Well, drilling through hardened steel is just one of those challenges that you will more than likely come across at some point if you want to work with this durable material. However, you can do it successfully with the right tips, tools, and techniques! To help you out; In this guide we will share some super cool and easy to drill hardened steel like a pro. Let’s get started!
Tip 1 — Use a Low-Speed, High-Torque Drill. A carbide or cobalt drill bit is your best friend for this kind of work. Ideally, a drill should operate at low speed of about 400 to 600 RPM. You want the high torque also so it can push down harder without spinning too fast, as it would be doing with a low-torque motor. This allows the drill bit will not get too hot, and therefore it will have a longer life.
Idea 2 — Add lubrication to the drill bit before drilling This cutting oil is what lubricates the drill bit while it cools. This is crucial, as the bit can break or become dull when it becomes over hot. The oil also helps to drill through the formidable steel by lessening friction, which allows for freer movement by the bit.
Step 3: before drilling in the steel, make a small mark or indentation with a center punch This small mark is gives a bit of a guide to the drill, and should prevent it form slipping around when you first start drilling. It also assists by drilling a straight hole — even more crucial with many projects.
Method # 2: Enlarge the Hole Gradually After creating the pilot hole, you should enlarge the hole step by step. You can start drilling the hole first 2 and then slowly move to a slightly greater size using bigger bits. Every 1/8 to 1/4 inch or so, you may need to change to a new bit_STOCK_byte / Shutterstock Consequently, you reduce the load on the drill bit.
Tip 3: Pecking Technique A nice way to drill. In other words, you should drill for short periods instead of attempting to drill straight through all at once. Each time you break through, pull the bit out of the hole to clear metal chips and let it cool. With this method you can save the drill bit getting burned out and from breaking. Repeat this action until desired depth.
Tip 1: Go Slow! Hardened steel will not have you drilling through it in a jiffy. And it takes time and patience, caution and experience. Trying to beat the clock is a form of temptation and it might cause you more than good in that you may make mistakes — so accurate not fast!
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