The glue alone will be stronger than the wood itself. The purpose of the joint is to give a large long grain contact area for the glue.
Nothing wrong with a lap either - but both will do the job just fine.
Understood, that would work and not be too slow. The little slices of wood left behind should snap off near the base, leaving not too much cleaning up to do with a chisel. You could also clean up with a sanding disk in an angle grinder.
How visible is it going to be? Another option might be to run a length of dexion up each corner. Maybe 15 inches long, held in place with suitable coach screws. Does it really have to be galvanized?
It's not the strength of the material that counts, it is the strength of the connections. I agree, you could mould it round some studding let into the wood.
Agreed; the reason I didn't suggest a scarf joint is that, away from a work-bench, it would not be so easy to cut the upright neatly and accurately. Although you could clean up a "rough-cut" with a sanding disk on an angle grinder.
Ha Ha! Good point.
the existing upright could be doe with a handheld circular. Scribe the position of the cut ends onto fresh wood & cut with a mitre saw.
NT
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