What other jointer router cutter sizes are available?

What butterfly spline router cutter sizes are available?  

Butterfly spline router cutters are most often sized according to the following dimensions:

Shank diameter of butterfly spline cutters

The shank diameter is measured across the centre of the shank from any point on its circumference. 

Butterfly spline cutters are currently available with ½" (12.7mm) shank diameters only. 

Diameter of butterfly spline cutters

The diameter is the maximum width of the router cutter, and is measured from the outermost point of the cutting edges through the centre of the bit. 

Butterfly spline cutters are typically 28mm (1⅛") in diameter.

Cutting edges of butterfly spline cutters

Length

This is the maximum length of the full cutting edge of the router cutter. It is measured from the top of the cutting edge to the bottom. 

The cutting edge length of a butterfly spline cutter is 46mm (1 13/16")

Angle

For butterfly spline cutters, the angle of the cutting edges in relation to the horizontal and vertical plane will normally be listed. 

The butterfly spline cutter stocked by trend has cutting edges with an angle of 14-degrees in relation to the vertical plane, and 104-degrees in relation to the horizontal plane. 

It will produce butterfly splines with a 14-degree taper in relation to the horizontal plane. 

The larger the cutter's angle, the more pronounced the butterfly spline will be, and vice versa.

What drawer lock router cutter sizes are available?

Shank diameter of drawer lock cutters

The shank diameter is measured across the centre of the shank from any point on its circumference. 

Drawer lock cutters are currently available with ½" (12.7mm) shank diameters only. 

Diameter of drawer lock cutters

The cutter diameter is the maximum width of the router cutter, and is measured from the outermost point of the cutting edges through the centre of the cutter. 

Drawer lock cutters have a diameter of 25.4mm (1").

Cutting edges of drawer lock cutters

Length

This is the maximum length of the full cutting edge of the router cutter. It is measured from the top of the cutting edge to the bottom. 

Drawer lock router cutters have cutting edge lengths of 12.7mm (½").

Material thickness of drawer lock cutters

This is the thickness of material that a cutter can be used in. 

Drawer lock router cutters are designed for use in boards between 15mm (⅝") and 25mm (1") thick.

What knuckle joint router cutter sizes are available?

Knuckle joint router cutters are most often sized according to the following dimensions:

Shank diameter of knuckle joint cutters

The shank diameter is measured across the centre of the shank from any point on its circumference.

Knuckle joint cutters are available with ¼" (6.35mm) shank diameters only. 

Diameter of knuckle joint cutters

This is the maximum width of the router cutter, and is measured from the outermost point of the cutting edges through the centre of the cutter. 

Knuckle joint cutters have diameters ranging from 23.8mm (15/16") to 28.5mm (1⅛"). 

Cutting edges of knuckle joint cutters

Length

This is the maximum length of the full cutting edge of the router cutter. It is measured from the top of the cutting edge to the bottom.

Knuckle joint cutting edge lengths range from 17mm (43/64") to 22mm (⅞"). 

Radius

This is the radius of the cutting edges and the knuckles they produce. There are knuckle joint cutters available for producing radii of 7.14mm (9/32") or 9.5mm (⅜"). 

Angle

This is the angle at the base of the cutting edges. Knuckle joint cutters produce angles of 45 degrees. 

Guide diameter of knuckle joint cutters

Knuckle joint router cutters are supplied with 9.5mm ball-bearing guides located beneath their cutting edges. 

The distance between the outside edge of the guide and the furthest tip of the cutting edge will determine the maximum width of cut that cutter will produce.

With most models, the guide can be removed and replaced if it becomes damaged or broken. 

What size knuckle joint cutter should you choose?

Generally speaking, knuckle joint cutters that produce a 7.14mm radius are better suited to materials of up to 14-15mm (35/64-19/32") thick, while those that produce a 9.5mm radius are better suited to materials up to 19mm (¾") thick. 

What staff and sunk bead jointer sizes are available?

Staff and sunk bead jointer cutters are most often sized according to the following dimensions:

Shank diameter

The shank diameter is measured across the centre of the shank from any point on its circumference. 

Staff jointer cutters and sunk bead jointer cutters are available with ¼" (6.35mm), 8mm (5/16"), 12mm (½" approx.) and ½" (12.7mm) shank diameters.

Overall length

The overall length of a cutter is measured from the top of the shank to the bottom of the cutting edges or guide (if there is one).

Staff bead jointer cutters are typically 53mm (2 3/32") in length. 

Diameter

The diameter is the maximum width of the router cutter, and is measured from the outermost point of the cutting edges through the centre of the bit. 

Staff and sunk bead jointer cutters have cutting diameters ranging from 18mm (45/64") to 28.5mm (1⅛").

Cutting edges

Length

This is the maximum length of the full cutting edge of the router cutter. It is measured from the top of the cutting edge to the bottom. 

Staff and sunk bead jointer cutting edge lengths range from 12.7mm (½") to 33.5mm (1 5/16").

Radius

This is the radius of the cutting edges and the profile they produce. Staff bead jointers have radii of between 2.8mm (7/64") and 3mm (⅛"), while sunk bead jointers have radii of 18mm (45/64").

Which size should you choose?

Both staff and sunk bead jointers should be used with staff bead cutters that have matching radii and cutting edge lengths, in order for the finished joints to fit together correctly.