Roof Shingles, Roofing Shingles & Timber Shingles explained here

Anti-kickback fingers

Anti-kickback fingers are standard safety equipment on most new table saws. The anti-kickback fingers are incorporated into the blade guard and prevent the stock from being thrown at the operator by biting into it when kickback occurs. As long as the stock if fed through the blade in a normal fashion the anti-kickback fingers don't come into play. It is only when the stock binds and kickback occurs that they are important.

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Timber Shingles and Shakes

A home clad with timber shingles

A shingle, generated from a sawn piece of timber is characterised by its relatively smooth face and back, while in contrast a shake, essentially a split piece of timber, is dominated by a strongly textured surface.

Overview

Timber shingles and shakes provide eye-catching and practical forms of timber cladding for roofs and walls, across domestic and commercial structures throughout the world. Most shingles and shakes used in Australia are made from western red cedar and are imported from Canada. Some are also produced locally from species such as rose sheoak and hardwoods.

Australian producers generally follow the set standard sizes adopted in North America for western red cedar shingles and shakes. Widths are generally random, with only length and butt thickness specified. The table below provides standard sizing for western red cedar shingles.

Length (mm)	Thickness (mm)
400	10
450	11
600	13

Timber shingles and shakes most commonly appear on roofs as cladding. While they are typically applied in straight single courses, this can be varied to achieve other more decorative effects. Detailed information about the construction of shingle clad roofs is best sought from individual suppliers.

When applied to walls, shingles and shakes are generally fixed over solid or spaced sheathing. 9mm or thicker exterior grade plywood provides a smooth, even base for fixing. The inherent strength of plywood also offers the added benefit of giving increased structural rigidity to the building.

For long term durability shingles and shakes can be dipped in a water repellent preservative formulation prior to installation. On roofs they are often given no further treatment and will subsequently weather to a soft silver-grey tone. On walls, where access for maintenance may be easier, pigmented stains are often used to retain a natural looking colour.