Personal laser defense — Factorio Production Calculator
Personal laser defense is crafted in the assembling machine in 10 seconds, producing 1 per craft from 20 × Processing unit, 5 × Low density structure, 5 × Laser turret. At 60 per minute you need 20 assembling machines, and the chain behind it draws on 5 raw resources: water, petroleum gas, iron ore, copper ore, coal.
Production chain for 60 Personal laser defense / minute
| Item | Per minute | Machines | Machine |
|---|---|---|---|
| Copper cable | 114,000 | 950 | Assembling machine |
| Sulfuric acid | 78,000 | 26 | Chemical plant |
| Iron plate | 72,960 | 3,891.2 | Furnace |
| Copper plate | 66,600 | 3,552 | Furnace |
| Electronic circuit | 34,800 | 580 | Assembling machine |
| Sulfur | 7,800 | 65 | Chemical plant |
| Steel plate | 6,600 | 1,760 | Furnace |
| Plastic bar | 6,300 | 52.5 | Chemical plant |
| Battery | 3,600 | 240 | Chemical plant |
| Advanced circuit | 2,400 | 480 | Assembling machine |
| Processing unit | 1,200 | 400 | Assembling machine |
| Low density structure | 300 | 150 | Assembling machine |
| Laser turret | 300 | 200 | Assembling machine |
| Personal laser defense | 60 | 20 | Assembling machine |
Raw materials
| Resource | Per minute |
|---|---|
| Water | 273,000 |
| Petroleum gas | 180,000 |
| Iron ore | 72,960 |
| Copper ore | 66,600 |
| Coal | 3,150 |
Machine counts are not rounded up. Add a little headroom in game — belt throughput and inserter speed usually mean you want 5-10% more than the exact number.
Personal laser defense recipe
| Machine | Crafting time | Output | Ingredients |
|---|---|---|---|
| Assembling machine | 10 s | 1 | Processing unit × 20, Low density structure × 5, Laser turret × 5 |
What the whole chain needs
60 personal laser defenses per minute pulls in 13 intermediate products, and the whole tree comes to 12,367 machines across 3 machine types, fed by 5 raw resources. The table above already sums demand across every branch — if copper cable is used by two recipes, you see the total, not one of them.
Belt check: the busiest input here moves 273,000 per minute, which is 303.33 of a yellow belt's 900 per minute. Above 1.0 and you need a second belt (or a faster tier) before the machines themselves become the limit.
What uses personal laser defense
No base-game recipe consumes personal laser defense — it is an end product. Once you build it, the chain stops here, which makes it a good target if you only want to size the sub-factory that feeds your mall.
What personal laser defense is made from
- Processing unit — 20 per craft
- Low density structure — 5 per craft
- Laser turret — 5 per craft
FAQ
How many assembling machines do I need for 60 personal laser defenses per minute?
20 assembling machines. One at standard speed produces 3 per minute, so 60 ÷ that number is the count. The calculator above rounds nothing — add 5-10% headroom for belt and inserter losses in a real factory.
How much raw ore does personal laser defense take?
At 60/min the chain consumes 273,000 water per minute, 180,000 petroleum gas per minute, 72,960 iron ore per minute and 2 more. Those numbers are the theoretical minimum — mining productivity research and productivity modules both reduce them.
Machine counts assume bare machines at standard speed. Recipe data comes from the game's own prototypes (PlayerCalc, Factorio 2.0 base game). Not affiliated with Wube Software.