Lock Mitre Joint

MACHINE CUT

The lock mitre is similar to the half-blind lap joint, but is made with a small mitre that conceals the end grain, or the core of suitable man-made boards, at the corner. The joint can be cut entirely on a table saw - using a dado head enables you to cut the joint quickly, but you can remove the waste in stages using a conventional saw blade.

Lock Miter Machine

1 Cutting the groove - side member

Cut the groove across the side member with a single pass across the circular saw blade.

1 Cutting the groove - side member

Cut the groove across the side member with a single pass across the circular saw blade.

Rabbet And Dado

2 Cutting the rabbet - side member

Set up the saw with a dado head and adjust the height

2 Cutting the rabbet - side member

Set up the saw with a dado head and adjust the height to remove enough waste to leave a short square lap that will form the mitre at a later stage. Clamp a wooden spacer to the rip fence, just above the dado head, against which you can butt the end of the work

Locking Rabbet

4 Cutting the tongue - rabbet member

Change to a conventional saw blade, and set the rip fence to cut the short tongue to length.

4 Cutting the tongue - rabbet member

Change to a conventional saw blade, and set the rip fence to cut the short tongue to length.

Lock Rabbet Joint
Tilt the blade, and then adjust the saw's settings to trim the end of the lap to 45 degrees, taking care not to shorten the lap.
Locking Rabbet JointLocking Rabbet

3 Removing the waste - rabbet member

Adjust the saw and use a dado head that will leave a lap that is about one-quarter of the wood's thickness, and a tongue on the inside that will fit the groove cut in the side member. Set the height of the dado head to match the thickness of the side member. Then clamp the rabbet member upright in a tenon-cutting jig (see page 80). and remove the waste with one pass across the saw blade.

6 Cutting the mitre - side member

Adjust the saw to mitre the short square lap on the side member to 45 degrees. Adjust the blade precisely, to avoid scoring a notch across the shoulder.

Chapter 7 A housing is a groove cut across the grain. When used as a joint, it houses the end of a board, most frequently a fixed shelf or dividing panel. The housing is either stopped short of the front edge of the work or, for less-important work, the joint may emerge as n through housing. The shelf or panel is usually glued into a simple straight-sided housing. However, for a more positive joint, a dovetail can be included.

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How Cut Mitre Joint

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Through Mitred Dovetail

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This simple through joint shows on the front edges of side panels. It is suitable for rough shelving, or for cupboards with lay-on doors that cover the front edges. If you plan to lip the boards, it is best to apply the lippings first, so it is easier to plane them flush.

them flush.

Woodworking Marking Gauge Plans

1 Marking the face of the side panel

Measure the width of the housing from the shelf, then score the two lines across the workpiece, using a try square and marking knife.

1 Marking the face of the side panel

Measure the width of the housing from the shelf, then score the two lines across the workpiece, using a try square and marking knife.

Woodworking Marking Gauge Plans

2 Marking the edges

Square the same lines onto the edges of the panel, then scribe a line between them, using a marking gauge set to about 6mm (J4in).

Housing Joint Shelf

4 Removing the waste

Pare out the waste from a narrow panel with a chisel, working from each side towards the middle.

Chisel Dado JointHow Build Miter Joint

3 Sawing the housing shoulders

To make it easier to locate a saw across a wide panel, take a chisel and pare a shallow V-shape groove up to the marked line on both sides of the housing, then use a tenon saw to cut each shoulder down to the lines scribed on each edge.

Router Plane Fastening
Woodworking Tools and Installation Tips

Woodworking Tools and Installation Tips

There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.

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Responses

  • mathias gottschalk
    How to build a miter joint?
    8 years ago
  • Anke Eberhart
    How to Woodworking lock miter Joints saw blade?
    3 years ago
  • zac
    How to make lock mitre joint on table saw?
    3 months ago

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