Vinegar is an acid and it will work but you need to expose the system for much longer because it it weak. https://clrbrands.com/Products/CLR-Household/CLR-Calcium-Lime-and-Rust-Remover Using something like this will speed up the process. Commercially we use. https://www.amazon.com/Rydlyme-Cleaner-G...

Problem with most instantaneous water heaters is small passages don’t work well with bad water. The minerals build up so fast The only way to stay ahead is flush it with a descaling agent every few weeks. The cost of the chemical averages out to the cost of replacing the units. So even then it’s ex...

If it's soft solder then you should have no problem getting it apart. I would first heat the joint slightly and give it a light wire brush by hand with a toothbrush type brush. To clean the surface and allow the solder to flow back out freely Then would heat up bit by bit and let the solder flow ba...

It’s old enough I doubt it’s silver solder. Propane should be enough. MAPP is definitely enough. When unsoldering old stuff you want to go with less heat, warm it all up slowly so that all the solder gets soft at the same time. I would ask before you open it, what’s the real problem. If the element...

Firstly I don't think you'd get that tip to fit a mapp gas bottle. If it's soft solder, the normal mapp gas torch will do it. If it's silver solder, you'll need fuel/oxy to get enough heat into it or at least 2 x mapp gas bottles. My guess is the heaters were soldered in first, then the cap to the ...

First I presume it's some kind of silver solder. If you are using mapp gas + oxygen, ok. If it's just the hand held bottle/ torch, it won't be enough- you'd need at least two of these going around the pipe at the same time. I presume the heater rods come out with the cap. You'll probably find the s...

Thanks for comments.

Might this tip work with just MAPP alone?


https://youtu.be/pxMWQyVXtxU

Hi. I am newbie to gas welding aside from some little propane work done with my dad decades ago. I know safety is first. This is a learning project for me. I want to remove the brass soldered brass cap from a small copper boiler. I intend to use MAPP gas. Is this just welding it on in reverse? Do I ...

Hi and thanks for registration ok.

I am just a hobbyist. I have repaired coffee machines before but never via welding. Never had a cracked boiler.

Seems very interesting. I have a test project and I will post on appropriate forum with any advice appreciated.

Thanks