Originally Posted by
country gent
Its going to be a lot of work but I think it could be recovered.
Disassemble mould blocks and handles both, clean steel parts by soaking in the remover of choice. and a soft tooth brush. Polish the sprue plate flat and true. remove all burrs and sharp edges.
The aluminum blocks are going to be the harder. Start with a good cleaning to remove what an be easily. Polish with a fine sand paper 400-600 grit using dish soap and water to keep from loading the paper. work on a flat hard surface. start with the faces remove about .002-.003 from each face. You dont have to remove all the pits just smooth them and clean up the surface. reinstall the alignment pins and clean up the tops the same way. Reinstall the sprue plate and cast some bullets.
Now remember the .002-.003 you took off the faces, you can now lap the blocks back to round removing most of the pits, you have that much on each side to work with.
You may end up deepening the vents with a scribe or awl also.
Only you can decide how much work to put into this mould to recover it.