Part 3: Techniques for Drilling on the Lathe

Now that we’ve covered the tools required for drilling on the lathe, let’s walk through the techniques that make the process both safe and effective. Drilling on the lathe comes with a learning curve—but once mastered, it can dramatically streamline your call-making workflow and improve repeatability. Below are the key methods I use in my own shop to drill barrels and inserts with consistency.

1. Center the Blank Accurately

Before you drill, make sure the blank is securely mounted and properly centered. Any misalignment can cause the bit to wander, resulting in an off-center bore that affects sound quality and aesthetic. A four-jaw chuck or collet chuck provides the best hold for accurate centerlines.

Tip: Use a center finder or mark the true center when cutting your blanks to help during mounting.

2. Start with a Pilot Hole

For longer bores—especially in insert tone channels—consider starting with a smaller pilot hole before moving to your final drill bit. This helps guide the larger bit straight and reduces stress on both the tool and the wood.

Suggested combo: Start with a 3/16” pilot before using a 1/4” or 5/8” bit.

3. Drill Slowly and Steadily

Let the lathe and bit do the work. Apply steady pressure and frequently retract the bit to clear out chips and reduce heat buildup. Rushing the process can cause tear-out, bit wobble, or even cracking.

Lathe Speed: 500–800 RPM typically works well for most hardwoods. Too fast and you’ll burn the bit or wood; too slow and the bit may grab.

4. Use a Depth Gauge or Drill Stop

For tone channels and exhausts, depth consistency is key. Use a drill stop or a visual depth marker (e.g., masking tape on the bit shaft) to ensure each call performs the same.

Consistent tone channels = consistent tuning = happier hunters.

5. Keep Bits Sharp and Clean

A dull bit will burn your wood, wander off-center, and create ragged bore walls. Sharpen your bits or replace them when they begin to dull. Keep them free of sap, resin, and debris for clean cuts.

6. Sand or Hone the Bore if Needed

Once the hole is drilled, you can lightly sand or hone the bore with fine-grit sandpaper wrapped around a dowel. This removes any chatter marks or roughness and can improve tonal clarity.

Especially helpful on insert tone channels where a smooth airflow matters most.

Conclusion

Drilling on the lathe isn’t just a convenience—it’s a technique that, when done correctly, improves call quality, build efficiency, and consistency. From centering your blank to dialing in your drilling depth, each step matters. Stick with it, refine your setup, and let the lathe become your one-stop shop for call making.