Quote Originally Posted by Swarfing View Post
I would make a temporary tank up out of plastic sheet and use the electrolysis method, much safer and will look like new for all the parts. Defo stay away from the sand paper
now that sir is a fantastic idea... its been a while since I did this last!

So; youtube...

ok recommends american "Arm and Hammer" soda.... is there any british alternatives?

as the gantry is in the middle (so the cartridges are also in the middle) with rust either side. Il have to do the cartridges aswell? if I have to replace these its no biggies though i guess?