Festool Domino DF 500 User Manual download pdf (Page 10)

10 Domino DF 500 Tenon Joiner

Operation

Overview, General Notes, and Tips

Getting Started

Because the look and feel of the Domino joiner may already

be familiar to you, or similar to other tools you may have

used in the past, you might be tempted to forego a basic

introduction to using the tool. However, unlike other tools of

similar look and feel, the Domino machine is extremely

precise in its operation. For this reason, it is recommended

that you spend some time practicing using the Domino joiner

before you begin using it for your fine woodworking projects.

For best results, observe the following tips:

► Always secure the workpiece firmly.

► Hold the Domino Joiner firmly by the handles and keep it

flat against the workpiece.

► Plunge the mortising bit into the workpiece with a slow and

steady pace.

Choosing the Right Domino Tenon Size

Because the Domino system is a form of the classic mortise

and tenon joinery, it should follow much of the same

guidelines of mortise and tenon joinery. Here are some

guidelines to assist you in making your choices:

► When the strength of your workpieces is comparable

to the strength of the Domino tenon (e.g. general

hard woods) then the thickness of the Domino tenon

should be approximately 1/3 the thickness of the

workpieces.

► It is acceptable to use a tenon that is slightly thicker

than 1/3 when the width of the Domino tenon is

relatively narrow compared to the width of the joint.

This is why 8mm Domino tenons are the most

common for joining ¾-inch lumber.

► For softer woods, such as pine, the joint will be

stronger when the tenon is 1/3 or slightly less.

► For plywoods, especially low-grade construction

plywoods, the Domino tenon is much stronger than

the surrounding wood, so it is best to maximize the

strength of the substrate by minimizing the

thickness of the tenon.

Domino Tenon Placement Guidelines

There are no steadfast rules on where tenons should be placed,

especially when they are used for alignment purposes. For edge

joining boards, a typical placement might be 6 to 8 inches apart.

However, when tenons are used to strengthen a joint, you might

be tempted to place the tenons too close together. This can

actually weaken the joint by removing too much of the substrate

material.

► A wide mortise weakens the substrate, so it is better to have

several narrow mortises with uncut space in between, than it

is to have a single wide mortise with several tenons side-by-

side.

► When placing several tenons close together, leave at least

twice the tenon thickness between mortise holes. As a

general rule, this means the minimum tenon spacing should

be about 10 mm to 20 mm, but they can be spaced much

wider.

► When creating stacked mortises for extra thick lumber, an

extension of the “1/3 rule” mentioned above still applies.

Specifically, the distance between mortises, and the distance

between a mortise and the wood surface should all be equal

to (or larger than) the thickness of the tenon.

Plug-It

Power Cord

The Domino joiner comes equipped with a removable

Plug-It power cord. To install the power cord, insert the

cord into the inlet on the tool with the key and keyway

aligned, and twist the locking ring. Reverse the

procedure to remove the cord.

Note: Turn the outer locking ring ¼-turn to

fully engage or disengage the cord. If the lock

is not fully engaged, the cord may fall out of

the socket.

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Festool Domino DF 500 User Manual Page 10

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