Chuck holders, gravers, saw
TAIL STOCK CHUCK HOLDER
This device is used to hold regular wire chucks in the tail stock. This is desirable when drilling so as to hold the drill in direct line with the work.
THREE JAW CHUCK
This chuck is used for heavier kinds of work. The jaws are adjustable and reversible. This chuck can be used for holding clock barrels and work by model makers.
This is a special chuck used primarily for holding bezels, either by the inner or outer edge.
This lathe attachment is used to mount watch parts, such as plates, for uprighting a pivot hole. The jaws are adjustable, which allows free movement of the plate to any desired center.
The tools used for cutting on the lathe are known as gravers. They come in many shapes and sizes. The gravers most commonly used are the #4 or #6 square. It is essential that gravers be kept sharp.
Gravers may be sharpened by hand, but it takes considerable experience to get the right result. An easier and more convenient method is to use a graver sharpener, which holds the graver in a fixed position during the sharpening process. The tool may also be used to shape the tip on a new graver or to reshape a broken tip. Engravers may likewise use this tool.
For sharpening gravers, a combination oilstone with coarse and fine sides is recommended. Kerosene or light machine oil should be used on the stone at all times.
CARBOLOY GRAVER SET
This carboloy steel graver set is used on hardened or tempered steel, as when cutting out balance staffs from the balance wheel. When the gravers need sharpening, they must be ground on a special diamond-impregnated wheel. A set usually includes blades, handle, lap wheel, and compound.
This slip is a hard, almost grainless wood used to polish pivots. Polishing compound, such as diamantine or rouge, is applied to the slip. Full explanation of the use of the boxwood slip will be found in Lesson 31, Master Watchmaking.
This tool is used to burnish a pivot, remove burrs and so forth. It is a very hard steel with a slightly rough surface. No grinding or polishing compound is ever used on. this tool. When used as illustrated and described in Lesson 31, Master Watchmaking, it will compress, harden and close the pores in steel, thus giving it a smooth, hard and polished surface.
JEWELER’S SAW FRAME
A saw frame designed to hold saw blades that are used to cut metal.
JEWELER’S SAW BLADES
For use in jeweler’s saw frame. They are made of narrow, tempered, flexible steel wire into which teeth have been cut. The teeth in a jeweler’s saw should point toward the handle of the saw frame. The sizes are 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0, 5/0, 6/0, 7/0, 8/0. The most useful size to the watchmaker is No. 2.
These are small strips of wood covered with abrasive cloth or paper. They are graded from coarse to fine grit: 2, 1, 0, 2/0, 3/0, 4/0. They are used to polish steel surfaces by starting with the coarse buff and working to the fine ones.
All watchmakers will at some time need to harden and temper a piece of steel. The beginner will find it advisable to practice hardening and tempering steel to make pivots, etc. A small torch will usually supply enough heat to harden properly. The beginner may use any gas flame that will give sufficient heat.
This torch is ideal for use by the watchmaker or jeweler. It will produce a minimum heat of 2200 degrees F. It is equipped with a “throw-away” type of container which, holds a liquid gas under high pressure. Ordinarily the container should last a minimum of four hours of continuous use. The empty container is easily removed and replaced with a new one.
A threaded die plate with graduated hole sizes used in threading screws or making taps.
The Watchmaker’s Lathe
The watchmaker's lathe is the most versatile tool at his command. With the lathe and its attachments, all manner of work can be done, from delicate, precision fitting of parts to making a complete watch, if need be. It enables the watchmaker to handle repairs he might ordinarily have to
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