Tenons – The Difference

  • Undersize tenons cannot form a strong bond. Glues are not gap filling. A strong bond will only form where the tenon and wood are close enough to create a chemical bond, usually on one side or the other. If the tenon “falls” into the mortise without any resistance, it’s too small or the mortise is too wide and the chemical bond required for strength will not form. This is true for any type of mortise and tenon joint, traditional or otherwise.
  • If the fit is too tight the glue will be sheared from the surface creating a starved joint. With a tenon with smooth faces there is no way to know if the glue has been sheared from the surface during insertion until the joint fails.
  • We don’t groove the radius edges of our tenons so as not to reduce the shear strength available where the edge of the tenon contacts the edge of the mortise. Grooving the edges of the tenon is sometimes done to relieve hydraulic lock. The multiple grooves on the cheeks of our tenons release any hydraulic lock and allow any excess glue to be able to move away from the bottom of the mortise.
  • We machine our Compressed Loose Tenons on a 4 sided moulder for closer size control and to eliminate as much as possible sizing variations. There will be some small differences in thickness as the wood grain doesn’t retain compression uniformly due to the angle of the grain or density of the wood being compressed.
  • All sizes are suitable for use with any jig that is adjustable, as well as most template systems and other methods of routing mortises such as router tables, pin routers and mortising machines.
©Copyright 2014

Website Design by Northern Computer Services