I just completed one axle removal !
I welded a 7/8 14 nut to a 5/8 12 nut, used a piece of threaded rod screwed into the smaller nut, attached the larger to the axle, slipped a 1" pipe over the rod, placed a large washer on the end of the rod and a bolt to hold it in place , and voila ! ... a poor man's slide hammer effective for this purpose !
[A word of caution to all who might try this: make sure the car is far enough from the garage wall to allow axle removal - preferably more than the 2 inches I had left.]