Furnaces

Bullet Furnace

• 1 Crucible
• 50 Firebricks

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

• 100 Clay
• 3 Crucible
• 200 Firebricks
• 5 Iron Bars

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

• 100 Boards
• 20 Clay
• 100 Concrete
• 6 Crucibles
• 10 Glass Pipe
• 50 Leather
• 5 Pulley
• 100 Steel Sheeting

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%
500	19	15	33,3	1.27	0,038	47,4	30,0	38,0	0,0%