36 ratings
Super Simple Steel Smelting
By Hardly
Absolutely minimal steel refining process.
It's this simple
Resouces needed to make the furnace.
  • 30g iron
  • 10g copper
To make the steel
  • 1 chunk of coal
  • 3 chunks of unrefined iron
  • 1 chunk of Ice (Oxite)
  • 2 chunks of Ice (Volatiles)
(note: 1 chunk means just 1 piece, not a whole stack. Doesn't matter for the raw materials provided you keep the ratio the same, but matters a lot with the ices!

1. Make a furnace at your autolathe ("Kit (Furnace)", 30g iron, 10g copper)

2. Place the furnace. Make sure you can access the top, and that there's enough room at the output chute (underneath it) for things to fall out (and check they won't roll away).

3. If necessary, split your stacks of unrefined iron and coal into the correct proportions, and put them in your uniform pockets (4) or suit (3).

4. Leave the Ices in your mining belt, but have it equiped.

5. Wait until nighttime (so the ices don't evapourate while you're working with them). In space, I guess you might need to find a shadowed spot?

6. Split off one piece of Oxite ice, and two pieces of volatiles ice. Probably stand somewhere flat so they don't roll away.

7. Put the big stacks back in your mining belt, and grab the ice chunks you dropped, one type in each hand.

8. Into the input hatch of your furnace, put 1 chunk of Ice (oxite), 2 chunks of Ice (Volatile), 1 chunk of coal, and 3 chunks of unrefined iron.

9. Press the big red button.

10. Hover over the glowing window to see the funace contents, once it's burning well you should see "will produce a 4g ingot of steel"

11. Pull the "Open Mold" lever.

12. Hey presto you have steel!

You can of course use larger quantities, this was just the simplest version of the process. The ratio of the iron and coal is very important, but altering the gas ratios might let you get hotter or cooler flames in the furnace - check the ereader cartridge on your tablet for details about the pressure/temperature zone and reagent ratios to succesfully create the various alloys.

Update: some people have reported processing several hundred g of steel in one batch, using only 1 oxite chunk and 2 chunks of ice volatiles. So yeah, a little goes a really really long way.
When increasing the quantities of raw materials to get more steel, do not increase the ice by the same amount. In fact you may not need to add more gas at all, provided it keeps the furnace hot enough for your raw materials to be processed. Adding to much gas can lead to large explosions and/or distressingly bright glows from the furnace - and it will be too hot/pressurised to make steel.
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The Pickaxe Gamer Dec 22, 2018 @ 7:09am 
I don't understand. I can't smelt copper for in my arc furnace, so how do I do this?
Taurec Feb 1, 2018 @ 2:37am 
" Adding to much gas can lead to large explosions and/or distressingly bright glows from the furnace"
Had read this before... Now my death corpse fly in a Orbit from the moon... :D
hugin Jan 25, 2018 @ 3:30am 
I made a lot of Steel in the start. But, did the mistake to add more gas trough adding the ratio 1:2 of Oxite:Volatile times 10:20 when adding 50:150 Coal:Iron...
(I thought you had to add more fuel as you added more resources to the furnace. But duh, if you actually monitor the temp/ pressure you will see that this is not the case.)

But, off course, this only produce reagent mixed chunks...

So, what can I do to get temp down?
As I expect that to be my issue now.
Could I just add water (Oxites) to get temp down? (I don't remember the temp, but the pressure is dropping)

Or should I go the easy way, and deconstruct the furnace and rebuild?

Furnace is just connected to power, not piped and is outside.

Moon, Survival mode.

I'm been focused on getting the Power up and going automatically using Hardly's setup (Thanks Hardly), so next now is getting steel for the main base build.

Thank you!

Glob46 Dec 24, 2017 @ 5:34am 
Спасибо, это действительно полезное руководство для новичков)) :Khappy:
Hardly  [author] Dec 18, 2017 @ 4:34pm 
Yes, I managed to get solder by doing this, and then just waiting for it to cool down a bit and fall into the right pressure/temperature range.

If you mean the reagent ratios - load up the ereader cartridge in your tablet, it has a list of all the alloys and the precise ratios and temperature/pressure conditions required to make them.

I haven't done extensive testing of different gas ratios yet. If you want really fine control over your furnace, it might be worth starting to plan a network of pipes and etc and doing some gas processing, rather than just feeding it ice.
Darkchaos Dec 18, 2017 @ 3:42pm 
Is it possible to get solder via this method? If so, what's the ratio?
Hardly  [author] Dec 17, 2017 @ 3:19pm 
The tubes are for gas - in the long run, you don't want to be hand-feeding ice to the furnace, so those pipes allow you to automate the operation with a network of pipes and valves and so forth.

As for which way is up, I usually place mine with the output chute pointing down, but I don't think it matters too much.

I usually set my furnace up outside, so I don't need to deal with all the waste heat and nasty gasses entering my breathing atmosphere, but you can set it up inside as long as you consider those issues.
Devil Dog Dec 17, 2017 @ 2:40pm 
Looking at the furnance, I'm not sure about placement - inside a base or outside, and which way is up?

And what are the two large tubes on one side for?

And thx for this guide!
-_LP_- Dec 16, 2017 @ 10:39pm 
You can add (if you want) that to make electrum in the same way you just need 1-1 ratio of Oxite to Volatiles. Put 2 of each and smelted 100g+ of electrum with the same "caveman" method.
Hardly  [author] Dec 16, 2017 @ 2:52pm 
Especially if you use a back pressure regulator (I think, I always get confused between the two types), then you can set it to the exact pressure you want.