WO-2026-0033
Complete Assembly5 × 4D Chair – Birch · replenishment for the shelf
Planned › Cut & machined › On the bench › Finishing › Complete
Due 08 Sep 2026
Pick list — 5 off the bill of material
Every quantity here is the bill multiplied out. Running the build takes them out of stock.
| Code | Material | Required | Issued | On hand | Unit cost | Line cost |
|---|---|---|---|---|---|---|
| MAT-BP18-BB | Birch plywood 2440×1220 × 18mm BB/BB | 2 sheet | 2 | 166 | $218.50 | $437.00 |
| MAT-BIR-EDG | Birch edging tape 22mm, per lineal m | 30 lm | 30 | 2,011 | $2.95 | $88.50 |
| FIN-OIL-CL | Hardwax oil, clear, low-tox — per litre | 0.7 L | 0.7 | 79.43 | $62.50 | $43.75 |
| FIN-SAND-120 | Abrasive belt 120 grit | 1.2 ea | 1.2 | 29 | $8.90 | $10.68 |
| HW-CONF-50 | Confirmat screw 7×50 | 170 ea | 170 | 12,195 | $0.18 | $30.60 |
| HW-SWIV-4D | Swivel mechanism, 4D seat | 5 ea | 5 | 85 | $42.50 | $212.50 |
| HW-GLIDE | Felt glide, screw-in | 20 ea | 20 | 644 | $0.95 | $19.00 |
| PKG-CTN-M | Carton, medium, double wall | 5 ea | 5 | 1,057 | $4.80 | $24.00 |
| PKG-CORNER | Corner board, per lineal m | 10 lm | 10 | 1,362 | $0.85 | $8.50 |
| Materials | $874.53 | |||||
Bench time booked
Each booking costs at the rate of the bench that did the work — CNC is dearer than sanding
| When | Who | Bench | At stage | Minutes | Rate / h | Cost |
|---|---|---|---|---|---|---|
| 10 Aug 2026, 8:00 am | Wiremu Ngata | CNC Router | Cut & machined | 122 | $115.00 | $233.83 |
| 11 Aug 2026, 1:45 pm | Anahera Wilson | Sanding | On the bench | 57 | $82.00 | $77.90 |
| 14 Aug 2026, 4:55 pm | Tane Rangi | Assembly | On the bench | 128 | $94.00 | $200.53 |
| 17 Aug 2026, 9:20 am | Raj Patel | Finishing | Finishing | 86 | $98.00 | $140.47 |
| 17 Aug 2026, 11:00 am | Pete Rasmussen | Edging | Cut & machined | 66 | $88.00 | $96.80 |
| Total | 459 | $749.53 | ||||
What this actually costs to make
Materials plus the bench time, per unit
$324.81
each, over 5 in this batch
- Materials
- $874.53
- Booked labour
- $749.53
- Batch cost
- $1,624.06
List price each $296.00
Margin each -$28.81 · -10%
The materials half comes off the bill on its own. The labour half only exists because the time is booked against the job as it moves — without it, the cost of a piece is the plywood and nothing else.
Where the time went
| CNC Router | 2 h 2 min | $233.83 |
| Assembly | 2 h 8 min | $200.53 |
| Finishing | 1 h 26 min | $140.47 |
| Edging | 1 h 6 min | $96.80 |
| Sanding | 57 min | $77.90 |
Job details
- Making
- 51470-11 Birch
- Batch
- B-260173
- Raised
- 27 Jul 2026
- Due
- 08 Sep 2026
- Completed
- 17 Aug 2026
- Planned time
- 7 h 30 min
- Booked time
- 7 h 39 min + 2%
- Owner
- Dave Kuiper
Book bench time
Costed at the rate of the bench that did the work.