Custom Harmonicas by Andrew Zajac
The most expressive harmonicas

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  • Overview of some essential tools.

Overview of some essential tools.

By Andrew | 1:34 PM EST, Thu November 05, 2026
  • Andrew's Blog

Here is a video showing the multiple uses of my reed tool, plinker and dual head reed wrench.

Reed tool: It's now flat instead of round which helps me have more control over fine movements like applying just the right amount of force to re-shape a reed.
The curved end can also be used to do quick embossing just like the classic "magic penny" method.

Plinker: Use this to plink, reshape reeds, and tune reeds up or down using a swiss file.

Dual reed Wrench: This wrench has a press-fit tolerace and works with all sizes of reed pads.

My tools: https://harp.andrewzajac.ca/Tools

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Custom diatonic harmonicas, Hohner Affiliated Customizer.
I customize Hohner Marine Band, Rocket, and Special 20 harmonicas.
Andrew Zajac, Kingston Ontario, Canada.
I use a continuous quality improvement process. I use regular evaluation and incremental steps to strive for constant improvement.
Website, text, photos, videos, download documents, designs and products by Andrew Zajac are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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