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A drill bit walks when its tip slides across the surface instead of cutting where you aim. Polished steel, aluminum sheet, and curved tubing are common trouble spots. The fix is usually a combination of marking the location, giving the bit a place to start, and keeping the tool square—not buying a more powerful drill.
Choose a marking method
For occasional holes, a center punch is the least expensive reliable fix. A few firm taps make a small dent that catches the bit point. Use a sharp, narrow punch and keep it upright; a broad or shallow mark may still let the bit skate. On thin sheet, tap lightly. A heavy blow can dimple the panel or raise a burr on the back.
A spring-loaded automatic center punch makes a consistent mark without a hammer, which is handy when working one-handed or marking many holes. It costs more than a basic punch and may not make a deep enough impression in hard steel, where a hammer-driven punch is often more effective. Compare automatic center punches if repeatable marks matter more than minimizing cost.
If you cannot punch the surface—for example, because it is thin, finished, or easy to dent—use a drill guide or a starter made for the material. A small carbide-tipped masonry bit is not a substitute for a metal center drill; it can chip, wander, and leave a poor start.
Compare the options
| Method | Best for | Main trade-off |
|---|---|---|
| Center punch and hammer | Steel plate, brackets, occasional holes | Cheap and effective, but takes care on thin or finished stock |
| Automatic center punch | Repeated marks or awkward access | Convenient; impact may be too light for hard steel |
| Drill guide or bushing | Accurate holes, thin stock, or a surface you should not dent | More setup; guide must be held or clamped securely |
| Split-point drill bit | Reducing initial skating on a properly aligned setup | Helps, but does not replace a mark or control on slick surfaces |
Make a reliable start
Mark the center with a fine-point marker or scribe, then punch exactly on that mark. Check the spot from two directions before drilling; a punch mark that is off-center is hard to correct later. For a row of holes, measure and mark every center first rather than using one finished hole as the reference. Small layout errors add up across a long run.
On thin sheet metal, support the work against a sacrificial wood block if practical and clamp both pieces. That limits flex and helps keep the drill from grabbing as it breaks through. A punch can still be useful, but make only a shallow dimple. If the sheet is visible or easily distorted, a clamped drill guide is the safer choice.
On round tubing, the curved surface encourages both the punch and bit to slip. Use a V-block or another stable support, clamp the tube, and make the punch mark on the crown. Do not hold tubing in your hand while drilling. If the hole needs to be positioned precisely, use a guide or drill press rather than trying to steer a handheld drill on the curve.
Drill with control
Fit a sharp bit intended for metal. A split-point bit can start more confidently than a conventional point, but even a good bit can walk if it meets smooth stock at an angle. For larger holes, drill a small pilot hole first—roughly 1/8 inch is a practical starting size for many jobs—then enlarge it. Do not make the pilot so tiny that it breaks or clogs easily. For some modern bits, the maker recommends drilling directly to size; follow the bit’s instructions.
Hold the drill perpendicular to the surface and start at low speed with light, steady pressure. Once the tip has cut a clean seat, increase speed as appropriate for the bit and material. High speed and hard pressure are a poor combination: the bit can skate, overheat, or blunt its cutting edges before it establishes a hole. Apply cutting fluid on steel when suitable, and clear chips periodically rather than forcing a stalled bit.
A hand drill is fine for many small holes when the work is clamped and the location is not critical. A drill press offers better control over angle and feed, especially for repeated holes, but it cannot compensate for a badly placed punch mark or an unsecured workpiece. For a one-off hole in a bracket, buying a press is rarely justified.
When a guide is worth buying
Buy a guide when hole placement and angle must be consistent, when the surface cannot be punched, or when you work often on round or slippery stock. A simple drill guide can be enough for straight holes; a drill press is more capable but takes space and costs more. Check that the guide accepts the bit diameter you need and can be clamped to the work. A loose guide can shift just like a loose drill.
For routine work, a sharp set of split-point metal drill bits is a useful upgrade, not a cure-all. If your current bits are sharp and you only drill a few holes, spend the money first on a center punch and clamps. If bits repeatedly skate despite a good punch mark, check for a dull or damaged point, excessive starting speed, or a drill held out of square.
Fix common mistakes
If the hole starts off-center, stop as soon as you notice. Continuing under pressure can enlarge the wrong spot or break the bit. Re-mark the intended center; for a small correction, a careful operator may angle the bit slightly to move the cut, but this is difficult to control and can damage the work. A drill guide or professional repair is safer for a visible, close-tolerance hole.
If the bit squeals, heats quickly, or produces little more than dust, stop and inspect the cutting edges. Replace or sharpen a dull bit, reduce speed, and use suitable cutting fluid. If the workpiece spins or lifts, stop and clamp it securely—never hold small metal parts by hand near a rotating drill. Eye protection is essential: metal chips are sharp and can fly even at low speed.