How do you remove heavily rusted rods?

[Jeabrams]

I have used the alum routine successfully but,
when a rod is "welded" to a tube and all else fails, drilling is the last resort. I use four flute end mills not standard point drill bits. The end mill is more controllable and less likely to "slide off" into the post and destroy it. And as with all extraction methods it wont work for every post - some are just difficult to access..... once off the posts, the rod can usually be corroded out of the tube with alum, carefully...