Thread: Butterfly inserts

Will they be strong enough?

Dunno, that depends on how dry the timber was when they were put in. I like the idea though, & hope it works.

Will they be strong enough?

I also like the idea and would say that they are more than likely strong enough. The question that remains though is how many more will have to be added as time goes by?

I am wondering if they are meant to be functional or were added for the effect of making them look like they are holding the split log together

butterfly keys Have a long history and are more than strong enough to hold slabs from ripping themselves apart.

The butterfly keys are sitting on the tangential axis. Both on the end of the log and on the face. While the movement is greatest in the tangential axis- the keys are long grain possible I could imagine the keys coming loose as it will not move as much as the tangential grain.

Usually the keys are used in slabs were their is far less mass than the log pulling on the keys.

I suppose the question does greater mass equal more force and movement?