The first time you overload a set of wool combs, you'll know it immediately. The moving comb drags through the fiber instead of gliding, the locks clump and resist rather than aligning, and by the time you've forced your way through a few strokes, the fiber is more tangled than when you started. It's one of the most common beginner frustrations with combing — and it's almost always a loading problem, not a technique problem.
When preparing wool with wool combs, one of the most common beginner questions is how much fiber should be loaded onto the combs. Loading too much fiber can make the combing process difficult, while loading too little fiber can slow down preparation. Learning the right fiber amount improves fiber alignment, reduces tangling, and helps wool combs work more efficiently.
Why Fiber Load Matters
Wool combs work by separating and aligning fibers as they transfer between the comb tines during the combing stroke. The tines need space to do this work — they need to be able to catch individual fibers, hold them briefly, and release them as the moving comb passes through. When the comb is overloaded, the fibers are packed too densely between the tines to move freely, and the combing stroke becomes a struggle rather than a smooth, controlled motion. The fiber cannot align properly because it has nowhere to go, and the result is a preparation that is more tangled and less consistent than what a properly loaded comb would produce.
Overloading also damages the tools over time. When combs are consistently overloaded, the tines are subjected to more lateral stress than they are designed to handle, particularly during the transfer stroke when the moving comb is pulled through the loaded comb. This stress can gradually bend or loosen tines, especially on combs with finer or more closely spaced tines. Protecting the combs by loading them correctly also protects the quality of the fiber preparation — and the longevity of the tools themselves. Learn more about opening wool locks before loading.
General Loading Guidelines and Fiber Amounts
There is no single universal answer to how much fiber to load because the right amount depends on the comb size, the fiber type, and the staple length. A useful starting point for most spinners is to load enough fiber to cover the tines loosely without packing them — the fiber should sit on the tines with some air space visible between the locks rather than being pressed together into a dense mass. For a standard single-row comb, this typically means loading a small handful of opened locks, perhaps 10 to 20 grams depending on the fiber density. It is always better to start with less than you think you need and add more if the combing goes smoothly.
| Fiber Amount | Effect During Combing | What to Do |
|---|---|---|
| Too much fiber | Fibers jam between tines; labored combing | Remove a portion and process in two loads |
| Moderate amount | Smooth fiber transfer; good alignment | Continue — this is the target |
| Very small amount | Slower preparation but easy handling | Fine for beginners; add slightly more as skill builds |
A double-row comb has more tines than a single-row comb of the same width, which means it can hold more fiber without becoming overloaded — roughly twice the load of a comparable single-row comb as a general rule. However, this does not mean double-row combs should always be loaded to their maximum capacity. Starting with a moderate load and adjusting based on how the combing feels is still the best approach regardless of the number of rows.
How to Distribute Fiber on the Comb
Even fiber distribution across the tines is just as important as the total fiber amount. When fiber is loaded unevenly — with a thick clump in one area and sparse coverage in another — the combing stroke produces uneven results. The overloaded section resists the combing motion while the sparse section offers little resistance, which makes it difficult to control the stroke and produces a preparation with inconsistent fiber density. The goal is to spread the fiber evenly across all the tines so that each tine carries a similar amount of fiber and the combing stroke feels consistent from one end of the comb to the other.
The fiber should be placed on the tines gently, with the locks draped over the tines rather than pushed onto them, so that the fiber hangs loosely and can be drawn through the tines smoothly during combing. Keep the fiber aligned in the same direction — root ends together, tip ends together — as you load. Loading fiber in random orientations mixes the root-to-tip directionality that makes worsted preparation effective. Learn more about why staple length matters when combing.
Factors That Affect the Right Load
The ideal fiber amount varies depending on several interconnected factors. Staple length is one of the most important — longer staple fiber takes up more space on the tines and is more prone to tangling if overloaded, so longer staple fleeces generally require smaller loads than shorter staple fleeces. Fiber density also matters significantly: a dense, fine fiber like Merino packs more mass into a smaller volume than a coarser, more open fiber, so the same visual handful of Merino may actually be a heavier load than it appears. Comb tine spacing affects how much fiber can pass through the tines freely — fine-tined combs designed for fine fiber require lighter loading than coarser combs designed for longwool breeds.
| Factor | Influence on Fiber Load |
|---|---|
| Staple length | Longer staples require smaller loads — more prone to tangling if overloaded |
| Fiber density | Dense fibers (e.g. Merino) require lighter loading than coarser open fibers |
| Comb tine spacing | Fine-tined combs require lighter loading than coarser-tined combs |
| Number of comb rows | Double-row combs hold roughly twice the load of single-row combs |
Understanding these variables helps determine appropriate fiber amounts for different fleeces and different combs. As you gain experience with a particular comb and a particular fiber type, the right load becomes intuitive — but until then, erring light and adjusting upward is always the safer approach.
