| Priority | Task | Key Building | Key Item |
|---|---|---|---|
| 1 | Land and build solar | 
Solar panel
Solar panel | 
Steel plate
Steel |
| 2 | Mine tungsten | 
Big mining
Big drill | Tungsten carbide |
| 3 | Build foundry | 
Foundry
Foundry | 
Calcite
Calcite |
| 4 | Lava pumping | 
Offshore
Pump | Molten iron/copper |
| Resource | Recipe | Input | Output | Foundry Bonus |
|---|---|---|---|---|
| Molten iron | Smelting | Lava + Calcite | 500 fluid | +50% prod |
| Molten copper | Smelting | Lava + Calcite | 500 fluid | +50% prod |
| Iron gears | Casting | 100 molten iron | 20 gears | Direct craft |
| Copper wire | Casting | 100 molten copper | 40 wire | Direct craft |
What to Pack Before You Go
Vulcanus has no trees, no water (except lava and sulfuric acid), and aggressive demolishers roaming the plains. Pack everything you need for the first 2-3 hours:
| Item | Quantity | Why |
|---|---|---|
| Solar panels | 30+ | No sunlight obstruction, but no coal or steam power |
| Accumulators | 20 | For night power on solar |
| Gun turrets | 20+ | Defense against small demolishers |
| Piercing ammo | 800+ | Feed turrets during demolisher fights |
| Assembler 2/3 | 10 | Build base infrastructure |
| Iron plates | 500 | Bootstrap foundry and initial belts |
| Copper plates | 200 | Circuits and ammo |
| Steel plates | 200 | Turrets, furnaces, and structures |
| Pipes + Pumps | 50+ | Lava pumping infrastructure |
| Substations | 10 | Power distribution across lava lakes |
| Repair packs | 20 | Demolisher attacks can damage turrets |
First Steps on Vulcanus
Step 1: Find a lava lake. Lava is the most important resource on Vulcanus. Without it, you cannot run the foundry. Drop near a lava lake with accessible shoreline.
Step 2: Build solar and turret perimeter. Vulcanus has no night-time power issues (constant sunlight is available), but build accumulators for buffer. Place turrets in a semicircle around your base facing outward. Demolishers wander and will path through your base if they detect pollution or structures.
Step 3: Start lava pumping. Pump lava from the lake through pipes into a foundry. The foundry turns lava into molten iron or molten copper at a 5:1 ratio. This replaces your entire ore mining operation on Vulcanus.
Step 4: Research the foundry tech. Unlock foundry technology as your first research. The foundry gives you:
- Molten metal casting (iron, copper, steel) with built-in productivity
- Direct LDS crafting from molten copper + plastic (no copper plate step)
- 50% more plates per ore when you bring foundries back to Nauvis
Step 5: Big drill research. The big drill mines with +50% resource drain bonus. Once unlocked, place it on any ore patch on Vulcanus (tungsten, stone, coal).
Killing Your First Demolisher
Small demolishers guard resource patches and block expansion. They are killable with turret spam:
| Biter Type | HP | Turrets Needed | Ammo Needed |
|---|---|---|---|
| Small demolisher | ~2500 | 15-20 gun turrets | ~400 piercing rounds |
| Medium demolisher | ~7500 | 30-40 turrets | ~1000 piercing rounds |
| Big demolisher | ~25000 | 80+ turrets + upgrades | Avoid until later |
Strategy: Place turrets in a semicircle near the demolisher's patrol path. Load them with piercing ammo. Lead the demolisher into the kill zone with your character. Let turrets do the work -- do not try to fight it directly at close range.
A flame turret behind the gun turrets adds significant damage-over-time. If you unlocked flamethrower turrets, bring one.
Unlock Priority on Vulcanus
| Priority | Technology | Unlocks | Impact |
|---|---|---|---|
| 1 | Foundry | Lava smelting, molten metal casting | Replaces all Nauvis smelting |
| 2 | Big Mining Drill | 50% resource drain bonus | Extends patch life by 50% |
| 3 | Cliff Explosives | Destroy cliffs | Opens buildable space |
| 4 | Tungsten Processing | Tungsten carbide, steel alloy | Advanced buildings |
| 5 | Metallurgic Science | New science pack | Enables return tech tree |
Once you have these unlocked, ship the foundry and big drill blueprints back to Nauvis via your space platform. The foundry alone doubles your steel production on Nauvis because it casts steel directly from molten iron without the intermediate iron plate step.
Scaling Your Vulcanus Operation
| Stage | Objective | Build Size | Time Estimate |
|---|---|---|---|
| Landing | Get foundry running | 10 machines | 30 min |
| Expansion | Set up tungsten processing | 20 machines | 1 hour |
| Science | Start metallurgic science | 15 assemblers | 1.5 hours |
| Return | Ship tech back to Nauvis | Cargo landing | Variable |
Vulcanus is the most productive planet visit you can make. The foundry and big drill provide permanent upgrades to your Nauvis factory that never become obsolete. Even if you leave Vulcanus after unlocking everything, the tech you bring back is the foundation for endgame scaling.
Before leaving, set up enough defense on Vulcanus to keep your mining outpost running. A single line of gun turrets with a belt of piercing ammo can hold small demolishers indefinitely.
Common Mistakes
- Foundry before drills: Do not spend time setting up tungsten drills before the foundry. Foundry gives you iron and copper from lava -- which is infinite. Ore drills become secondary on Vulcanus.
- Too much walking: Vulcanus terrain has cliffs everywhere. Do not build a sprawling base. Keep everything compact near your lava lake until you have cliff explosives.
- Underestimating demolishers: A group of small demolishers can destroy an unguarded base in seconds. Always maintain turret coverage. A gap in your perimeter is an invitation.
Bottom Line
Vulcanus is the easiest and most rewarding planet to visit first in Space Age. The foundry alone is worth the trip -- it permanently upgrades your factory's production capacity. Land with enough materials for a solar-powered turret perimeter, find a lava lake, and rush the foundry tech. Everything else can wait.
Next planet to consider: Once Vulcanus science is flowing and you have foundries on Nauvis, head to Fulgora for quality modules and electromagnetic science.
Community Verification
- Factorio Wiki: Vulcanus -- Planet surface conditions and resources
- Factorio Wiki: Foundry -- Foundry recipes and fluid casting ratios
- Factorio Wiki: Big mining drill -- Resource drain mechanics