I have an old fence with round metal post that are concreted in and in good condition but I want to replace them with timber posts. To avoid digging everything up I would like to cut the metal post down to about 150mm and drill out the post to slide over it and bolt through.
My question is, if I need to drill 50mm hole 150mm vertically into the middle of the post is a 100x100mm post big enough to still maintain enough strength? – I can go 150x150mm it just might look a too over sized for the area the fence is in.
Best Answer
(Sorry I'm not Metric, we use 2x material) Dado out a wooden Post for the pole, then add a 2x to the side you dadoed out to cover it and screw it to the dadoed post and bolt the whole thing together
Depending on the Diameter of the post, you can also wrap it in 2x. We have also done 2x6 Left to right (So you see the 2x6 face on the fence, I like 4x6 Fence Posts. Then between them, also flush against the post, cut a 2x to fit between the 2x6 and bolt though the side 2x4s.
Sizing might be off, but I think you can get what I'm describing? We use Carriage bolts on the side you see and counter sink the nuts.