Reading the Signs: Too Much, Too Little, Just Right
The clearest indicator of correct loading is how the combing feels and looks during the transfer stroke. When the load is right, the moving comb passes through the fiber on the stationary comb with moderate, consistent resistance — not effortless, but not a struggle either. The fiber should transfer progressively from the stationary comb to the moving comb with each stroke, and after several passes the fiber on the moving comb should be visibly more aligned and parallel than when it started. Fiber transfers easily between combs, fibers align smoothly, and there is minimal resistance during combing — these are the signs of a well-loaded comb.
If the combing feels labored, the fiber is clumping rather than aligning, or the tines are catching and dragging, the comb is likely overloaded. The fix is straightforward: grasp a portion of the fiber near the base of the tines and gently pull it free, then set it aside to be loaded in a separate session. If the fiber has already been partially combed and is tangled around the tines, it may be easier to remove all the fiber, separate it into two smaller loads, and process each load individually. Going forward, the best approach is to err on the side of loading less — two small loads take only a few extra minutes but consistently produce better results because the fiber has room to move and align properly. Learn more about how to diz fiber from combs.
Building Intuition Through Practice
Determining the ideal fiber amount becomes easier with experience. As spinners gain familiarity with their combs and fibers, they develop a sense of how much fiber works best — a feel for the right weight in the hand, the right visual coverage on the tines, and the right resistance during the first stroke. This intuition is built through repetition with different fiber types, different staple lengths, and different comb configurations. Practicing with a range of fleeces — from fine Merino to longwool breeds — accelerates this learning because each fiber type presents different loading challenges and teaches different lessons about how the combs respond.
Beginners should err light and adjust upward as their technique develops. The cost of loading too little is a few extra minutes of processing time. The cost of loading too much is tangled fiber, poor alignment, and potential damage to the tools. Starting conservatively and building confidence gradually is the approach that produces the best results and the most enjoyable combing experience. Learn more about which wool breeds work best for wool combing.
Key Takeaways
- Load enough fiber to cover the tines loosely with air space visible between locks — for a standard single-row comb, this is roughly 10–20 grams of opened locks
- Always start with less than you think you need — it is easier to process two small loads than to remove excess fiber from an overloaded comb
- Never pack fiber tightly onto the tines — locks should be draped loosely so they can be drawn through the tines freely during the transfer stroke
- Spread fiber evenly across all the tines — thick clumps in one area cause uneven alignment and make the combing stroke harder to control
- Longer staple fiber and denser fiber (like Merino) require lighter loads — the same visual handful can be a much heavier load depending on fiber type
- A double-row comb can handle roughly twice the load of a comparable single-row comb — but moderate loading still produces better results than maximum loading
- Consistent overloading bends and loosens tines over time — protecting the combs by loading correctly also protects the quality of the fiber preparation
- Correct loading feels like moderate, consistent resistance during the transfer stroke — labored combing or clumping fiber means the comb is overloaded
- Experience with different fiber types builds intuition for the right load — beginners should err light and adjust upward as their technique develops
Frequently Asked Questions
How much wool should I load on combs?
There is no single universal answer because the right amount depends on the comb size, the fiber type, and the staple length — but a useful starting point for most spinners is to load enough fiber to cover the tines loosely without packing them. As a rough guideline, the fiber should sit on the tines with some air space visible between the locks rather than being pressed together into a dense mass. For a standard single-row comb, this typically means loading a small handful of opened locks — perhaps 10 to 20 grams depending on the fiber density. It is always better to start with less than you think you need and add more if the combing goes smoothly, because removing excess fiber from an overloaded comb is more disruptive than adding a second small load after the first is processed.
Can loading too much fiber damage combs?
Yes, over time. When combs are consistently overloaded, the tines are subjected to more lateral stress than they are designed to handle, particularly during the transfer stroke when the moving comb is pulled through the loaded comb. This stress can gradually bend or loosen tines, especially on combs with finer or more closely spaced tines. Beyond physical damage to the tool, overloading also produces poor results — the fiber cannot move freely through the tines, so it does not align properly, and the combed preparation ends up with more tangling and less consistent fiber orientation than a properly loaded comb would produce. Protecting the combs by loading them appropriately also protects the quality of the fiber preparation.
Should fiber be packed tightly onto the comb?
No — packing fiber tightly onto the comb is one of the most common loading mistakes. The purpose of the comb tines is to allow fiber to move through them freely during the transfer stroke, and tightly packed fiber cannot do this. When fiber is pressed firmly onto the tines, it locks in place and resists the combing motion, which means the spinner has to use more force to move the combs, which increases the risk of fiber breakage and tine damage. The fiber should be placed on the tines gently, with the locks draped over the tines rather than pushed onto them, so that the fiber hangs loosely and can be drawn through the tines smoothly during combing.
Does fiber type affect loading amount?
