How Vinyl Records Are Made (feat. Third Man Records) | WIRED

Overview

This summary describes a WIRED video tour of Third Man Records’ vinyl production process. The walkthrough covers the main manufacturing stages: lacquer cutting (mastering), electroplating to make stampers, pressing, and quality control. The video is presented as a production guide rather than a product review.

A step-by-step look at the machines, materials, and QA practices used to make vinyl records.

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Process (step-by-step)

1) Lacquer cut (mastering)

• The initial master is cut into lacquer discs (MDC lacquers from Japan). Lacquer behaves like soft nail polish and is highly sensitive to temperature, humidity, dust, oils, and other contaminants.
• A lathe (example model: VMS-70, 1974) physically engraves grooves using a stylus/cartridge. Cutting one record side takes about 2.5 hours.
• A programmer controls cut parameters: format (12” 33, 12” 45, 7”, etc.), drop-in, and runout groove location.
• Typical specs:
  • ~19 minutes per side on a 12” at 33 rpm
  • ~300–400 lines (grooves) per inch
• Environmental and tooling notes:
  • Heating is managed so the lacquer can be cut without burning.
  • Helium/nitrogen may be used to manage heat/contamination.
  • Methyl ethyl ketone is used to clean the stylus.
• Matrix numbers are hand-etched by the mastering engineer into the lacquer.

2) Electroplating → Stamper

• The lacquer is coated (silver nitrate) and electroplated in a nickel bath to create a metal stamper — a reverse/negative of the lacquer.
• Plating is often done offsite.
• Stampers are only a few millimeters thick and must be meticulously cleaned; dust, rust, or defects on a stamper will transfer to all pressings.

3) Test pressing and approval

• Test pressings are produced and checked both visually and by listening.
• Artist (or designated approver) signs off before full production begins.

4) Pressing (manufacturing)

• Raw material: PVC pellets formed into a puck (~200 g per disc) and fed from an extruder.
• Press cycle:
  • Pressing chamber is heated (around 300°F mentioned).
  • Steam/pressure spreads vinyl from the center outward.
  • Chilled water locks the shape.
  • Typical press time per cycle is short (around 45 seconds).
• Post-press: flash is trimmed from the edges. Operators monitor press hit counts and watch for audio degradation as stampers wear.
• Color and compound notes:
  • Colored and specialty vinyl mixes are common.
  • Different colors/compounds melt at different temperatures and require adjusted machine settings.
  • Black vinyl typically yields the best sonic results.

5) Quality control (visual + audio)

• Visual inspection: check flatness, label alignment, and surface defects.
• Audio QC: listen for defects such as:
  • Swishy noise (from material/pressing or stamper problems)
  • “Stitching” or “no-fill” (grooves not fully formed)
  • Other audible anomalies
• Mechanical checks:
  • If a stylus wanders, discs are measured under a microscope for off-center or wobble.
  • Press settings or stampers are adjusted based on measurements.
• Final steps: allow vinyl to flatten on a spindle, apply labels, pack, and ship.

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Materials & Chemicals Mentioned

• MDC lacquers (Japan)
• Silver nitrate (lacquer coating before plating)
• Nickel bath (electroplating)
• Methyl ethyl ketone (stylus cleaning)
• Nitrogen (contamination control)

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Practical / Tactical Takeaways

• Lacquer cutting is delicate: environment control and tooling quality strongly influence final results.
• Mastering skill and careful handling (including etching matrix numbers and avoiding contamination) are critical.
• Stampers wear out: monitor press hit counts and cleanliness to maintain consistency.
• Colored vinyl can require process adjustments and may sound different; black vinyl is generally optimal for best sound.
• Multiple QA layers (visual inspection, listening, microscopic measurement) detect different defects and guide corrective action.

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Main Speakers / Sources Cited

• WIRED (producer)
• Third Man Records (featured facility)
• “Warren” — mastering engineer (etches matrix numbers and discusses mastering/handling)
• MDC (lacquer manufacturer, Japan)
• Lathe reference: VMS-70
• Unnamed press operators and an external plating facility