Conflict of interest, stated plainly: XES Netting manufactures and sells bale net wrap. We have a direct financial interest in you buying more of it, more often. Nothing below is designed to make that happen — it's designed to help you buy the correct package, in the correct quantity, at the correct time, using your own numbers. Verify every input against your own baling records and your supplier's written quote, not against anything we say here.
Most "when to buy net wrap" advice reduces to a calendar rule — buy in some window, skip another. A calendar rule can't know your baler's exact roll spec, how many rolls you actually used last year, what your supplier will confirm in writing about lead time, or how much storage space you have. Those are the things that actually determine when you should reorder, and they're all things you can look up or ask for directly. This guide walks through each one.
The four numbers and how they fit together
Everything on this page reduces to one comparison. Reorder when:
| Term | Definition | Where it comes from |
|---|---|---|
| On-hand usable inventory (OH) | Rolls of the exact compatible package, physically present, that pass inspection | Your own physical count — Step 2 |
| Expected use during lead time | Your rolls-per-day (or per-week) usage rate × your supplier's confirmed written lead time in days | Your baling log × your supplier's written confirmation |
| Safety stock (SS) | Extra rolls held to cover reasonably foreseeable variation in lead time or usage, sized to the cost of running out | A low/base/high scenario you choose — Step 5 |
| Reorder point (ROP) | Expected use during lead time + safety stock | Sum of the two rows above |
The rule: place the order when on-hand usable inventory (OH) reaches the reorder point (ROP). Everything past this point is about getting honest numbers into those four boxes.
Step 1: Confirm the roll is actually compatible
Before you count a single roll toward your inventory, confirm it's the right roll. Chamber width or bale width does not establish fit. A roll can be the correct width and still be wrong for your machine. Check all of the following against your baler's operator's manual and the roll's own printed label — not against a general size chart:
- Width — matches the width your manual specifies for your model/serial, not just the bale diameter you're producing.
- Core inside diameter and core length — must match your machine's roll-holder spec; a roll that's the right width on the wrong core won't mount.
- Usable roll length — a separate label field from core length; it's the figure you'll use for the geometric check in Step 4, not a fit gate on its own.
- Maximum roll outside diameter and mass — must fit your roll-holder's physical and weight capacity.
- Winding direction and leader/tail configuration — wound the way your threading path expects.
- Threading path — matches how your specific model routes wrap from roll to chamber.
- Spacers, brake tension setting, and controller/monitor configuration, where your machine has them — some machines require a specific spacer width or a controller setting tied to a given roll spec; not every model has a controller or an adjustable brake.
- Printed label specs — compare only the fields your manual or the package itself requires you to match. Don't assume any particular spec matters unless your manual or the label says it does.
If you run more than one baler make/model/serial, treat each as its own compatibility profile. A roll that fits one machine in your fleet is not automatically correct for another, even if both machines look similar or take the "same size" bale.
Step 2: Count only usable on-hand inventory
Physically inspect every roll before it counts toward your on-hand number. Cosmetic issues on the outer packaging don't automatically mean the net inside is unusable — quarantine and exclude these from your usable count until you've inspected the net itself and resolved the issue with your manufacturer or supplier:
- Torn, punctured, or opened outer packaging
- Staining on the outer packaging
The following are more serious and should stay excluded as stop/claim items regardless of what a closer inspection finds — work these through your supplier or manufacturer's return, claim, or disposition process rather than putting them back into usable count on your own judgment:
- Rolls that are wet or show water intrusion into the net itself
- Rolls with crushed, bent, or otherwise damaged cores
- Rolls showing visible mold
- Rolls showing rodent damage to the net
Also exclude remnants too short to reliably finish the next bale, or your current planned run, at your baler's current wrap-count setting. Only rolls that clear inspection and match the compatibility gate in Step 1 belong in your usable on-hand count. Don't automatically write off quarantined or damaged inventory — count it separately and work it through a return, claim, or other disposition rather than assuming it's a loss or folding it into your reorder math either way.
Step 3: Forecast your own projected roll use
Skip generic bales-per-acre or bale-weight rules of thumb — crop, yield, moisture, baler settings, and storage practice vary too much between operations for a universal number to hold up. Instead, build the forecast from your own accepted-bale history:
- Pull your own count of accepted bales from last season — bales that came out of the chamber properly wrapped and usable, not the gross bale count including rewraps or rejects.
- Adjust that baseline for anything changing this year that affects how many bales you'll actually produce: planned acres, number of cuttings, expected yield per cutting, and crop mix.
- The result is your projected accepted bales for the coming season — the number that feeds Step 4. Your storage plan and your baler's wrap-count setting don't change this bale count; they change how much net each bale consumes, which is a separate Step 4 input (see below), not a bale-production driver.
