ribbed and profiled (Premium Profiled) The jaws are not round on the inside but are profiled in such a way that square wood or other shapes can also be clamped well. The jaws are ribbed.
- Tower jaws are high jaws, made to hold long workpieces. Tower jaws are available both "premium profiled" and "serrated".
If you want advice on which jaws to use, take a look at this video. This link starts at the section on jaws.
sizes
For the sizes of all available jaws, see this table
types of chucks
Oneway produces 3 types of square jaws. The Stronghold, the Talon and the Oneway. The jaws for the Oneway and the Talon are interchangeable. The Stronghold square jaw has its own series of jaws.
No Specifications