How To Print A Smelting Furnace In Astroneer

Alright, space explorers! Ever felt that yearning, that burning desire (pun intended!) to upgrade your Astroneer base from a humble dirt-slinging operation to a full-blown, metal-melting powerhouse? Then you, my friend, need a Smelting Furnace. And the best part? You don’t even need to order one from Amazon Prime delivered via rocket drone. You can print it yourself!
But how, you ask? Fear not! This isn't rocket science (though, let's be honest, Astroneer is kind of rocket science-y). We’re going to break down exactly how to 3D print yourself a personal, portable forge of fiery goodness. Think of it like upgrading from a microwave to a proper oven. Suddenly, a whole new world of possibilities opens up. Ready to fire it up?
Why Bother with a Smelting Furnace Anyway?
Okay, before we dive into the how, let's address the why. Why go through the trouble of crafting this contraption? Well, it's simple: progress! Remember how you started out turning raw resources into… slightly less raw resources with the Backpack Printer? The Smelting Furnace is the next level. It’s your ticket to advanced materials. It's like graduating from crayons to oil paints – a whole new spectrum of creativity awaits!
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With the Smelting Furnace, you can take those raw ores you've been diligently mining and transform them into refined metals like:
- Copper: Essential for electronics and base building. It's like the duct tape of Astroneer.
- Aluminum: Lightweight and strong, perfect for vehicles and modules. Think of it as the carbon fiber of the cosmos.
- Iron: The backbone of many structures and tools. It's the steel of the solar system, if you will.
- And more! Seriously, the furnace unlocks a ton of recipes, paving the way for advanced tech.
These refined materials are crucial for crafting advanced modules, vehicles, and expanding your base. Without a Smelting Furnace, you're basically stuck in the stone age of space exploration. And nobody wants that, right?
The Blueprint Beckons: What You Need to Print a Smelting Furnace
So, you're convinced! You want a Smelting Furnace. Excellent choice! Now, let's gather the necessary ingredients for our cosmic baking show. What materials do we need? Well, to unlock the blueprint you just need to unlock the research of Medium Manufacturing in the research catalog. Medium Manufacturing unlocks the recipe, and it's relatively early in the game's progression, so it shouldn't take long to get.

With the recipe unlocked, you’ll need:
- 2x Ceramic: The sturdy foundation of our furnace. We'll talk about how to make this in a sec.
- 2x Copper: The electrical heart of the operation. Hopefully, you’ve been hoarding that copper!
Seems simple enough, right? But here's the catch: you can't just find Ceramic lying around. You need to make it first! Think of it like making flour before you can bake a cake. Essential, but an extra step.
Making Ceramic: From Dirt to Durable
To craft Ceramic, you'll need a Soil Centrifuge. You can 3D print this on your base printer using Compound. The Soil Centrifuge is like a washing machine for dirt – it spins it around and separates out the useful components. The one we're looking for is Clay.

Once you have Clay, pop it into a Smelting Furnace (wait... what?). I know, I know, it's a bit of a chicken-and-egg situation. You need a furnace to make the materials for the furnace. Here's the trick: you can actually craft Ceramic in the Backpack Printer! It's slow, it's inefficient, but it gets the job done. Think of it as proof-of-concept Ceramic. Just enough to get you started.
So, to recap:
- Gather Compound.
- Print a Soil Centrifuge using Compound.
- Use the Soil Centrifuge to refine Clay from Soil.
- Use the Backpack Printer to create Ceramic.
Copper Acquisition: Mining for Metallic Goodness
Now, for the Copper! This is a bit more straightforward. You'll need to find Malachite, the raw ore that transforms into Copper when smelted. Malachite is commonly found on the starting planet, Sylva, often in cave systems. It's a distinctive green color, so keep your eyes peeled! Think of it like finding emeralds, but less valuable in real life and way more useful in Astroneer.
Once you've mined some Malachite, you’ll need to do the same thing: smelt it into Copper, using the same Backpack Printer-created Smelting Furnace. Once you have two copper ingots, we're good to go.

Printing Your Personal Forge: The Moment of Truth
Alright, you've got your Ceramic and your Copper. It's time to assemble your Smelting Furnace! Head to your Printer (the larger one, on your base). Select the Smelting Furnace blueprint. Watch as your printer whirs and clicks, transforming raw materials into a glorious, metal-melting machine!
Congratulations! You are now the proud owner of a Smelting Furnace.
Firing It Up: Using Your New Furnace
Now that you have your furnace, how do you actually use it? It's pretty simple, but let's go over the basics:

- Power Up: The Smelting Furnace requires power to operate. Connect it to your base's power grid, either via direct connection or through a platform.
- Fuel the Fire: The furnace needs fuel to burn. Solid fuel like coal or organic material works best. Think of it like feeding a hungry beast.
- Load the Ore: Place the raw ore you want to smelt into the input slot of the furnace.
- Wait for the Magic: The furnace will hum and whir, slowly processing the ore. Keep an eye on the progress bar.
- Collect Your Rewards: Once the process is complete, the refined metal will appear in the output slot. Grab it and get crafting!
Experiment with different types of ores and fuels to optimize your smelting process. You'll quickly become a master metallurgist of the solar system!
Advanced Smelting: Tips and Tricks for the Discerning Astroneer
Want to take your smelting game to the next level? Here are a few pro tips:
- Automation is Key: As your base grows, consider automating your smelting process. Use auto arms to feed ores and fuel into the furnace, freeing you up to explore and conquer new worlds! It’s like having a robotic assistant who’s obsessed with metallurgy.
- Fuel Efficiency: Experiment with different fuels to find the most efficient option. Some fuels burn longer and hotter than others.
- Multi-Furnace Mayhem: Why settle for one furnace when you can have a whole array? Building multiple furnaces allows you to smelt different types of ores simultaneously, speeding up your production.
- Planetary Specialization: Different planets have different resources. Consider setting up smelting outposts on planets rich in specific ores. It's like building a factory empire across the stars!
The Final Forge: Your Journey Awaits
So there you have it! Everything you need to know to print and operate a Smelting Furnace in Astroneer. With a little bit of effort and ingenuity, you can transform your base into a thriving hub of metal production. The cosmos awaits, filled with new materials to discover and technologies to unlock. Now go forth, explore, and smelt your way to glory!
Happy Astroneering!