If you don't have last season's count logged, start logging it now. A running tally of accepted bales per roll changeout is the single most useful number for every future reorder decision on this page.
Step 4: Convert bales to rolls with your own numbers
The core formula:
Rolls needed = Projected accepted bales ÷ your conservative observed accepted-bales-per-roll, rounded up to the next whole roll
Round up, not to the nearest whole number — a fractional roll from the division still means buying a full roll. Your supplier's exact package purchase unit or minimum order quantity (for example, rolls sold only by the pallet, or a minimum order quantity above one roll) may push your actual order higher than that single-roll-rounded figure; confirm the purchase unit against your dated written quote in Step 6 before finalizing the quantity you order.
Your observed accepted bales per roll should come from your own baling records — count actual accepted bales achieved between roll changeouts over a full season or several rolls, then use a conservative (lower) figure from that observed range rather than an average or a best-case roll. Wrap count is set by your baler's controller for your specific crop and storage plan (dry hay vs. baleage, indoor vs. outdoor storage typically call for different wrap counts) — use whatever your manual and your own field results call for, not a fixed number.
Optional geometric reasonableness check: usable roll length ÷ (π × actual bale diameter × actual wraps per bale) gives a theoretical estimate you can sanity-check against your observed number — confirm usable roll length and bale diameter are expressed in the same unit (both feet or both meters) before dividing. Treat the result as a theoretical estimate, not an authority: actual net draw varies with tension, stretch, overlap, tail waste, rewraps, and leftover remnants, so it will rarely match your observed count exactly. If the two numbers disagree sharply, don't automatically assume your observed figure is the correct one either — first re-verify compatibility (Step 1) and your wrap-count and tension settings against your manual, and check your own records for logging errors, before deciding which number to trust.
Step 5: Set your reorder point
With a usage rate in hand (projected rolls needed ÷ the days/weeks you expect to use them), the reorder point has two parts:
Expected use during lead time = your usage rate × your supplier's confirmed, written lead time in days for the exact compatible package. Don't use a verbal estimate or a general industry lead-time figure — get it in writing from the specific supplier you're ordering from, for the specific package.
Safety stock has no fixed percentage. Size it to two things: how much your lead time or your own usage rate could reasonably vary, and how expensive it is if you run out — an idle baler, a delayed cutting, or falling back to costlier custom baling. Run three scenarios rather than picking one number:
| Scenario | Assumption | Safety stock implication |
|---|---|---|
| Low | Lead time and usage both track your recent average; downtime cost is manageable | Smaller safety stock — enough to cover minor day-to-day timing slack |
| Base | Lead time or usage occasionally runs longer/higher than average, based on your own history with this supplier | Moderate safety stock sized to your observed worst realistic case, not your best case |
| High | Supplier lead time slips meaningfully, or your usage spikes (e.g., a compressed cutting window), and a stockout would idle the baler during a weather window | Larger safety stock; justified by the cost of downtime, not by a fixed rule |
Reorder point (ROP) = expected use during lead time + the safety stock scenario you choose. Place the order when your on-hand usable inventory count reaches that number — not on a calendar date.
Step 6: Compare dated written quotes
Once you know how many rolls you need and by when, get dated written quotes from candidate suppliers — each quote for the exact same compatible package (same width, core, length, and label spec). Compare, don't rank:
- Delivered price, including all freight and accessorial charges
- Applicable tax
- Minimum order quantity
- Delivery window as an actual date range, not "as soon as possible"
- The supplier's stated current stock position for that exact package
- Their process for damage or shortage claims on arrival
- Return policy
- Payment terms
We're not going to tell you which supplier or price point is best — that depends on your own numbers above, and we sell the same category of product this page is helping you evaluate. Put every quote in writing and compare them side by side before you order.
Delivered cost per acceptable bale
Per-roll price alone doesn't tell you the real cost of the job, and the denominator matters as much as the numerator. Use:
Delivered cost per acceptable bale = all-in delivered cost of the rolls you expect to actually consume this season (roll price + freight + accessorials + tax) ÷ expected accepted bales from those rolls
Rolls you buy but don't consume this season aren't a cost against this season's bales — they remain inventory. That unused inventory isn't free to hold, though: it adds storage, handling, capital/interest, insurance, and obsolescence-risk cost (see Pallet or smaller orders?, below), which is a separate line item, not something to fold into this season's cost-per-bale denominator. Run the formula at your low, base, and high scenarios for yield and failure rate. A cheaper roll price can produce a higher cost per acceptable bale if it comes with more wrap failures or more remnant waste. We don't publish our own internal cost or margin figures here — this section is arithmetic for your numbers, not ours.
Pallet or smaller orders?
