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CENTER method explained — how pitch is placed at center of oval 5.6.2   pitch   The CENTER method is the second oval calculation approach available in Spectre Cloud's Oval Calculator. Where the EDGE method anchors pitch to the leading edge of the oval cut, ...

EDGE with and without Add Pitch Thumb — comparison 5.6.3   pitch   When using the EDGE method in Spectre Cloud's Oval Calculator, a secondary option becomes relevant: Add Pitch Thumb. This setting controls whether the thumb hole's pitch is factored into the...

CENTER with and without Add Pitch Thumb — comparison 5.6.4   pitch   Just as the EDGE method can be run with or without the Add Pitch Thumb option, the CENTER method offers the same choice. The underlying question is identical — should the thumb's pitch val...

Choosing EDGE vs. CENTER: which method fits which bowler? 5.6.5   TIP   guide   With four calculation configurations available in Spectre Cloud's Oval Calculator — EDGE and CENTER, each with or without Add Pitch Thumb — the practical question every operator...

1° vs. 5° Oval Degree increments and their precision impact 5.6.6   pitch   When Spectre Cloud calculates oval cuts, one of the underlying settings controls how finely the oval angle is expressed: the Oval Degree increment. This setting determines whether o...

Using "Flip V/H on oval cuts" to match your machine's axis 5.7.1   calibration   When Spectre Cloud outputs oval cut directions, it displays them relative to a default axis orientation. Depending on how your drill press is set up — and how you physically or...

Worked example: how flipping V/H changes the output numbers 5.7.2   example   The previous page explained what the Flip V/H on Oval Cuts setting does conceptually — it swaps the Vertical and Horizontal axis labels on oval cut outputs to match your drill pre...

Step 1 — Create the bowler profile 6.1.1   KEY   workflow   Drilling your first ball in Spectre Cloud begins before you ever touch the drill press — it starts with setting up the bowler's profile. The bowler profile is the foundation every spec sheet, arsen...

Step 2 — Create a blank spec sheet for the ball 6.1.2   workflow   With the bowler profile saved, the next step in the first-ball workflow is creating a blank spec sheet for the ball you are about to drill. The spec sheet is where all of the fitting data li...

Step 3 — Set grip type and enter finger measurements 6.1.3   workflow   With a blank spec sheet open, Step 3 is where the physical fitting begins. Before any spans or pitches are recorded, Spectre Cloud needs two foundational pieces of information: the bowl...

Step 4 — Enter thumb information (round or oval) 6.1.4   workflow   With grip type and finger measurements recorded, Step 4 turns to the thumb — the anchor of the grip and the hole that most directly influences a bowler's release. In Spectre Cloud, thumb en...

Step 5 — Select layout (VLS, 2LS, PAL, or manual) 6.1.5   workflow   With the bowler's grip measurements and thumb information in place, Step 5 moves to the ball layout — the drilling angle that determines how the ball's core is oriented relative to the bow...

Step 6 — Add ball to the arsenal section 6.1.6   workflow   Before drilling begins, Step 6 takes a short detour from the spec sheet to register the ball itself in Spectre Cloud's Arsenal section. The Arsenal is the bowler's equipment inventory — a permanent...

Step 7 — Review, print, or share the spec sheet 6.1.7   workflow   With the spec sheet complete and the ball registered in the Arsenal, Step 7 is the last checkpoint before drilling begins. This is the moment to review every value on the spec sheet, catch a...

Common mistakes on the first ball and how to avoid them 6.1.8   TIP   guide   Even experienced pro shop operators make mistakes on a first-ball drilling — not because they do not know what they are doing, but because first-ball fittings involve more variabl...

What is the Arsenal section and how it connects to spec sheets 7.1.1   concept   The Arsenal is Spectre Cloud's ball inventory system — a per-bowler record of every piece of equipment they have had drilled at your shop. Where spec sheets capture the how of ...

  Adding a ball to a bowler's arsenal Adding a ball to a bowler's Arsenal is a quick process — but doing it carefully, with accurate details and a consistent naming convention, is what makes the Arsenal useful over the long term. This page covers the ful...

Hole Depth option — setting desired depth for each hole 7.1.3   NEW   arsenal   When drilling a bowling ball, hole depth is not a fixed value — it varies by bowler, ball construction, and fitting intent. Spectre Cloud's Hole Depth option allows you to recor...

  Viewing and editing ball details in the arsenal Once a ball has been added to a bowler's Arsenal, its entry is a living record — not a set-and-forget note. Ball details change over time: status shifts from Active to Retired, surface notes accumulate, s...

Suggested Layouts feature — using bowler data to suggest a layout 7.1.5   arsenal   The Suggested Layouts feature is part of the Arsenal Plus plugin ($5 USD/month) and uses a combination of the bowler's recorded data and the ball's core specifications to su...