Model answer: Fletch, Glue, and Cure — Complete the First Three Arrows
The worked solution #
Part A — Completed per-arrow log (what a good record looks like) #
A correctly completed log for one arrow:
Arrow # 1
Shaft markings/ID: POC-01 (pencil mark at nock end, near spine sticker)
Workspace temperature: 72°F
Feather 1 (cock feather — position 1):
Adhesive applied at: 10:04 AM
Clamp closed at: 10:04 AM
Clamp released at: 10:09 AM (5 min hold time met)
Visual inspection: lifted edges? no Squeeze-out on vane face? no
Feather 2 (position 2 — 120° from cock):
Adhesive applied at: 10:19 AM (10 min after feather 1 clamp release)
Clamp closed at: 10:19 AM
Clamp released at: 10:24 AM
Visual inspection: lifted edges? no Squeeze-out on vane face? slight, wiped with dry swab
Feather 3 (position 3 — 240° from cock):
Adhesive applied at: 10:34 AM
Clamp closed at: 10:34 AM
Clamp released at: 10:39 AM
Visual inspection: lifted edges? no Squeeze-out on vane face? no
Set aside time: 10:39 AM
Minimum full cure before handling: 10:39 AM next day (24 hours)
Total active time per arrow: approximately 40 minutes (including the inter-feather wait time). Three arrows takes roughly 2.5–3 hours of active work spread across a single session.
What the log catches: If trailing-edge lift appears on feather 3 of all three arrows, the log timestamps will show that feather 3 always had a shorter hold time — or was done at the end of a long session when you were tired and rushing. The log converts a vague “something went wrong” into a specific, correctable cause.
Part B — Nock alignment worked example #
What you are aligning: The nock slot (the notch that catches the bowstring) must end up 90 degrees from the cock feather when the arrow is on the string at full draw. At full draw, your cock feather should face away from the bow — for a left-handed shooter with a left-side shelf, the cock feather faces to the right. The nock slot catches the string, which runs vertically. So: nock slot vertical, cock feather horizontal (perpendicular). This is why the angle between them is 90 degrees.
How to confirm without a jig: Hold the arrow at arm’s length in front of a window. Rotate the arrow until the cock feather is perfectly horizontal (parallel to the floor). Sight down the shaft toward the nock. The nock slot should appear perfectly vertical — 12 o’clock and 6 o’clock. If it is tilted, the nock needs to be repositioned.
Rotate the dry nock (before adding adhesive) until the alignment is correct. Then glue.
A completed alignment check:
Arrow 1 — nock slot perpendicular to cock feather? yes
Arrow 2 — nock slot perpendicular to cock feather? initially no, rotated 15°, now yes
Arrow 3 — nock slot perpendicular to cock feather? yes
Part C — Field point installation worked example #
What “concentric” means in practice: Looking down the shaft from the nock end, the field point’s rim should appear centered on the shaft — the gap between the point rim and the shaft surface should be equal all around. If the point appears to tilt (closer on one side), it is seated off-axis. Reheat and reseat.
The tip-roll check in detail: Place the arrow on a sheet of white printer paper on a flat table. Hold the nock end very lightly — just enough contact to keep the arrow from rolling off the table — and let it roll one slow revolution. A concentric point rolls smoothly. An off-axis point hops, wobbles, or thumps once per revolution as the eccentric mass pulls the tip off the surface. The first time you see a thumping tip, you will immediately understand why this check matters — a hopping tip means the center of mass of the point is not on the shaft axis, and the arrow will fly in a spiral rather than a straight line.
A completed tip-roll log:
Arrow 1 — smooth
Arrow 2 — slight wobble; reheated, rotated point while cooling; re-check: smooth
Arrow 3 — smooth
Part D — FOC calculation worked example #
Worked numbers for the matched set:
Assume a finished arrow with:
- Total length (nock valley to point tip): 29 inches
- Midpoint: 29 ÷ 2 = 14.5 inches from nock valley
- Balance point (measured with ruler edge): 16.5 inches from nock valley
Difference: 16.5 − 14.5 = 2.0 inches
FOC% = (2.0 / 29) × 100 = 6.9%
This result (6.9%) is below the 8–12% target. The most common cause: a 100-grain point on a 29-inch shaft that weighs approximately 350–400 grains total (shaft + nock + feathers) produces a relatively low FOC. This is expected for lighter point weights on longer cedar shafts.
