I want to glue a vertical piece of oak to a horizontal piece, which is part of a chair and would be lifted by one of the horizontal sections, there are no joints. Any suggestion as to the strongest glue would be appriciated.
If the wood isn't jointed and you are relying purely on the glue, I would say that no glue would be strong enough to be reliable. Could you not dowell or screw it.
I doubt there's a glue that would work in this situation given the amount of stress on the horizontal section by continuous lifting of the presumably heavy chair. Have you considered doweling the two pieces together? This would strengthen it immensely without any visible evidence of jointing. Oak doweling is readily available.
I agree with Ratter but to answer your question about the strongest (wood) glue, the answer has got to be Cascamite.
Google it for your local stockists.
The comments so far are very much to the point, assuming there is no dowel, screw or such. As for the strongest glue, I suspect you will not find Gorilla Glue is indeed the best wood adhesive but it must be used correctly, which is not that difficult.
Sorry for the abrupt repy,(call for dinner,or tea depending on where you live) On a closer inspection I found a snapped dowel, I have drilled it out and replaced it. Now small problem, how do I get small dents out of the wood? I can remember from a long time ago something to do with water and heat, am I on the right track?
I vaguely recall something to do with ironing over a damp cloth to make the fibres swell. Not that I've ever tried it. If it is bad you may be stuck with a filler job.
It depends how deep the dents are but, yes, if you drop warm water onto the hole/dent the wood will expand - sometimes higher that the surrounding level- and then you can lightly sand back. Water application may require two or three goes.