Good or bad use of a domino

[roblg3]

I'm thinking this is how I want to repair this busted table leg.  Is this an interesting use of a domino or would this be weakening an already failing joint?  I pulled out the busted pieces and glued them back in nice and tight.  Tomorrow I'm thinking of plunging down through and drilling holes back for the dowel and bolt through the domino.[attachimg=1][attachimg=2]

 

[mike_aa]

My first thought was to route out the flat area to a depth and glue a square of wood over the whole area, but then I noticed that it looks like that area is end grain and the patch may not stick.  The end grain may be why the joint failed in the first place since it appears the forces involved may have split the wood along the grain. 

Because of the grain orientation,  I'm not sure how well the domino would work in this situation.  Since it seems that the joint is held by through bolts, another idea might be to use a steel tube inside the larger hole to provide strength to receive the bolts and back up your existing repair.  The only issue is you'd have to find the right size to fit.

Mike A.

 

[Paul G]

If I understand correctly the big hole on top is for accessing the nut that broke loose? If so I'd reinforce that access hole with a piece of pipe which would act as a washer of sorts, expanding the holding surface area of the nut

 

[orm8426]

I've made a similar repair just using Titebond 2 and a few angled 16g nails and it's held up perfectly for 8+ years. What glue did you use?

 

[Birdhunter]

If I had to do this repair, I would not use a Domino. I think cutting the mortise would blow out what is left of the wood and even if it didn't, you are not going to get much added strength from the tenon.

The pipe idea is good, but I'd turn a cylinder that would just fit into the large hole. I'd use a bandsaw to slice a side off the cylinder (a little less than 1/2 the cylinder) and glue it into the hole as reinforcement. I'd then drill through the existing two small holes through the side of the cylinder to make holes for the bolts that hold on the leg.

I'd probably have to get longer bolts, but that should not be a big problem.