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Entering V-only cut values and reading output 5.4.3   oval method   With Oval Cut Direction set to V and your press confirmed to produce a pure vertical stretch, entering a V-only cut in the Oval Calculator is the most streamlined input workflow Spectre Clo...

Setting up: Oval Cut Direction = NONE in Settings 5.5.1   oval method   Before using the Oval Calculator, Spectre Cloud needs to know how your drill press handles oval cuts. The Oval Cut Direction setting tells the app which axis your press moves along when...

Using the oval cut chart to determine cuts manually 5.5.2   oval method   When your Oval Cut Direction is set to NONE, Spectre Cloud does not auto-suggest directional oval measurements. Instead, you determine the correct oval cut size yourself using the ova...

When NONE mode is preferable (experienced fitters, custom setups) 5.5.3   oval method   Spectre Cloud's Oval Cut Direction = NONE mode is not just a fallback for shops without directional drill presses — it is also the preferred working mode for many experi...

EDGE method explained — how pitch is placed at edge of oval 5.6.1   pitch   The EDGE method is one of the core calculation approaches available in Spectre Cloud's Oval Calculator. It determines where pitch is applied relative to the oval cut by placing the ...

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...