Piano Regulation, Voicing & Repair: The Tools Behind the Craft

At Melbourne Piano Pro, our work goes well beyond tuning. Regulating a piano's touch, voicing its tone, and repairing worn or damaged parts all rely on a specific set of precision tools built for the job. Here's a look at the tools we use and what each one does.

Regulation Tools

Regulation is the process of adjusting a piano's action so every key responds evenly and predictably. It relies on small, precise adjustments made with specialised tools:

• Key spacing ruler – checks and adjusts the gaps between keys for even spacing across the keyboard.

• Capstan wrench – fine-tunes the capstan screws that control how a key connects to its hammer.

• Action regulator (let-off and jack tools) – sets how far a hammer travels before it releases, which affects touch and repetition.

• Aftertouch and dip block gauges – measure key dip and aftertouch to keep touch consistent across the keyboard.

Voicing Tools

Voicing shapes the piano's tone, from bright and clear to warm and mellow, by working directly on the hammer felt:

• Voicing needles – inserted into the hammer felt to soften a tone that's too bright or harsh.

• Hammer hardener and solution – used sparingly to firm up felt that's gone too soft, brightening a dull tone.

• Hammer file and shaper – reshapes worn hammer heads so they strike the strings cleanly and evenly.

Repair Tools

General repair work calls for a broader kit built to handle everything from a single broken string to a full action rebuild:

• Tuning hammer (lever) – the core tool for adjusting string tension during tuning and after repairs.

• String cutters and looping pliers – used to replace broken or worn strings safely.

• Screwdrivers, spring hooks, and precision pliers – handle the many small screws, springs, and clips inside the action.

• Glue, clamps, and replacement felts or leathers – repair or replace worn action parts so everything moves smoothly again.

Every one of these tools plays a part in keeping a piano playing and sounding its best. If your piano feels uneven under your fingers or its tone isn't what it used to be, Melbourne Piano Pro is here to help — get in touch to book a service or repair.