ARROW PLANNER LESSON 3
Choose Recommended or Custom Components
The component step turns the weight and performance target into a real arrow plan. You can use a reviewed complete package or enter the shaft and parts you intend to use.
Both paths use the same connected weight, FOC, compatibility, and Dynamic Spine calculations. Choose the path that matches what you know today.
If the list of arrow parts is new to you, do not try to solve every part at once. Start with the shaft, then work from the front of the arrow to the rear while the Planner keeps a running total.
One Calculation System, Two Paths
Help Me Build My Arrow is useful when you want the Planner to narrow the reviewed catalog into complete eligible packages.
Build With My Own Components is useful when you own the parts, have a shop proposal, or want to model a setup that is not available as a reviewed package.
You can start in either place. A recommendation is not required before custom entry, and choosing custom entry does not prevent you from returning to the reviewed packages.
Help Me Build My Arrow
Each recommended package is more than a shaft suggestion. It includes a shaft size and the front and rear components needed to model a complete arrow.
The front system is the group of parts that connects the field point or broadhead to the shaft. Depending on the shaft, it may use an insert, outsert, half-out, collar, adapter, or a combination of those parts.
The rear system normally includes the nock, any nock bushing, vanes, wrap, and other weight installed near the back of the arrow.
Read these package facts together:
- Finished weight compared with target shows the complete planned weight and the exact difference above or below your selected target.
- Planned FOC shows how far the estimated balance point sits in front of the arrow’s middle and how that compares with the selected FOC range.
- Correct Spine Class shows whether the selected shaft is in the practical stiffness class sold by the manufacturer for the connected length and total front-weight plan.
- Component fit shows that the required insert, outsert, adapter, nock, vane, and other reviewed relationships are eligible together.
- Package purpose explains the main strength and tradeoff of the setup without claiming that one package is best for every hunter.

How to Decide Between Recommended Packages
Read the cards in this order:
1. Correct Spine Class: Eliminate a shaft that is outside the required stiffness class. 2. Known component fit: Confirm that the front and rear parts are reviewed for that shaft and size. 3. Planned FOC: Look for the selected hunting range, normally 13–18% when that is the goal you chose. 4. Finished weight: Compare the complete package with your selected target, not the shaft weight by itself. 5. Package purpose: Decide whether its main strength and tradeoff fit the way you hunt. 6. Price and shopping source: Compare cost only after the technical plan works.
This order keeps a close grain total from hiding the wrong shaft or an incompatible front system.
How the Packages Are Ordered
Technical eligibility comes first. The Planner must be able to support the shaft class and known component relationships before a package can be recommended.
Among eligible packages, the Planner looks for a hunting FOC within the selected guidance and a finished weight close to the target. The closest qualifying build at or below the target is normally shown first. A close build up to five grains over may be used when it provides the next approved fit and no closer under-target option fills that position.
The Value Option appears last when one is available. Price or affiliate availability does not make an incompatible package eligible.
The first package is not a command. It is the closest reviewed fit under the approved ranking rules. Compare the reason, weakness, weight difference, balance, and shaft class before using it.
Build With My Own Components
Enter the real shaft and every component that contributes weight or balance. That may include:
- shaft manufacturer, model, spine, GPI, and Prepared Shaft Cut Length;
- insert, outsert, collar, adapter, or weight system;
- field point or broadhead weight;
- nock and bushing;
- vanes and fletch count;
- wrap, lighted nock, or other rear weight; and
- additional front or rear weight used by the real setup.
Use published component weights as estimates before building. Replace them with measured values when you have the parts.
Beginner Component Terms
- Spine number: The shaft maker’s stiffness size. A smaller number, such as 300, is stiffer than a larger number, such as 400.
- GPI: Grains per inch. Multiply it by Prepared Shaft Cut Length to estimate the bare shaft weight.
- Insert: A part installed inside the shaft that receives the point or broadhead.
- Outsert or half-out: A front part that extends outside the shaft and receives the point or broadhead.
- Collar: A protective ring used with some front or rear component systems.
- Nock: The rear part that clips onto the bowstring.
- Vanes or fletching: The fins that steer and stabilize the arrow.
- Wrap: A thin material placed around the rear of the shaft, often under the vanes. Its weight still counts.
If a component name or size is uncertain, check the current manufacturer’s page before entering it as an exact fit.