What to do at 6.9%:
Option 1 — Accept it and test. A 7% FOC is not catastrophic for a 40 lb target setup at 15–30 yards. Shoot the first tuning group (Module 5) and evaluate flight stability. If the arrows porpoise or fishtail after the feathers have corrected the initial paradox, increase FOC.
Option 2 — Move to 110-grain or 125-grain points. This moves the balance point forward without changing shaft length. At 125 grains, your FOC might reach 9–10% — comfortably in range.
Option 3 — Trim 1/4 inch from the nock end. This removes a small amount of rear weight and shifts the midpoint forward simultaneously. Effect is small (typically +0.5–1% FOC) but noticeable.
A correctly completed FOC calculation:
Total arrow length: 29 inches
Midpoint: 14.5 inches
Balance point: 16.5 inches
Difference: 2.0 inches
FOC%: (2.0 / 29) × 100 = 6.9%
Within 8–12%? no — slightly below
Adjustment decision: proceed to tuning with 100-grain points; move to 125-grain if tuning reveals stability issues
Why these choices #
Why one arrow at a time instead of batching?
Batching — fletching feather 1 on all 24 arrows, then feather 2, then feather 3 — is faster in theory. In practice it introduces two problems. First, you must track which feather on which shaft has had how long to cure, across 24 in-progress shafts. Second, the jig is advanced and set down repeatedly; any shift in the stop position accumulates across the batch. One arrow through completion, then the next, keeps your working state minimal and your log entries clean. It also means that if you discover a problem with the adhesive or clamp setup, you catch it on arrow 2 rather than on arrow 15 after feather 1 of every arrow has set wrong.
Why Fletch-Tite Platinum over super glue gel?
Super glue gel is faster (1–2 minute cure). The trade-off is brittleness. Cyanoacrylate forms a rigid bond — it does not flex. Natural feathers move slightly under draw-finger pressure and in flight; a rigid bond at the quill-shaft interface fails at the trailing edge where stress concentrates, producing exactly the failure mode in the validation scenario. Fletch-Tite’s water-based formula remains slightly flexible after cure, distributing stress along the full quill length instead of concentrating it at the ends.
Why measure the balance point from the nock valley specifically (not the nock tip)?
The nock valley is the consistent reference point — it is where the bowstring contacts the arrow, which is the actual functional start of the arrow’s flight path. The plastic nock adds a small amount of length behind the valley; measuring from the nock tip would include that non-flying length in your FOC calculation and produce a slightly lower (pessimistic) result. The standard formula uses nock valley to point tip, so that is the measurement you record.
Common pitfalls #
Pitfall 1 — Releasing the clamp early and “catching it” with your hand.
At minute 4, the adhesive is not cured — it is merely tacky. Holding the clamp manually and thinking you are saving time is not the same as the clamp holding the feather in the correct geometric position. The jig clamp applies consistent, aligned pressure; your hand applies variable pressure from an inconsistent angle. Release at the logged time or later, never earlier.
Pitfall 2 — The nock alignment looks right from one angle but is not confirmed from the nock end.
Beginners check nock alignment by holding the arrow horizontally and eyeballing whether the cock feather “looks perpendicular” to the nock slot. This is insufficient — a small rotational error looks correct from the side but is clearly visible when sighting down the shaft from the nock end. Always do the sight-down check. The correct view from the nock end: nock slot at vertical (12 and 6 o’clock), cock feather at horizontal (3 and 9 o’clock, or more precisely 9 o’clock for a left-handed shooter’s cock feather facing away from the bow).
Pitfall 3 — Skipping the tip-roll check because the point “looks straight.”
A crooked point can look perfectly aligned at the joint — the eccentricity is often a tiny off-center bore in the point itself, not a visible tilt at the junction. The roll check detects this because it amplifies any asymmetry through rotational inertia. Do not skip it. A hopping tip on the bench is a spiraling arrow on the range.