Rip Saw: a Hand Saw Filed with Upright Teeth and Little Set (Cassell's Cyclopaedia, 1904)

A rip saw cuts along the grain, so its teeth work like a row of small chisels, not like the knife points of a cross-cut saw. Cassell's Cyclopaedia of Mechanics (1904) says how to file one: the fronts of the teeth perfectly upright, the faces given a transverse bevel of only 3 to 5 degrees (the file held at 85 and 95 degrees), and only a little set, less than a cross-cut saw needs. It gives no tooth size, back angle or amount of set; those are unknown here. Source: P. N. Hasluck (ed.), Cassell's Cyclopaedia of Mechanics vol. V (1904), p. 73, Setting Saw Teeth. Picture: our diagram.

中级

An hour

说明

Read Cassell's

"The teeth in a rip saw should be so filed that their fronts will be perfectly upright. A transverse bevel of from 3° to 5° should be given to the faces of the teeth."

Clamp the saw

Clamp the hand saw in the vice with its teeth just above the jaws, so the blade cannot chatter under the file.

此步骤所需材料：

木工锯1 hand saw

所需工具：

台虎钳

File the teeth upright

File each tooth so its front stands perfectly upright to the line of the teeth. Hold the file at 85° to the blade for one side and 95° for the other, to give the faces a transverse bevel of about 5°; 3° is the least. File alternate teeth from one side, then turn the saw and file the others. Tooth size and the slope of the backs are not given (unknown).

所需工具：

锯齿锉

未知尺寸

Set lightly and evenly

Set the teeth alternately left and right with the saw set, the same amount on each side. A properly ground ripping saw needs only a little set, less than a cross-cut saw; how much depends on the timber, the thickness of the blade and how it is ground (not given, unknown).

所需工具：

锯齿拨料器

未知尺寸

History and honest limits

On the same page Cassell's gives the other hand saws: a cross-cut saw's fronts recline about 10° and need a keener edge, a tenon saw is filed much like a hand saw with less bevel, and a panel saw, used both ripping and cross-cutting, like a mitre saw. Tooth size, back angle and amount of set are not given; the saw is a hand saw refiled for ripping.