Using a Sliding Bevel - How to Mark and Transfer Angles From one Item to Another

Summary: Instruction on what a sliding bevel is and using a sliding bevel to repeatedly set or transfer an angle onto timber or other materials using it's adjustable gauge. Find out what parts make up a sliding bevel and how they can be used to calculate angles easily.

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What is a Sliding Bevel?

A Sliding Bevel is a woodworking tool which is used to duplicate an angle. They are made up of two parts - the stock and the blade.

This may be necessary when trying to miter skirting boards for example, when the room is not square.

Sliding bevel for duplicating angles

A sliding bevel is used for duplicating angles in carpentry

How to Use a Sliding Bevel

The Bevel or blade is loosened by unscrewing the nut or screw which clamps the sliding part of the Bevel (the blade) to the handle (stock).

The handle is then pushed against one of the angles and the blade is moved to rest against the other angle. The nut is then tightened and you are left with an accurate representation of the angle which is easily transferred to skirting, other timbers or a variety of other items.

In the image below, for example, an internal angle of 70 degrees is shown in the corner of a room. If a shelf were required in this corner it would obviously need to be cut to 70 degrees. There is not always a protractor at hand, but when doing any carpentry, it is always useful to carry a sliding bevel.

Using a sliding bevel to cut a 70 degree angle

A sliding bevel can be used to cut items so that they butt up to non-square walls such as a shelf

The stock is held against one wall, the blade against the other. The nut tightened and the 70 degree angle can then be transferred to the timber which, in turn, can be cut to make the shelf.

The great thing about a sliding bevel is that the same angle can be transferred any number of times so it does not have to be measured every time.

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