Use a Saved Component Build from Gear Locker
A Component Build is the exact shaft-and-parts system you saved in the Hunting Arrow Component Finder. It confirms the reviewed fit relationships inside that component system. It is not yet a bow-specific Arrow Plan.
- Start a new Arrow Planner build or reopen the plan you want to finish.
- Complete Target & Performance and Trajectory, then open Components.
- Choose Build With My Own Components.
- Choose Use a Saved Build, then select the named system from your Gear Locker.
- Review the import preview. Confirm the exact shaft, front system, nock, vane, three- or four-fletch setup, and every saved weight before you apply it.
- Review the Planner’s recalculated results, then confirm the component build you want to carry into final review.
The Planner keeps the active plan’s bow-specific arrow length and prepared shaft cut. It recalculates the saved system’s finished weight, FOC, performance, trajectory, component fit, and Dynamic Spine. If the system does not fit the active plan, the Planner explains the conflict instead of silently substituting a different part.
Need to create or change the saved system first? Read the Component Finder How-To or open My Component Builds.
Choose Three or Four Fletches
Three and four fletches are complete build choices, not a cosmetic setting. The selected vane, number of vanes, and any wrap or rear component weight change finished weight and balance.
For most hunting arrows, three fletches are the practical starting point. They normally provide enough steering for field points, mechanical broadheads, and many well-tuned fixed-blade broadheads while keeping rear weight and drag lower. If you already have a three-fletch setup that tunes well, there is no reason to add a fourth vane simply because the Planner offers it.
Choose four fletches when the complete arrow needs more steering or rotation. That can help with a larger fixed-blade or single-bevel broadhead, a smaller vane that needs help doing the same work, or a test arrow that is not stabilizing as well as it should. Four fletches can also give you more vane area while using shorter vanes, but clearance around the rest and cables still has to be checked.
A fourth vane also adds rear weight, drag, noise, and another possible clearance point. The added rear weight can lower planned FOC slightly, and the added drag can affect downrange speed and trajectory. That does not make four fletches a bad choice, and it does not make them automatically better. It means the choice should solve a real steering or tuning need.
Choose the configuration you intend to build. The Planner carries that choice through finished weight, planned FOC, and any dependent results.
For a first build, start with the fletching configuration you already know how to tune or the one recommended by the vane and broadhead makers. If you are unsure, keep the Planner’s three-fletch default, build one complete test arrow, and let broadhead flight and tuning tell you whether a fourth vane is useful.

Explore, Apply, and Confirm
Exploring another package or changing a comparison does not replace the working build. The Planner changes the connected plan only when you use the visible action to apply that selection.
You can apply a reviewed package, switch to custom entry, change one or more values, and compare the updated result. You can also return to recommendations without losing the distinction between the working build and an unselected comparison.
Confirm This Build establishes the component plan that carries into final review and saving. Use it after the shaft, front system, broadhead, nock, fletching, and other weights match the setup you intend to test.
Think of Apply as “use this choice in the working comparison.” Think of Confirm This Build as “this is the full parts list I want to carry into final review.”

Changes That Reopen the Plan
A confirmed plan is not locked against correction. If you change the shaft, length, front weight, broadhead, nock, fletch count, vane, wrap, or another meaningful component, the Planner recalculates the connected result.
When that change affects weight, FOC, compatibility, or Correct Spine Class, review the updated result and confirm the build again. If the selected shaft leaves the Correct Spine Class, return to Components and choose a suitable shaft before treating the plan as complete.
When to Use the Standalone Calculators
The Planner is the best place to keep a complete new build connected. The individual calculators are useful when one question needs more room or you want to study an existing arrow.
Arrow Weight and Component Calculator
Use this when you want to compare several individual parts, study how GPI and shaft cut change total weight, or model a component that is not yet in the reviewed package catalog.
Arrow FOC Calculator
Use Build Mode when you want a deeper planned-balance comparison. Use Measure Mode after the test arrow is complete and you know its real balance point.
Dynamic Spine Calculator
Use this when you want to study how shaft length, available manufacturer spine, and total front weight affect the stiffness check in more detail.
The standalone calculators do not change the connected Planner record. Keep the inputs consistent, then return to the Planner and deliberately enter or apply the decision you want to save.
Component Safety and Fit
A listed component relationship means the Planner has reviewed information supporting that combination. It does not replace the current installation instructions, required adapters, adhesive guidance, cure time, inspection, or warnings supplied by the manufacturers.
Check the exact shaft size and component model before ordering. Build and tune one complete arrow before buying or completing the full batch.