ACUTE ANGLED JOINTS

Fig. 55A

An acute angle joint joins two boards together at an angle less than 90°. The acute angled joint is very similar in construction to the the obtuse angled joint and can be used with the obtuse angled joint to make boxes with angles other than 90°.

SETUP

Joint

Angle

Use the same setup as you would for the obtuse angled joint. Use 180° minus the joint angle for the insert angle when you make your angled insert or your angled clamping board.

NOTE: If the acute angle and the obtuse angle add up to 180°, use the same setup for both joints.

CUTTING THE TAILS

Step 1 -

Step 2 -

Step 3 -

Step 4 - Step 5 -

Cut the end of the tail board according to the instructions on the drawing (Fig. 56A). Steep angles or thin wood will make for a weak joint. Make this cut on a table saw with the blade beveled. Set the miter gauge at 90° for the first cut and use a tenoning jig for the second cut (Fig. 56B).

Clamp the workpiece as you did for the obtuse-angled joint, except face the outside surface of the board away from the base of the jig.

Step 3 is identical to Step 5 in "CUTTING THE TAILS" of the obtuse-angled section. Set the router bit depth to where the step is in the tail board.

Cut the tails and remove the tail board.

FIRST CUT

SECOND CUT

THICKNESS OF PIN BOARD

THIRD CUT

(IF NECESSARY)

ANGLE BETWEEN BOARDS

Fig. 56B

OUTSIDE

INSIDE

SURFACE

SURFACE

OF BOARD

OF BOARD

 

Fig. 56A

CUTTING THE PINS

Step 1 -

Step 2 -

Step 3 -

Step 4 -

Cut the end of the pin board according to the instructions on the drawing (Fig. 57A). Steep angles or thin wood will make for a weak joint. Make this cut on a table saw with the blade beveled, and with the miter gauge set at 90°.

Clamp the workpiece as you did for the obtuse-angled joint.

Hold the boards together and mark the end of the pin board at the edges of the tails.

The remainder of the steps, including fitting the joint, are identical to the obtuse-angled joint section.

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