The workload being modeled
This scenario asks whether the equipment clears one 100-shirt order inside two seven-hour production days. That is a different question from monthly capacity.
| Target | 100 good pieces in the modeled window |
|---|---|
| Design | 8,000 stitches per piece |
| Order mix | flat garments |
| Average same-design batch | 24 pieces |
| Production window | 2 days × 7 hours/day |
| Model allowance | 3% rejects/rework; one operator |
What the same workload looks like on different architectures
The numbers below use the same assumptions as the main planner: 1.45 minutes per 1,000 stitches for flat goods, 2.10 for caps, 1.4 minutes handling for flats, 2.8 for caps and one operator. They are planning examples—not manufacturer ratings.
| Setup | Modeled rate | Good pieces/window | Head utilization | First bottleneck |
|---|---|---|---|---|
| 1 single-head | 5.2/hr | 70 | 100% | Machine |
| 2 independent single-heads | 10.3/hr | 140 | 100% | Machine |
| 2-head synchronized | 10.3/hr | 140 | 100% | Machine |
| 4-head synchronized | 20.7/hr | 281 | 100% | Machine |
| 6-head synchronized | 31.0/hr | 421 | 100% | Machine |
The decision this scenario is actually testing
This is why deadline calculators are often more useful than monthly capacity calculators. If most orders are small but one recurring customer sends 100-piece rush jobs, the rush job—not the monthly average—may define the required equipment.
Before using this to buy equipment
- Time several real jobs and replace the minutes-per-1,000-stitches assumption.
- Measure hooping/loading time separately from sewing time.
- Use the actual same-design batch size, not invoice quantity.
- Add downtime, maintenance and staffing constraints that matter in your shop.
- Run the shortest real customer deadline, not only the average week.
Questions this example should answer
Can I simply run longer hours instead of buying another head?
Sometimes. Compare overtime, operator availability and how often the deadline occurs. A rare rush may be cheaper to absorb with scheduling than with permanent equipment.
Why does batch size matter on a 100-piece order?
A synchronized machine needs enough identical pieces to keep its heads occupied. The last partial cycle creates some unavoidable unused head positions.
Planning estimate only. The examples on this page are transparent assumptions, not a claim about the sustained output of any specific embroidery machine.