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Furnaces

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Bullet Furnace

Operation

Can load upto 5 charcoal, each charcoal provides 1 minute of additional Max FireTime.

It is possible to load less and start the reaction and then top it up, to a maximum of 5 over time.

it is a automatic process if you load max 5cc. just let it time out and collect.

Current "fire and forget" recipe is 50 ore, 5cc yields 1 metal.

Compression Furnace

Operation

  • Holds up to 500 ore
  • Holds up to 20cc
  • Burns 1cc per minute for a maximum of 20 minutes

Metal Yields

The base formula is MetalYield = Round(OreAmount*3/100) - that is for every 33.3 ore you put into the furnace you get 1 metal out. However due to the way the game rounds off this formula it is possible to get a significantly better yield by hitting the right "breakpoints".

For example, a good recipe to use is 484 ore and 20 charcoal. That batch will smelt for 20 minutes and produce 15 metal. The table below shows the recipes that give the most beneficial round-off gains.

Ore Used CC Used Metal Yield Ore Cost/Metal CC/Metal CC/Ore Metal Yield/Hour Metal Yield/1000 Ore CC Cost/1000 ore Net Gain
17 20 1 17,0 20 1,176 3,0 58,8 1176,5 96,1%
50 20 2 25,0 10 0,400 6,0 40,0 400,0 33,3%
84 20 3 28,0 6.66 0,238 9,0 35,7 238,1 19,0%
117 20 4 29,3 5 0,171 12,0 34,2 170,9 14,0%
150 20 5 30,0 4 0,133 15,0 33,3 133,3 11,1%
184 20 6 30,7 3.333 0,109 18,0 32,6 108,7 8,7%
217 20 7 31,0 2.86 0,092 21,0 32,3 92,2 7,5%
250 20 8 31,3 2.5 0,080 24,0 32,0 80,0 6,7%
284 20 9 31,6 2.22 0,070 27,0 31,7 70,4 5,6%
317 20 10 31,7 2 0,063 30,0 31,5 63,1 5,2%
350 20 11 31,8 1.82 0,057 33,0 31,4 57,1 4,8%
384 20 12 32,0 1.67 0,052 36,0 31,3 52,1 4,2%
417 20 13 32,1 1.54 0,048 39,0 31,2 48,0 3,9%
450 20 14 32,1 1.43 0,044 42,0 31,1 44,4 3,7%
484 20 15 32,3 1.33 0,041 45,0 31,0 41,3 3,3%
500 19 15 33,3 1.27 0,038 47,4 30,0 38,0 0,0%

(The line in bold is the recommended recipe for common use)

Description of the columns of the table:

Column Description
Ore Used How much ore you put into the furnace
CC Used How much charcoal you put into the furnace
Metal Yield How much metal you get out of the run
Ore Use/Metal How much ore it cost to make 1 metal
CC Cost/Metal How much charcoal it cost to make 1 metal
Metal Yield/Hour How much metal you produce in an hour
Metal Yield/1000 Ore How much metal you get out of 1000 ore
CC Cost/1000 Ore How much charcoal it costs to smelt 1000 ore
Net Gain: How much metal you've gained compared to the baseline formula (MetalYield = OreAmount*3/100)

It is recommended to simply use the 484 ore + 20 cc => 15 metal recipe unless you really want to squeeze some extra mileage out of your ore at a significant increase in charcoal costs. If you want to save significantly on your ore you will have to go to the extreme recipes such as 50 ore + 20 cc => 2 metal or even 17 ore + 20 cc => 1 metal. However by using the 17 ore recipe it's possible to almost double the metal yield of the base formula by paying more than 25 times the charcoal cost.

  • Many people use the 250 Ore + 20 cc = 8 Metal as a compromise between ore, charcoal and time efficiency.

Blast Furnace


Recipes

If you want to save ore, use 9 ore:10 CC, stop at 9:15 to get 1 metal 8 clinker and 1 CC back. The higher end breakpoint is unknown right now. Please feel free to correct me and make it known!

FaF = Fire and Forget
Ore Used CC Used Metal Yield Time opened Ore Cost/Metal CC/Metal CC/Ore Metal Yield/1000 Ore CC Cost/1000 ore Net Gain
10 9 1 FaF 10.00 9.0 0.9 100.0 900.0
28 9 2 FaF 14.00 4.5000 0.3214 71.43 321.43
491 10 29 9:55 16.93 0.3448 0.0204 59.06 20.37
500 9 27 FaF 18.52 0.3333 0.0180 54.00 18.00
968 10 58 9:55 16.69 0.1724 0.0103 59.92 10.33
990 10 59 9:56 16.78 0.1695 0.0101 59.60 10.10
1000 9 54 FaF 18.52 0.1667 0.0090 54.00 9.00
1000 10 60 9:55 16.67 0.1667 0.0100 60.00 10.00
1000 10 30 FaF 33.33 0.3333 0.0100 30.00 10.00

Conjecture (Ikuu): Exactly 50/3 ore cooked for just under 10 minutes yields just under 1 bar, without rounding. The same rate of conversion means that, for 9 minutes of cooking, you need 500/27 ore to get precisely 1 bar, again without rounding. That implies the following FaF recipes:

Ore Used CC Used Metal Yield Time opened Ore Cost/Metal CC/Metal CC/Ore Metal Yield/1000 Ore CC Cost/1000 ore Net Gain
10 9 1 FaF 10 9
28 9 2 FaF 14 4.5
46 9 3 FaF 15.33 3
65 9 4 FaF 16.25 2.25
84 9 5 FaF 16.8 1.8
102 9 6 FaF 17 1.5
121 9 7 FaF 17.29 1.29
139 9 8 FaF 17.38 1.125
158 9 9 FaF 17.55 1
491 9 27 FaF 18.18 .33
991 9 54 FaF 18.35 .17

Hades Furnace

Ore Used Petrol Used Metal Yield Time opened Ore Cost/Metal
20000 03 240 1,5 hours Unknown
20000 04 300 2 hours Unknown
20000 05 380 2,5 hours Unknown
20000 06 440 3 hours Unknown
20000 07 500 3,5 hours Unknown
20000 08 580 4 hours Unknown
20000 49 2000 24 hours 10.00
20000 98 2660 48 hours 7.52
20000 147 3000 72 hours 6.67

Persephone Furnace

Ore Used Petrol Used Metal Yield Time opened Ore Cost/Metal
20000 28 1340 24 hours 14.93
20000 56 2000 48 hours 10.00
20000 84 2400 72 hours 8.33