Dovetails are typically either 45 degree or 60 degree. A dovetail cutter is an endmill whose form leaves behind a dovetail slot, such as often forms the ways of a machine tool.
What is the standard angle for a dovetail?
Answer from the experts: Clearly, there’s no shortage of advice about the “best” dovetail angle: Some woodworkers recommend using 12° for “coarse work” and 7° to 10° for decorative joints.
What is the angle of a lathe dovetail?
Angles used on dovetails On large industrial scale machines the angle is usually 45º. For smaller dovetails the usual angle is 60º. Any less than this, i.e. 60° on a small machine, complicates the design of the adjustment mechanism. The angle produced is set by the dovetail cutter used.
What is the best angle for sliding dovetails?
Percy Blandford, who has been writing about woodworking for a long time, writes in “The Woodworker’s Bible” that any angle between 7.5° and 10° is acceptable. The ideal, he says, is 8.5° for softwoods and 7.5° when joining hardwoods.
What is the ratio of a dove tail?
Dovetail angles are usually expressed as ratios — the most common being 1:6 and 1:8 (said “one in eight,” and also written as 6:1 or 8:1). As a general rule of thumb: Use 1:6 for softwoods. Use 1:8 for hardwoods.
What is angle 1 to 8 dovetail?
A 1:8 ratio – one unit horizontal with eight matching units drawn vertical – is an angle of 7.1 degrees.
What is the angle of a dovetail for machine tools?
A dovetail joint is most commonly used in wood working but also in metal working as a way of creating a joint which is extremely strong. Dovetails are typically either 45 degree or 60 degree. A dovetail cutter is an endmill whose form leaves behind a dovetail slot, such as often forms the ways of a machine tool.
What is dovetail pitch?
There are different types of dovetail joints. The angle of slope varies according to the wood used, purpose of joint and type of work. Typically the slope is 1:6 for softwoods, and a shallower 1:8 slope for hardwoods. Often a slope of 1:7 is used as a compromise.
What angle should cutting tool be on lathe?
When machining steps, the main declination angle should be 90°, and the main declination angle should be 60° for workpieces cut in the middle. The main declination angle is generally between 30° and 90°, and the most commonly used are 45°, 75°, and 90°.
How deep should a dovetail joint be?
Typically we use 1 ½” – 2” deep dovetails that are about 2” less deep than the joist, and 4” less deep than the girt – but that is just a starting point – the loads and reactions have to be calculated from there.
What are the disadvantages of a sliding dovetail joint?
The disadvantages of dovetail joints are that they can be fairly difficult to mark out and cut, and if they are made badly these joints lose the advantages listed above. Depending on the project, function, and design, there are a number of different types of dovetail joints to choose from.
What are the rules for dovetail joints?
The ‘pins’ are the bits of wood between the tails so there are two half-pins; one each side. The general rule is that they measure half the thickness of timber plus around a mm, so the two dots on the shoulder line are 7mm in from each edge.
What is the ratio of tail to pin in a dovetail joint?
The line between that end point and starting point will be the angle of your tail and pin sides. 6:1 (9.5°) and 8:1 (7.1°) dovetail ratios are the most common (though you’ll often see 4:1 and 10:1 as well).
What size is a dovetail joint?
Dovetail Dado Wood Joints have joint widths of 2/3 and joint depths of 1/2. Wood joints are typically used in wood members with widths between 1.5”-3.5” (3.8-8.9 cm) and depths between of . 75”-3.5” (1.9-8.9 cm).
What is the shape of a dove tail?
A dovetail joint has a series of pins and tails in a trapezoidal shape and once glued a dovetail joint has no need for mechanical fasteners. Dovetail joints as a technique predate written history and have been found inside the tombs of ancient Egyptian mummies.
What is the slope of a dovetail joint?
There are different types of dovetail joints. The angle of slope varies according to the wood used, purpose of joint and type of work. Typically the slope is 1:6 for softwoods, and a shallower 1:8 slope for hardwoods. Often a slope of 1:7 is used as a compromise.
Is 11mm dovetail the same as 3 8?
The 11 mm dovetail has a 60-degree angle, while the 3/8” dovetail has a 45-degree angle.
How deep should a dovetail joint be?
Typically we use 1 ½” – 2” deep dovetails that are about 2” less deep than the joist, and 4” less deep than the girt – but that is just a starting point – the loads and reactions have to be calculated from there.
What is the difference between 11mm and 3 8 dovetail?
The 3/8 Inch is measured across the bottom of the dovetail whereas the 11 mm is measured across the top of the dovetail. A 3/8 Inch dovetail is about 12.7 mm across the top. The measurements 3/8 and 11mm are not the same for this reason plus the angles are different.
What is the minimum thickness for a dovetail?
Structurally I have looked for pin strength in dovetails as the dovetailed aspect is always strong because it is always at least as wide and mostly wider than the pins. In my own work I aim for a minimum size of 1/4″ and mostly 3/8″.
What is the difference between 11mm and 3 8 dovetail?
The 3/8 Inch is measured across the bottom of the dovetail whereas the 11 mm is measured across the top of the dovetail. A 3/8 Inch dovetail is about 12.7 mm across the top. The measurements 3/8 and 11mm are not the same for this reason plus the angles are different.
How many mm is dovetail?
Dovetails come in several different types and sizes depending on manufacturer, but the most common are the 11 mm and 3⁄8 inch (9.5 mm). Some other less known, but currently commercially available dovetail mounts, are 12, 13, 13.5, 14, 14.5, 16, 16.5, 17 and 19 mm.
How are dovetail cutters measured?
Overall length of dovetail router cutters The overall length of a cutter is measured from the top of the shank to the bottom of the cutting edges or guide (if there is one). Dovetail cutters range in length from 52mm (2″ approx.) to 80mm (3¼” approx.)
What is the angle of an end mill cutter?
End Mill Helix Angle A higher helix angle used for finishing (45°, for example) wraps around the tool faster and makes for a more aggressive cut. A lower helix angle (35°) wraps slower and would have a stronger cutting edge, optimized for the toughest roughing applications.
What ratio is a 14 degree dovetail?
Commonly accepted ratios are 1:8 for hardwoods and 1:6 for softer timber. This 14° marker equates to a ratio of 1:4. When used with thinner stock, the 14° angle results in a better looking joint. This different angle also gives you a slightly stronger dovetail interlock on the thinner material.
Should you glue dovetail joints?
Michael Dresdner: The only areas that require glue on dovetails are the diagonal faces. All the diagonal faces are long grain, all the square faces are end grain, and all the flat faces abut end grain. Therefore, you need only apply glue to the diagonal faces on the tails or pins, or both.
