A raw material store's total balance can look perfectly healthy while one specific roll on the cutting table is nearly finished. If nobody tracks that roll's own remaining balance, it can run out mid-layer, stopping the cutting line even though the store as a whole holds plenty of fabric. This lesson teaches how to record a roll's own starting balance and subtract each cut from it, using the same fabric consumption standard from Order A applied to a domestic replenishment style Delta Garments makes for Cedar & Co.
Without per-roll tracking, a storekeeper only ever knows the total kilograms sitting in the raw material store, never which individual roll is closest to empty. This lesson closes that gap.
You need: the idea of a material issue and an issue slip, and the fabric consumption calculation, both from Lesson 2.
By the end of this lesson you can:
Not covered here: issuing fabric in daily batches (Lesson 2), or reconciling the store's own count against actual usage (Lesson 4). This lesson only teaches how to track one roll's own balance.
| Term | Meaning |
|---|---|
| Roll balance | The quantity of fabric still remaining on one specific roll after each cut is taken from it, tracked roll by roll rather than only as a total store balance. |
| Roll | A length of fabric wound onto a cylindrical core for storage and transport. |
| Fabric consumption | The amount of fabric (by weight or length) one garment piece uses, the basis for calculating an order's total fabric requirement. |
| Marker wastage | Fabric lost during cutting because pattern pieces never fill a cutting layout perfectly; a separate allowance from combing waste. |
| Material issue | Releasing a measured quantity of fabric or trims from the raw material store to the cutting room or production line, recorded against a specific order. |
| Raw material store | The store that holds fabric, trims and other inputs before they are issued to cutting or production, distinct from a store that holds completed units. |
The raw material store's total balance is the sum of every roll it holds, but a cutting layer is cut from one roll, or a small named group of rolls, at a time. A store showing 900 kg in total can still have a specific roll with only 5 kg left on it, and if that roll is loaded onto the cutting table without checking its own remaining balance first, it can run out partway through a layer, stopping the cutting line even though the store as a whole is far from empty.
| What can differ | The shapes you meet | Why it matters to you |
|---|---|---|
| Business model | A Make to Order factory like Delta Garments tracks a roll's own balance against one confirmed order's own cutting plan, such as Order A. A Make to Stock factory, replenishing Cedar & Co.'s own shops from a rolling forecast, tracks the same roll balance against a series of smaller repeat batches instead of one fixed order quantity. | The batch sizes differ, but the need to track each roll's own balance separately from the store total applies to both models equally. |
| Product family | A garment factory tracks a fabric roll's own remaining length or weight; a hosiery mill tracks a yarn cone's own remaining weight; a home-textiles converter tracks a fabric roll's own remaining length on its cutting table; a terry mill tracks yarn on a beam rather than a finished-fabric roll. | The unit tracked changes by product family, but every one of them still needs its own running balance, not just a store total. |
| Market | An export order under a fixed shipment date needs a roll swap planned early enough that it never delays a scheduled cutting session. A domestic Make to Stock order, like Cedar & Co.'s replenishment batches, has more flexibility to pause and swap a roll between smaller cutting runs. | A tighter export deadline makes early roll-balance tracking more urgent, not the tracking method itself different. |
| How the standard consumption is reused | Delta Garments applies the same 0.205 kg per piece consumption standard used on Order A's T-shirt to a similar basic T-shirt style made for Cedar & Co., since both are basic cotton T-shirts of a similar weight and cut. | A proven consumption standard can be reused across similar styles instead of recalculated from scratch, as long as the style is genuinely similar. |
Cedar & Co., a local brand with 12 shops, orders repeat batches of a basic T-shirt from Delta Garments to replenish its own shops, made to stock against Cedar & Co.'s rolling sales forecast rather than one dated export shipment. Because the style is a similar basic cotton T-shirt style to Order A, Delta Garments applies the same fabric consumption standard, 0.205 kg per piece, to this domestic style.
The storekeeper loads one roll, starting at 120 kg, onto the cutting table for the first batch. Instead of only checking the raw material store's total balance, the storekeeper records this roll's own starting balance and updates it after every cut taken from it.
The worked numberA third batch of even 40 pieces would need 40 × 0.205 = 8.2 kg, more than the roll's remaining 7.25 kg. Tracking the roll's own balance after each cut catches this before the roll is loaded for a third layer, rather than discovering the shortfall partway through cutting when the roll physically runs out.
