Simply buy Round sheet metal punch with ball thrust bearing

Are homemade tools for press brake operations a good idea?

Catálogo - Trumpf - Punching-Tools En, PDF, Sheet Metal

Markar HG310 Pin and Barrel Hinge, Concealed Leaf, By Markar

GN 1150 Stainless Steel AISI 316L Cam Latches, Operating and Latch

P CTP PB M EA 4 P X 3 b07.2

Made from high-density steel It cuts and punches perfect circles in four sizes: 1” (25.4 mm), 1-1/4 (31.75 mm), 1-1/2 (38.1 mm), and 2 (50.8 mm)

Large 4 Piece 1 to 2 Circle Round Disc Cutter Set Punch Gold Silver Copper Sheet Metal Forming Coins Jewelry Making Tool

How to Build a Jet Engine! : 14 Steps (with Pictures) - Instructables

The Master 5335B Heavy-Duty 3-Hole Punch by Martin Yale offers a gel-padded handle for added comfort when drilling through paper. Features 11/32 hole diameter fixed center metal lock-down handle for storage and safety and a large-capacity no-mar chip pan. Also adjustable ruled paper guide ensures exact centering.

Master 5335B Adjustable 3-Hole Punch

BOW to Work Sheet Metal Published by: Model and Allied