Essential Joinery - Marc Spagnuolo

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JOINERY

      FLAT 45° MITERS: A FRAME | Butt Joints

      4. After adjusting the saw and

       making more test cuts, the gap is

       removed and you’re ready to cut

       the workpieces.

      5. Cut the workpieces to size

       using a stop block, if possible,

       for repeatability.

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      ESSENTIAL JOINERY

      MITER ASSEMBLY STRATEGIES

      Miter joints can be tricky to assemble with nothing more than glue and standard

       clamps. Because of the angles involved, the pieces tend to slide past one another

       and it doesn’t take long before your carefully cut miters are overhanging and

       creating odd angles. Here are two of my favorite ways to assemble miter joints.

      BAND CLAMPS

      TOOLS

      Band clamp

      Band clamps typically feature four corner cauls, a metal or fabric band,

       and a clamping head that tightens the whole assembly by pulling on

       the band.

      1. Position the parts on a flat

       work surface and arrange the

       cauls in their approximate

       positions around the frame (one

       at each corner). With glue applied

       to each joint, slowly tighten the

       band clamp, making any slight

       adjustments needed to keep each

       corner aligned.

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      TIP

      Always do a test assembly with no glue just to double-check the

       workpieces and to familiarize yourself with the process.

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      ESSENTIAL JOINERY

      MITER ASSEMBLY STRATEGIES | Butt Joints

      ANGLED BLOCKS

      To assemble a miter using a regular clamp, we’ll need to use angled

       cauls so that the clamps are oriented perpendicular to each joint.

      1. Use thick CA glue to attach

       the triangle cut-offs to the ends

       of the mitered workpieces. A

       layer of blue tape between the

       frame and the blocks will help

       prevent tearout when removing

       the blocks.

      2. Apply glue to the miters.

      3. Apply clamping pressure to

       each joint.

      4. After the glue dries, use a

       mallet to pop off the glue blocks.

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      TOOLS

      Clamp

      Mallet

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      ESSENTIAL JOINERY

      REINFORCING FLAT MITER JOINTS

      Miter joints are essentially butt joints that are cut on an angle. As we know, butt

       joints are not very strong with glue alone so miter joints are often reinforced for

       the sake of durability. Fortunately, the reinforcement can also be a beautiful

       decorative element.

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      1. Mark a 45° V shape on the

       face of a piece of plywood or MDF.

      2. Place the frame on the

       plywood using the lines. At the

       bottom frame corner, use a small

       piece of double-stick tape or a dab

       of CA glue to secure the frame.

      3. Add two clamps and use a

       tall fence on the tablesaw if you

       have one. Raise the blade so it

       goes at least halfway into the

       miter joint and make the cut.

      4. The slot is usually centered

       along the thickness, though you

       have some creative flexibility. Use

       a square-tooth blade. The slot will

       provide a much nicer-looking joint

       than an alternating bevel blade.

      Miter keys are thin strips of wood that are inserted into the miter joint

       after the joint is glued up.

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      MITER KEY REINFORCEMENT with SIMPLE GUIDES

      TOOLS

      Adjustable square

      Tablesaw

      Square tooth blade

      Clamps

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      ESSENTIAL JOINERY

      REINFORCING FLAT MITER JOINTS | Butt Joints

      1. Set the tenoning jig back

       support to 45° and clamp the

       workpiece in place.

      2. Align the blade with the

       center of the workpiece (or off-

       center if you prefer) and raise the

       blade to at least halfway into the

       miter joint, then make the cut.

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      TOOLS

      Tablesaw

      Tenoning jig

      Clamp

      MITER KEY REINFORCEMENT with TENONING JIG

      If you have a tenoning jig, miter keys are incredibly easy to make.

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      ESSENTIAL JOINERY

      Butt Joints | REINFORCING FLAT MITER JOINTS

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      MITER KEY REINFORCEMENT with HOMEMADE CRADLE

      If you make a lot of miter

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