Q&A – gluing endgrain – including Plywood and Scarfs

—gGluing Endgrain
Gluing timber end grain with epoxySee drawing of endgrain right..
The basic problem is that end grain is highly absorbent so it can steal the resin from the join leaving insufficient for good bonding.  The trick … is to feed the end grain some mixed resin before the glue mix is put on
Remember that generally epoxy needs to have the correct powder modifier added to the mixed resin and hardener for most types of gluing.
When gluing endgrain with epoxy it is a two stage process.
1/ Mix enough resin and hardener to do the job. Stir well. Brush the mixed epoxy onto the endgrain.
2/ Wait 5 minutes.  This allows the epoxy to soak in.  Brush more epoxy on the endgrain.
3/ Now add the high strength gluing powder to the epoxy in the container and apply to gluing surfaces.
4/ And hold in place by normal method – clamps or temporary fasteners or tape until the epoxy sets up.

Gluing Endgrain with epoxy

See drawing of endgrain right..

End grain is more absorbant.

End grain is more absorbant.

The basic problem is that end grain is highly absorbent so it can steal the resin from the join leaving insufficient for good bonding.  The trick … is to feed the end grain some mixed resin before the glue mix is put on

Remember that generally epoxy needs to have the correct powder modifier added to the mixed resin and hardener for most types of gluing.

When gluing endgrain with epoxy it is a two stage process.

  1. Mix enough resin and hardener to do the job. Stir well. Brush the mixed epoxy onto the endgrain.
  2. Wait 5 minutes.  This allows the epoxy to soak in.  Brush more epoxy on the endgrain.
  3. Now add the high strength gluing powder to the epoxy in the container and apply to gluing surfaces.
  4. And hold in place by normal method – clamps or temporary fasteners or tape until the epoxy sets up.

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On the "round Australia trip" I found myself employed by a tiny business in Adelaide - Duck Flat Wooden Boats in Adelaide.It was an eye opener - It became clear that one could build a boat for a fraction of the cost of current racing boats.My ideas hinged around high performance, easy building, fun to sail and reasonably cheapToday Storer Boats are built in all countries and we have active groups on Facebook for the following groupsGoat Island Skiff Open Goose Storer Boat plans Really Simple Sails