Item · Materials

Glass

Basic glass melted from Sand: 3 Sand and 10 Fuel give 3 Glass at Furnace I or II (4 with the Glassworker talent), or the Factory Smithy makes 1 from 3 Sand and 1 Coal. It becomes Empty Bottles and Alchemy Flasks and goes into lanterns, laboratories and other buildings.

Verified Updated 5 October 2026

Resale: no buyer
Stack size: 30
Study Table: 2010 (3 Science)

How to get it

Station	Ingredients	Makes	Time (ticks)	Mastery	Technology
Furnace I	3× Sand, 10× Fuel	3 (4 with Glassworker)	6	Smithing 2	Glass
Smithy I	3× Sand, 1× Coal	1	8	Smithing 2	Smithy I

Plan this craft: every raw material

What it is used for

Makes	Needs	Station
Alchemy Flasks I	2	Furnace I
Empty Bottle	1	Furnace I
Golden Talisman	2	Jewelry Table
Silver Talisman	1	Jewelry Table
Starter Alchemist's Kit	3	Jewelry Table

Lantern I ×2
Lantern II ×8
Jewelry Table ×3
Bioreactor ×10
Factory Lantern ×2
Improve the Church III ×8
Laboratory I ×3
Laboratory II ×8
Resurrection Table I ×4
Embalming Table I ×4
Embalming Table II ×6
Dresser with mirror ×2

Tips

The furnaces finish a batch on their own once started, but you must collect it before the next one begins.
The Factory Smithy is worked by zombies only.