🔥 Kayser's Smelting Furnaces

Author
Downloads
2038
Votes Score
77%
Votes
16
Favorited
42
Updated
08/29/25
Created
01/02/25

Description

🔥 Kayser's Smelting Furnaces

📦 The Compactest Smelting Furnaces

Current as of: v0.7.4 (U3)

📖 Summary

Ultra-Compact, cheap, and tilable furnaces. Ideal all the way from early game start-up, into late game mass production, extending and upgrading gracefully all the way from T1 to T4.

The U3 update features a row of improvments, including an improved tiling concept, more useful storage arrays, and updates to minimize cost and add flexibility in terms of output direction.

⚙️ General Features
  • Furnaces for: Iron, Copper, Steel, Glass, and Silicon. (Aluminium and Titanium might be added later)
  • Blast Furnaces (T1/T2) and Arc Furnace II (T4) versions. T3 where feasible (Silicon).
  • Upgrades from Blast Furnace I to Blast Furnace II without any demolishing.
  • Upgrades from Blast Furnace II to Arc Furnace II with minimal demolish (input manifold).
  • Interconnected exhausts (and low steam) for easy connection to exhaust filtration and steam recovery.
  • U3 UPDATE: More useful storage arrays for easy mapping of transports, early trucking to get started, and/or alerts for monitoring. Also, new tiling concept where the BP is extended by tiling onto itself (with some overlap). No more useless belts or pipes hanging out!
⚡Quick Start Guide
  • Plug & Play ready, just deploy and go up to rated capacity. In some cases, belts and pipes may require an upgrade to reach full capacity. (Low tier belts and pipes are used to keep construction cost low.)
  • To extend further, paste blueprint overlapping itself (two furnaces of the BP sticking out, furnaces aligned and tight against each other). Upgrade old belts and pipes as required to meet new capacity.
  • Note: Ore crushers, hydrogen production, and graphite production are not included in the blueprints.
⚒️ Iron, Copper, Steel
  • To upgrade from Blast Furnace I to Blast Furance II, place the T2 blueprint. Start feeding the secondary ingredient (limestone/sand) and replace regular ore feed with crushed ore. Wait until all the regular ore is fully consumed before upgrading the actual furnace building.
  • To upgrade from Blast Furnace II to Arc Furnace II, demolish the coal belt, coal storage, and the jiggly limestone/sand belts to the furnace inputs. Then align and place the T4 blueprint on top of the existing furnace. New input manifold should be constructed, including water and graphite, and the low steam output should fit on the back.
  • U3 UPDATE: Steel now includes Oxygen production.
🪟 Glass
  • Complete redesign for U3, considering new ratios.
  • T1 BP includes broken glass recycling and markers to show future upgrade space requirements.
  • Glass mass production BP included, as well as a T2 version with integrated Glass Mass production.
🔄 Alternative Input/Output Directions
  • By default, inputs run in one direction and outputs in the opposite direction. Its always possible to flip belts to reverse the direction. In addition, some orher alternatives exist.
  • Inputs can generally be fed at any point along the manifold (sending ingredients left and right).
  • Iron: Can alternatively be output between the casters. An alternative output belt mini blueprint is included for this purpose.
  • Copper: Can alternatively be forked and output forward at any point where the copper belt crosses the impure copper belt. If you want to combine several outputs, just flip some belts; no blueprint included.
  • Steel: Can alternatively be output forward at any point of output from the casters, between the Air separators. If you want to combine several outputs, just flip some belts; no blueprint included.
  • Glass: Can alternatively be output forward between any pair of Glass makers.
  • Silicon (poly): Can obvioulsy be output forward at any point.
🧩 Other
  • BPs generally include smokestacks for Exhaust. As Exhaust Filtration becomes available, it is recommended to replace the smoke stacks for Exhaust with Exhaust scrubber.
  • Similarly, T4 blueprints include smoke stacks for Low steam. This is mainly for quick start and testing purposes, and it is recommended to make use of the Low steam for thermal desalination, or, if seawater is not available, a cooling tower to recover some of the water.

Enjoy your smelting!

Earlier Versions (4)

Version Copy to Clipboard Release Date Downloads
4 (Current) 06/08/2025 1231
3 06/06/2025 39
2 01/02/2025 755
1 01/02/2025 13

Comments (7)

BROOOOO you can make blueprints now that allow the BP to auto place a lower tier of module if the upper tier isn't researched? CoI devs are being a li'l SPICY. Also, well done to you as well. TIGHT plan.
I may be wrong, but I think a single molten channel doesn't have enough throughput for 8x silicon reactor so ARC II silicon BP won't be able to run at 100% speed ? but maybe u can fix it by using molten balancer like I did here btw https://hub.coigame.com/Blueprint/Detail/672
@NEET ENGINEER Thank you for this wonderful comment. Issue fixed.
YuS
There is only one logistics problem with smaller storages — vehicles don’t handle them well in the new update.
@YuS, can you elaborate?
YuS
@Kayser When high-volume resource demand comes from production, small storages cannot meet the demand. I managed to solve this by connecting a large storage to the small one via a conveyor. Obviously, delivery distance also matters.
Storages included are intended to get you started with truck deliveries, but then connected to transports ASAP and then only used as small buffers and allow you to set alerts to monitor for issues.