I was looking at this thing called a Unipunch where you can use your press to press out a hole.
I use a Magnetic drill to make my bucket and root ripper ears. It works well but is time consuming.
You need a heavy duty one to punch a 30 mm hole in 3/8” plate steel. It also takes around 41 tons to press a hole in it.
I could plasma cut a few of the and just press the holes in them. They all could be more exact there really is not play or a few thousands play in the holes lining up.
If anyone has ever used one of these would love to hear your thoughts on it.
Here is someone using one on a very small press.