I started reading your post and the same thought popped into my mind!Once you have restored whatever it is you have de-rusted, than perhaps you might consider trying to stop it rusting again.. A coat of wax polish will provide protection.. I use Renaissance wax, which is specifically designed for conserving both wood and metal...
On a separate, but related note, I have a working kukuri that is lightly rusted, but with some notches in the edge through use/misuse.
I'm assuming it's a bit much to try and sharpen these out by hand. What would happen if I used a grinder and some oil?
Not after a shiny finish, since it's a working knife, just a sharp edge and de-rust.
yeah... but you run the risk of bending the tip on stones etc, and of ruining whatever edge you had on the knife.. OK for agricultural stuff but I would not do this with anything but the crudest of blades..
Autosol applied with a piece of cardboard.Autosol
That's AUTOSOL, not anything else that may sound similar.
Don't excessively 'spot clean' the rusty bits, you need to clean the whole blade equally otherwise the rusty bits will end up with a different optical quality.
If you have a roll of rifle cleaning cloth, that's ideal for polishing the blade with the Autosol.
Go pick up a whetstone from a car boot sale. Have a look at the video below. It seems the difference between straight and curved blades is that for the latter you move the edge of the blade in the shape of the curve to maintain and even edge.
I have an angle grinder, don't want to spend any cash and don't want to spend hours on the job.
I was more after a "don't do that, or you'll knack it", but since no one has warned me...
Don't use the grinder, you'll knack it. If it's an original old kukri, it could have some value to a collector.
Mine is in clip:There's kukris, and there's kukris. I have 1 x dress kukri (chrome plated) that I would not let near a sharpening stone of any sort. The other two are very utilitarian, and keep a very good edge, but they have been abused a bit. I wouldn't have any qualms about taking the latter two to a bench grinder if there are really big nicks out of the blade, but I would take it very gently so as not to lose the temper (of the metal, not mine).
Looks like there's been a bit of clumsy grinding on the blade. Might be a need for a wire brush, and then heavy duty polishing compound using a bench grinder (with wire brush and polishing wheel).