Louis Zocchi of GAMESCIENCE Dice at GenCon 2015

Storyline

This video isn’t a narrative with quests or characters—it’s a talk/critique by “Colonel Lewis Zocchi” (GAMESCIENCE) explaining why most commercially sold polyhedral dice are flawed, and why his company’s dice perform more reliably.

He frames the “story” as a problem–solution argument:

• Mass-produced dice can be damaged by the manufacturing/tumbling process
• That damage can make dice bias rolls and may even degrade performance over time
• His approach aims to preserve edge geometry and digit accuracy

Gameplay / Mechanics Highlights (dice performance)

• Core claim: Dice don’t generate perfect randomness if their geometry is off (dimensional differences, rounded vs. sharp edges, over-polishing, missing material, inconsistent edge radii, etc.).
• Observed consequence: Dice can become biased toward certain faces, and they may become unreliable over time, leading players to feel like they “can’t roll the saving numbers.”
• Important comparisons:
  • Edge geometry affects energy dissipation during impacts, which influences which faces get favored.
  • Digit accuracy (and avoiding over-tumbling) affects balance and how the die settles.

Key Experiments & Demonstrated Results

• Height / tall stack test (dimensional bias)

  • Zocchi stacked dice from the same source into two groups and oriented them differently (e.g., “1 facing 20” vs. “9 facing 12”).
  • One orientation produced a visibly taller stack, attributed to micrometer-measured dimensional differences across faces.
  • He argues that geometric differences make dice settle toward faces with a lower center of gravity (analogous to an egg not standing upright).

• Manufacturing process explanation (why digits/edges degrade)

  • He explains how dice makers:
    • clip sprue marks
    • use rock tumbling/polishing to remove blemishes and improve appearance
  • His claim: repeated tumbling/polishing can:
    • smooth away sharp features
    • remove small parts of digits (hooks/bars)
    • create inconsistent face sizes and edge radii

• Case study: “missing digits” and digit damage

  • He points to incomplete digit features (e.g., missing hooks or breaks on certain numbers).
  • He attributes this not to the mold itself, but to over-tumbling and unskilled sorting—dice needing more tumbling get grouped with dice that don’t.
  • He argues that each edge ends up with a unique radius, so dice may behave in a repeatable but undesirable way.

• Brand comparison: Chessex “heavy side” observation

  • He describes a test using Epsom salt solution + refrigeration to see which side floats downward.
  • He concludes that Chessex dice often have a “heavy side” (he suggests many float with one consistent heavy side).
  • He notes he hasn’t fully determined how weight distribution impacts randomness.

• Armory 30-sided die mold redesign

  • He mentions a maker (Armory) remade molds to eliminate clip marks, but:
    • this introduced gate/dip marks (a dot in the center of each zero)
  • He explains a gating strategy: inject plastic through the zero/gate, let it cure so the gate closes before opening the mold.

• Long-term reliability comparison (personal dice)

  • He describes receiving TSR dice and GameScience dice from Frederick Meyer.
  • He reports TSR dice felt unreliable after ~6 months, while his GameScience dice remained usable for years.

Strategies / Key Tips (practical takeaways for players)

• Don’t judge “randomness” by appearance alone.
• Sharp, crisp edges (regulated for casino use) may dissipate impact energy more uniformly than rounded-edge dice.
• Over-polished or over-tumbled dice can:
  • lose edge integrity
  • break digit details
  • change how the die settles, making rolls less trustworthy
• If dice feel “unlucky,” it may not be superstition—it could reflect manufacturing bias or degradation.

Gamers / Sources Featured (mentioned at end)

• Frederick Meyer
• TSR
• Chessex
• Armory
• Louis Zocchi / GAMESCIENCE (speaker and brand)
• GenCon 2015 (event context)
• “Federal law” / casino dice regulations (referenced as justification for sharp-edge requirements; not a specific person)