What is Reddit's opinion of Greenlee 7235BB Knockout Kit Hole Punch Set, 10 Piece, 10, 12 ga. Steel, 1/2" - 1-1/4" conduit size knockouts (hole size: 0.89" - 1.70" or 22.5 mm - 43.2 mm)?

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I want to build myself a weight lifting rack.

Any ideas on how to easily make hundreds of holes in square tubing ?

How about a knockout punch mounted in a 20T press ?

https://www.amazon.com/Greenlee-7235BB-Slug-Buster-Knockout-Conduit/dp/B000LDEZNO

Step bits are cool if you don't know what size you want, but hole punches, like this small set from Greenlee work best for clean edges IMHO. You put the cutter and receiver on either side of the metal and then tighten the bolt until a smooth hole is produced.

It is an electrician's hole punch