Low wall between my yard and neighbor's house is topped with 30-year-old aluminum fence that wobbles. I want to replace it. Ideally I'd like to replace just the posts, but it seems they're not made to the same spec anymore so I'll probably have to do the whole thing. The fence parts are about $250, which is fine, but getting a contractor to do it would be too expensive.Album here: http://ift.tt/2CpM9L8 length is 9600 mm. there are 5 panels, held by 6 posts. The original posts are two-part construction - a base is mortared into the wall, and the main post slides over the top. Modern equivalent is one-piece, requiring the bottom 150 mm to be embedded in the wall.The original post bases are in various states of decay and/or looseness. The posts are 24 mm x 36 mm in section, variously situated in concrete blocks or in gaps made between bricks. The wall is about 100 mm wide.I haven't done anything yet except wobble it a bit do demonstrate the problem in a gif.Wobble GifQuestion 1: How to remove the old post bases, creating enough room around and below (150 mm depth) for sufficient mortar to make the new posts secure, without destroying the rest of the wall.I own an angle grinder, demolition hammer, hammer drill. I suspect that what I really need is a core cutter. I have no experience with them. May be able to rent one. It seems it'd need to be secured somehow (with a bolt?)I'm open to other ideas.Question 2: How to set the new posts in place in the old wall so that they're straight and sturdy. I realize this is several questions in one:What material to use? Sand & cement? (I have some of that.) Something else?How to prepare the old surface to adhere well to the new material? (No point doing the project if it's going to crack and become wobbly again!)How to line things up? String and a level? There must be lots of great tips for doing this right...Should I aim to set them all at once, or one-at-a-time?Question 3: What am I forgetting to even ask about?I think I've gone on long enough for my first r/DIY/ post. Any thoughts or suggestions are welcome. I'm in Japan, by the way. via /r/DIY http://ift.tt/2BnmymO
