What other jointer router cutter sizes are available?

         
         
  Jointing cutters  
         
         
 

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

 
  Diagram showing how to measure the diameter of the shank of a butterfly spline router cutter  

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

 
  Diagram showing how to measure the diameter of a butterfly spline router cutter  

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 cuttersbutterfly spleen cutters

 
  Diagram showing how to measure the length of the cutting edge of a butterfly spline router cutter  

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")

 
         
  Diagram showing how to measure the angle of the cutting edge on a butterfly spline router cutter  

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. 

 
         
  Diagram showing how to measure the angle that a butterfly spline router cutter will create  

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

 
  Diagram showing how to measure the diameter of the shank on a drawer lock router cutter  

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 cuttersdrawer lock cutters

 
  Diagram showing how to measure the diameter of a drawer lock router cutter  

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

 
  Diagram showing how to measure the length of the cutting edge on a drawer lock router cutter  

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

 
  Image to show that drawer lock router cutters are designed for use with materials 15mm to 25mm thick  

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 cuttersknuckle joint cutter

 
  Diagram showing how to measure the diameter of the shank on a knuckle joint router cutter  

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

 
  Diagram showing how to measure the diameter of a knuckle joint router cutter  

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

 
  Diagram showing how to measure the length of the cutting edges on a knuckle joint router cutter  

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"). 

 
         
  Diagram showing how to measure the radius of a knuckle joint router cutter with an indication of how it affects the shaping of a workpiece  

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"). 

 
         
  Diagram showing how to measure the angle on a knuckle joint router cutter and the effect it has on a workpiece  

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

 
  Diagram showing the location of the guide on a knuckle joint router cutter  

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.

 
         
  Examples of bearing guides of different sizes, used with knuckle joint router cutters  

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

knuckle joint cutter

 
         
 

What size knuckle joint cutter should you choose?

 
  A wooden workpiece to be cut with a knuckle joint router cutter  

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

 
  Diagram showing how to measure the diameter of the shank on a staff or sunk bead jointer router cutter  

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

 
  Diagram showing how to measure the overall length of a staff or sunk bead jointer router cutter  

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

 
  Diagram showing how to measure the diameter of a staff or sunk bead jointer router cutter  

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

 
  Diagram showing how to measure the cutting edge length on a staff or sunk bead jointer router cutter  

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").

 
         
  Diagram showing how to measure the radius of a staff or sunk bead jointer router cutter  

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?

 
  How to choose the right size of staff or sunk bead jointer cutter  

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.

bead jointers
 
         
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