Yes, significantly. Fiber type affects loading in several interconnected ways. Staple length is one of the most important factors — longer staple fiber takes up more space on the tines and is more prone to tangling if overloaded, so longer staple fleeces generally require smaller loads than shorter staple fleeces. Fiber density also matters — a dense, fine fiber like Merino packs more mass into a smaller volume than a coarser, more open fiber, so the same visual amount of Merino may actually be a heavier load than it appears. Comb tine spacing affects how much fiber can pass through the tines freely — fine-tined combs designed for fine fiber require lighter loading than coarser combs designed for longwool breeds.
How do I know if I loaded the right amount of fiber?
The clearest indicator of correct loading is how the combing feels and looks during the transfer stroke. When the load is right, the moving comb passes through the fiber on the stationary comb with moderate, consistent resistance — not effortless, but not a struggle either. The fiber should transfer progressively from the stationary comb to the moving comb with each stroke, and after several passes the fiber on the moving comb should be visibly more aligned and parallel than when it started. If the combing feels smooth and the fiber is aligning well after two or three passes, the load is appropriate. If the combing feels labored, the fiber is clumping rather than aligning, or the tines are catching and dragging, the comb is likely overloaded.
What should I do if I loaded too much fiber?
The simplest fix is to remove some fiber from the comb before continuing. Grasp a portion of the fiber near the base of the tines and gently pull it free, then set it aside to be loaded in a separate session. If the fiber has already been partially combed and is tangled around the tines, it may be easier to remove all the fiber, separate it into two smaller loads, and process each load individually. Going forward, the best approach is to err on the side of loading less rather than more — it takes only a few extra minutes to process two small loads instead of one large one, and the results are consistently better with smaller loads because the fiber has room to move and align properly.
Does the number of comb rows affect how much fiber I should load?
Yes, directly. A double-row comb has more tines than a single-row comb of the same width, which means it can hold more fiber without becoming overloaded. The additional row of tines provides more surface area for the fiber to rest on and more pathways for the fiber to move through during the transfer stroke. As a general rule, a double-row comb can handle roughly twice the fiber load of a comparable single-row comb before showing signs of overloading. However, this does not mean double-row combs should always be loaded to their maximum capacity — starting with a moderate load and adjusting based on how the combing feels is still the best approach regardless of the number of rows.
Should I load the same amount of fiber on both combs?
In the standard wool combing technique, fiber is loaded only onto the stationary comb at the start of each session — the second comb begins empty and accumulates fiber as it is transferred from the stationary comb during the combing strokes. So the question of loading both combs equally does not typically arise in normal combing practice. However, if you are using a technique where fiber is loaded onto both combs simultaneously for blending purposes, it is generally best to load equal amounts on each comb so that the fiber transfers evenly in both directions and the blend is consistent. Unequal loading in a blending setup tends to produce uneven results because one comb will exhaust its fiber before the other.
Should I open the locks before loading them onto the combs?
Yes — opening the locks before loading is one of the most effective ways to improve the combing process. After washing and drying, wool locks often compress and the fibers stick together slightly, particularly if the fleece had significant lanolin or tightly crimped fiber. A compact, unopened lock loaded onto a comb tends to clump on the tines rather than spreading evenly, which produces uneven fiber density in the finished preparation. Gently opening each lock by hand — holding the tip and teasing the fibers apart from the base — loosens the compact structure, allows the fiber to spread naturally across the tines, and removes small debris that becomes visible as the lock opens. The few extra seconds spent opening each lock before loading consistently produce better combing results and a smoother finished top.
What does overloaded combing do to the finished top?
Overloading typically produces combed top that is less smooth, less evenly aligned, and contains more short fiber and debris than top produced from a properly loaded comb. When the charge is too dense, the tines cannot separate and align the fibers as thoroughly because there is too much fiber competing for space between them. The resulting top may feel lumpier, draft less smoothly, and produce less consistent yarn. In some cases, overloading also causes fiber breakage during the transfer stroke, which shortens the effective staple length of the combed top and makes it harder to spin. The difference between top combed from a properly loaded comb and an overloaded one is often immediately visible — properly loaded top has a smooth, parallel appearance, while overloaded top looks more tangled and uneven.
Can I re-load the same fiber for another combing pass?
Yes — this is a normal and expected part of the combing process. After transferring fiber from the stationary comb to the moving comb, you can transfer it back again for another pass. Each additional pass improves fiber alignment, removes more short fibers and debris as noil, and produces a smoother, more consistent top. Most spinners do three to five passes before drawing the fiber off through a diz, though the exact number depends on the fiber type and how smooth a preparation is needed. Re-loading in this sense is simply continuing to work the same batch of fiber until it reaches the alignment you want — it is different from adding new raw fiber to the comb, and it does not require adjusting the load amount since the fiber volume decreases slightly with each pass as noil is removed.
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