I use the same wire wheel as Coiz and buy them at Harbor Freight, about 4.99 apiece. They seem to last quite a while and if I remember correctly, I on only used 4-5 on my frame.
I take the guard off my angle grinder when i use the the wire wheel but I wear a shield too. Still dig wires out of my skin and clothes though.
For the flap discs, I like to use 36 grit, the finer grits load up with paint and don't cut as well.
Dave's 78 Build
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