Use a center punch or masking tape to create a starting point
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Create a small indentation or add a grippy surface so the drill bit has a seat to register in, preventing it from skating on the first rotation.
Methods
- Center punch (metal, hard plastic): Hold the punch perpendicular to the surface on your mark and tap firmly with a hammer. The conical dimple captures the bit tip.
- Masking tape (tile, smooth surfaces): Apply one or two layers of painter's tape over the mark. The added friction prevents skating. Remove the tape once the bit has started a hole.
- Nail tap (wood, soft plastic): Tap a sharp nail on the mark to create a small starting divot, acting as an improvised center punch.
Why It Works
A twist drill bit's chisel-shaped center point pushes material sideways rather than cutting. On smooth surfaces this causes wandering. A punched dimple gives the point a pocket to sit in; tape provides friction so the cutting edges engage before the bit can slide.
Tips
- Start at the lowest speed with firm, steady pressure until the hole is established.
- One solid strike is enough for a center punch; multiple strikes can create an oversized dimple.
- On glazed tile, combine tape with very low RPM (under 500) for best results.
Created: 4/23/2025, 10:42:45 PM diylow cost
Center punch and hammer, OR masking tape, OR nail and hammer