I'm trying to decide whether to use the rotary base that comes with the Harbor Freight press, or build a flat 4" x 5" x 3/4" block of metal with the appropriate holes. I'm thinking the block of metal would be more flexible for positioning.
Every press that I have seen has the anvil holder in a fixed location. They cannot be moved around.
Alignment is very important.
I have seen presses that still had the table on the bottom, but they were locked in place.