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2.3.1 Default Hole Type — Round vs. Oval

2.3.1   KEY   setting

The Default Hole Type setting controls which hole type is pre-selected when you start a new spec sheet. Spectre Cloud supports two options: Round and Oval. Like all system defaults, this setting simply pre-populates the field — it can always be overridden on a per-sheet basis without affecting your shop default.

🕳️ Understanding Hole Types

Round Holes

Round holes are the standard hole type used in the majority of drilling layouts. Drilled at a fixed diameter with a standard bit, they are the most common choice for recreational and league bowlers.

  • ✅ Used for most conventional and fingertip drilling styles
  • ✅ Compatible with standard inserts and slugs
  • ✅ Faster to drill and fit for most customers

Oval Holes

Oval holes are an elongated hole type used when a specific release technique, extra grip surface, or custom fit requires it. Spectre Cloud includes a dedicated Oval Calculator to determine the correct oval dimensions for each bowler — see Book 05 for full coverage.

  • ✅ Provides additional contact area for certain release styles
  • ✅ Often used for bowlers with grip issues or specific fit requirements
  • ✅ Oval dimensions are automatically calculated by the Oval Calculator
  • ❌ Requires additional measurement steps compared to round holes
  • ❌ Not suitable for standard insert sizing

📋 Choosing Your Default

Shop Type Recommended Default Reason
General / recreational pro shop Round Most customers receive standard round holes — saves time on every new sheet
Competitive / performance-focused shop Round or Oval Depends on your typical customer base; oval may be more common at high-level shops
Shop specialising in custom fitting Oval If the majority of your drilling involves oval holes, setting this as default reduces manual selection on every sheet

⚙️ Changing the Default Hole Type

  1. Open Spectre Cloud at cloud.spectrebowling.com and log in.
  2. Select Settings from the menu.
  3. Navigate to the Thumb Hole Preferences section.
  4. Locate the Default Hole Type field and select either Round or Oval.
  5. Changes are saved automatically.

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Note: Changing the default hole type only affects new spec sheets created after the setting is changed. Existing spec sheets are not modified.

Tip: Not sure which to pick? Start with Round — it's the right default for the vast majority of pro shops. You can always switch to Oval on a per-sheet basis for bowlers who need it, or update the default later as your shop's workflow evolves.

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