These lovely old locks are well worth the effort of restoring. They are very well made and attractive.
Remove the lock taking care not to lose anything, I even kept the screws as they have nice heads.
Caustic soda is dangerous stuff, you'll need a full complement of safety gear, and don't splash it about!
Add the caustic soda to the water not the other way round.
Give it a good stir until the crystals have disolved.
Please your bits and pieces carefully in the solution, don't drop it in there.
Depending on the thickness of the old coats of paint, this process could take just a few hours. I left this one soaking overnight.
Remove everything and place it in a clean container ready for rinsing.
Use plenty of clean water.
It will now be a fairly easy task to remove the paint using a wire brush. Wear eye protection for this bit too.
Isn't that lovely?!