Whiteside Drawer Lock Router Bit Instructions

Whiteside Drawer Lock Router Bit Instructions
SAFETY
The Drawer Lock Joint Bit is designed for use with a table-mounted router only,
at a maximum of 18,000 rpm.
Always unplug the router before changing or working around the router bit.
Always use push sticks, feather boards and other appropriate safety devices to
keep your hands a safe distance from the bit.
MATERIAL PREPARATION
Minimum material thickness for the Drawer Lock Joint Bit are ¾" for the drawer
front and from ½" to ¾"-thick for the sides. When making a box-type drawer use
the same thickness material for the rear face as used for the front.
The material must be flat and square with accurate 90-degree end cuts for the
joints to be straight and the drawer flat.
BIT SETUP
Use test pieces of the same thickness as the material to be joined. When the
setup is perfected, save the last test piece to be used as a setup gauge when
joining the same thickness wood in the future.
Install the bit and set it to a height of 5/16" above the table surface. Once the bit
height is confirmed by test cuts, it remains constant when cutting the fronts and
sides.
FENCE SETTINGS
Drawer Front – For flush joints, the bit exposure outside of the fence is equal to
the thickness of the side stock. An easy way to set this is to place a piece of
drawer side material flat against the fence and then hold a longer straight piece
of wood against that, extending across the cutter. Adjust the fence so that the tip
of the cutter can rotate and just clear the long piece of wood.
With ½"-thick side stock, setting bit exposure to ¾" will leave a ¼" overlap at
each end of the drawer front.
Drawer Sides - For the sides, bit exposure is set so that the vertical straight
portion of the cutter is flush with the fence.
CUTTING ORIENTATION
The drawer front is machined outside face up, flat on the table. Because the bit is
usually cutting directly across the grain, a backer board is necessary to prevent
grain blow out as the bit exits the wood.
The side pieces are machined vertically, their inside faces against the fence and
cutter.
Remember that bit height remains the same when cutting the fronts and sides,
only the fence position changes. When the drawer sides are being made from
sheet material it is easier and safer to machine the groove in the sheet and then
cut the side pieces from it.
ADJUSTING JOINT FIT
Make a test joint and hold the pieces together. If the joint is loose, raise the bit
slightly. If the joint is tight, lower the bit slightly. To correct a loose joint use the
gap between the inner edge of the side where it meets the drawer front as a
gauge. Because the correction is applied to both the drawer front and sides,
adjust bit height by ½ of that gap width. Cut a new test joint (drawer front and
side) and check the fit to confirm the fit is correct.
ASSEMBLING THE JOINT
Dry fit the pieces to be sure the joints fit properly and close snugly. Apply glue to
the contact surfaces and assemble the drawer, inserting the bottom panel in the
process. Place in clamps and apply just enough pressure to draw the joints
closed. Because of the large amount of glue surface, mechanical fasteners are
not required though can be added if you wish.
Measure the diagonals across the drawer to be sure it is square before setting
aside to dry.
Sand the joints smooth before applying finish or sealer.
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CLEANING AND MAINTENANCE
For the best performance, keep your Drawer Lock Joint Bit clean. Built up pitch
and sap can insulate the bit, causing it to run hot. The excessive heat can
damage the cutting edge.
DO NOT use caustic materials like oven cleaners as they can damage the bond
between the carbide cutters and the bit body. Most woodworking supply outlets
have commercially prepared solutions that safely remove the pitch and gum
associated with machining wood. There are also several household cleaners that
are effective in the cleaning of router bits.
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