Improvised step bit. Your browser does not support the video tag. Previously: Step drill bit - GIF Dropping a water-filled balloon on a step bit - GIF Countersink drill bit - GIF Combination drill and tap - GIF Tee forming drill - GIF and video
New plans added on 11/20: Click here for 2,589 plans for homemade tools.
Inner (Oct 1, 2022), kboy0076 (Jan 28, 2024), Little Rabbit (Oct 5, 2022), mdhatter3 (Sep 30, 2022), nova_robotics (Oct 4, 2022)
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