Author: clarnibass
Date: 2019-09-19 08:54
You can use alum to remove stuck screws, as long as the screws are made of a ferrous metal (pretty much always are) and the post is non-ferrous (pretty much always too). I'm not sure if the exact type of alum matters, but you put it with water in a non-ferrous or other material pot/container (aluminium, ceramic, etc.) and it's best to have it almost boiling. It supposedly works without heating but it would take ages (even weeks or months for a tiny screw). Even hot it's very slow (sometimes days for a small screw, sometimes less). Just take the post off and put it in it, so you can use a very small container (I use a tiny ceramic bowl for that).
I've only had to resort to this a couple of times, but a lot of times I had to use special tools to remove stuck or broken screws. Alum can work if you don't have them, as long as you don't mind ruining the screw.
At least this way you won't have to change the post, just the screw (assuming the inner threads are ok, though this can usually be repaired even if they are stripped).
Post Edited (2019-09-20 11:45)
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