Stepped Drills & Cone Cutters
A stepped drill forms holes with increasing diameters in sheet steel. No pilot hole is required. The steps cut in a smooth motion. That gives round, burr-free holes. HSS works fine for standard steel. Titanium coating extends tool life at higher speeds. The shank shape decides compatibility. A 1/4 inch hex fits a drill driver. Cylindrical shanks suit a standard chuck. Check the maximum diameter range. That prevents ordering too big or too small. For thin sheets, choose a drill with finer steps.
Stepped drills for sheet steel
Which size or version do you need?
Stepped drills cut holes with increasing diameters in sheet steel. You do not need a pilot hole or centre punch. The steps guide the cut in a smooth motion. This keeps holes round and burr-free. Choose a drill with fine steps for thin sheet metal. This prevents the drill from grabbing or tearing. Check the maximum diameter range. This ensures you can make all the holes you need in your workpiece.
Where does ordering go wrong?
The shank form determines where you can use the drill. A 1/4-inch hexagon fits a cordless screwdriver. With a cylindrical shank, you use a drill machine. Measure the diameter of your chuck. This prevents the shank from not fitting. Also check the overall length. A long drill is harder to use in tight spots. Choose a short drill for work near the edge.
Which standard matters?
HSS is the standard for normal steel. Titanium coating extends tool life at higher speeds. Always use cutting oil when drilling. This reduces friction and keeps the edge sharp. Keep the speed low for larger diameters. This prevents overheating and a blunt drill. A sharp drill cuts faster and gives a cleaner result.
A stepped drill belongs with the complete drill range in the workshop. If you want several sizes together, look at drill assortments. For larger holes in sheet and profile, choose core drills and hole saws. Single sizes you order via single sizes.