There's no universal answer to whether bulk buying wins — it depends on factors specific to your operation:
- Storage capacity and conditions you actually have available for the extra volume
- Handling — equipment and labor needed to move and stage a pallet versus smaller cartons
- Capital tied up in the larger order, and what that capital costs you elsewhere (opportunity cost, financing/interest)
- Insurance exposure on stored inventory
- Risk of a baler or model change before you use the inventory, which could strand incompatible rolls
- Damage or obsolescence risk over the storage period
- Supplier-relationship risk — whether depending on one large order from one supplier leaves you exposed if something goes wrong with that order
Weigh these against your own delivered-cost-per-bale math from the section above. If the smaller-quantity price only wins on paper because the sensitivity analysis ignores storage or capital cost, it isn't really cheaper.
Storing what you've already bought
Your product's manufacturer label and any accompanying technical sheet are the authoritative source for its specific storage and shelf-life guidance — not a general industry rule, and not a claim on this page. We're not going to promise a shelf-life number or a UV-degradation figure here; check the label for the product you actually bought.
Unless your product's own manufacturer label or technical sheet says otherwise, these generic precautions apply to any packaged plastic roll product used outdoors:
- Keep rolls in their sealed, original opaque packaging until you're ready to use them
- Store dry, clean, and off the floor — a pallet or shelf, not bare ground or a damp slab
- Keep away from direct sun, heat sources, and chemicals or fuels
- Protect from rodent access, which can damage cores and outer packaging
- Rotate stock FIFO — use the oldest lot/receipt date first
- Inspect cores, edges, and outer bags before each season starts, before you count anything toward usable inventory (Step 2)
Worksheet and purchase record template
Two tables to build for your own operation. The first is the preseason count/reorder worksheet described above, laid out as a running record:
| Machine + serial | Compatible package spec (width / core / length) | On-hand usable rolls | Projected rolls needed (season) | Confirmed lead time (days) | Chosen safety stock (rolls) | Reorder point (rolls) | Order-by trigger |
|---|---|---|---|---|---|---|---|
The second is a purchase record to build over time, so next year's forecast and bales-per-roll numbers come from your own history instead of a guess:
| Date | Machine + serial / manual package | Supplier | Lot/batch | Rolls received | Landed cost | Observed accepted bales | Failures / remnants noted |
|---|---|---|---|---|---|---|---|
Limitations of this framework
- This is arithmetic built from inputs you supply — on-hand count, lead time, usage rate, and cost figures. It is not a statistical demand-forecasting model, and it doesn't account for anything you don't measure or a supplier doesn't confirm in writing.
- The geometric bales-per-roll check (Step 4) is a sanity check, not a substitute for your own observed results — actual net draw varies too much with tension, stretch, tails, and rewraps for the formula alone to be authoritative.
- A supplier's written quote is not a guarantee; confirm lead time and stock position again close to your order date if timing is tight.
- We manufacture and sell bale net wrap. That's a direct conflict of interest with any advice about how much to buy or when — which is why this page is built around your own numbers and your own supplier's written commitments rather than our claims.
- This worksheet doesn't replace your baler's operator's manual for compatibility questions, or your product's manufacturer label for storage and shelf-life questions.
Frequently asked questions
What is the best time to buy net wrap?
There isn't a fixed calendar month. Reorder when your on-hand usable, compatible roll count reaches your reorder point — expected use during your supplier's confirmed written lead time, plus the safety stock you've chosen for your own risk tolerance.
How many rolls do I need?
Rolls needed = your projected accepted bales for the season ÷ your own conservative observed accepted-bales-per-roll figure, then round up to the next whole roll — your supplier's purchase unit or minimum order quantity can require rounding up further. Build the bale projection from your own accepted-bale history, adjusted for this year's planned acres, cuttings, yield, and crop mix — not a universal bales-per-acre rule.
How much safety stock should I carry?
There's no fixed percentage. Size it to the variability in your supplier's lead time and your own usage rate, and to how costly a stockout would be for your operation. Run a low, base, and high scenario rather than picking one number.
Should I buy a pallet or smaller quantities?
It depends on your storage capacity, handling ability, capital tied up, insurance exposure, risk of a baler or model change before you use the inventory, and damage or obsolescence risk — not on a universal bulk-buying rule.
What should I do with leftover rolls at the end of the season?
Check your product's manufacturer label for its specific storage and shelf-life guidance. Generally: keep sealed rolls dry, off the floor, out of direct sun and heat, protected from rodents, rotate stock FIFO, and inspect cores, edges, and outer bags before you count anything toward next season's usable inventory.
What should I do if I think a shortage is coming?
Get a dated, written confirmation of lead time and current stock position from your actual supplier for your exact compatible package. Adjust your safety stock based on that confirmed information rather than acting on general shortage rumors.
Featured photo: Bales of hay in a snow-covered field at dusk by Juliancolton, released to the public domain, via Wikimedia Commons.
