DIY square hole punch press

I recently bought a cheap (very cheap! $22 shipped) hole puncher shown in the first pic and was amazed at how nice it works. It punches round holes in

Maximum sheet metal punching, minimal distortion

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Square Hole Punches

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Square Hole Punches - Lee Valley Tools

These tools simplify making a square hole up to 3/8 deep in softwood or hardwood, typically used to accommodate square plugs in decorative

Square Hole Punches

4pcs 11mm 18mm 33mm 50mm Square Hole Punch DIY Craft Scrapbooking School Paper Cutter EVA Foam Geometry Flower Punching Tool - AliExpress

Square Hole Punch For Sheet Metal Clearance Store