A storekeeper who only watches the store's total balance has no way to know that one specific roll, already partly used on earlier cuts, is close to empty. The cost of this mistake is a cutting line stopped mid-layer when the roll physically runs out, wasting the layer's setup time, the partly cut layer's own fabric if it cannot be finished from the same roll, and the operators' time waiting for a replacement roll to be brought and set up.
A raw material store's total balance does not tell you about one specific roll. A roll can be nearly empty even while the store overall holds plenty of fabric. Tracking each roll's own balance after every cut, and comparing it to what the next batch needs, catches a nearly finished roll before it is loaded again, so it can be swapped in a planned way instead of running out in the middle of cutting. The same reusable consumption standard that works for an export order works just as well for a domestic replenishment batch, once each roll is tracked on its own.
Omar wants to confirm the next replenishment batch, 195 pieces, can be cut without delay. The storekeeper checks the roll used for the last two cuts, which shows a remaining balance of 7.25 kg after cut 2 above.
Should the storekeeper load the current roll for the next batch and top it up mid-cut from the fresh roll if it runs short? Decide before opening the answer.
No. The storekeeper should swap in the fresh roll before starting the next batch, since the current roll's own remaining balance of 7.25 kg is far below the 39.975 kg the batch needs.
1. 7.25 kg cannot cut anywhere near 195 pieces, which need 39.975 kg; loading the nearly empty roll first would guarantee a stoppage partway through the layer. 2. Switching rolls mid-layer, rather than before the layer starts, risks a shade mismatch between the two rolls on pieces cut from each, a defect Cedar & Co.'s shops would notice. 3. Swapping to the fresh roll before cutting starts is a planned change, not an emergency one, keeping the batch on a single consistent roll and avoiding both the stoppage and the shade-mismatch risk.
Checking the roll's own balance against the batch's own need, before loading it, is what turns this into a simple planned swap instead of a stoppage discovered mid-layer.
Order A carries a FOB price of USD 3.20 per piece on 15,000 pieces, giving:
Delta Garments' cutting room and its raw material store serve both Order A and Cedar & Co.'s domestic batches from the same team and the same floor. A mid-layer stoppage on a Cedar & Co. batch, caused by an untracked roll running out, does not cost Order A's fabric directly, but it does cost the cutting team's time: an unplanned stoppage of even 20 minutes to fetch and set up a replacement roll takes operators away from Order A's own cutting schedule for that period, on an order whose 16-week timeline has no slack built into its 2-week sewing stage. Tracking each roll's own balance costs nothing beyond a few seconds of arithmetic after each cut, and avoids handing that lost time to an order that cannot afford it.
Use the T24-C02 Raw material store tracker workbook, "Roll balance log" sheet. For each roll, record its starting balance, each cut's own consumption, the updated remaining balance, and whether it is flagged for replacement. Start with the Cedar & Co. roll example above, then add your own rolls.
[Download the Raw material store tracker workbook](../../templates/T24-C02-raw-material-store-tracker.xlsx)
1. Why can a raw material store's healthy total balance still hide a problem on the cutting table?
2. A roll starts at 80 kg. Cut 1 uses 30 kg and cut 2 uses 35 kg. The next planned batch needs 20 kg. Should the roll be used for the next batch without checking further?
| EN | AR | FR | TR | Meaning |
|---|---|---|---|---|
| Roll balance | رصيد اللفة | Solde du rouleau | Top bakiyesi | The quantity of fabric still remaining on one specific roll after each cut is taken from it, tracked roll by roll rather than only as a total store balance. |
| Roll | لفة القماش | Rouleau | Top | A length of fabric wound onto a cylindrical core for storage and transport. |
| Fabric consumption | استهلاك القماش | Consommation de tissu | Kumaş tüketimi | The amount of fabric (by weight or length) one garment piece uses, the basis for calculating an order's total fabric requirement. |
| Marker wastage | فاقد الماركر | Perte de placement (marker) | Marker firesi | Fabric lost during cutting because pattern pieces never fill a cutting layout perfectly; a separate allowance from combing waste. |
| Material issue | صرف المواد | Sortie de matière | Malzeme çıkışı | Releasing a measured quantity of fabric or trims from the raw material store to the cutting room or production line, recorded against a specific order. |
| Raw material store | مخزن المواد الخام | Magasin de matières premières | Hammadde deposu | The store that holds fabric, trims and other inputs before they are issued to cutting or production, distinct from a store that holds completed units. |
Next you will learn how to reconcile a raw material store's own physical count against what production actually consumed, so a genuine shortage or an administrative error is caught and explained. Back to the course map