# Glass core

Pyanodons item · internal name `glass-core` · stack size 100 · first craftable in tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md))
HTML page: https://factorio.kalzumeus.com/item/glass-core/

## Produced by (3 recipes)

### Glass core (`glass-core`)

- 3.5 s · tier 4
- Ingredients: 3 × [Silver plate](https://factorio.kalzumeus.com/item/silver-plate.md), 4 × [Sulfur](https://factorio.kalzumeus.com/item/sulfur.md), 100 × [Molten glass](https://factorio.kalzumeus.com/fluid/molten-glass.md)
- Results: 1 × [Glass core](https://factorio.kalzumeus.com/item/glass-core.md)
- Made in: Glassworks MK 01, Glassworks MK 02, Glassworks MK 03, Glassworks MK 04
- Unlocked by: [Fine electronics](https://factorio.kalzumeus.com/tech/fine-electronics.md)

### Glass core (`hotair-glass-core`)

- 3.5 s · tier 4
- Ingredients: 3 × [Silver plate](https://factorio.kalzumeus.com/item/silver-plate.md), 4 × [Sulfur](https://factorio.kalzumeus.com/item/sulfur.md), 100 × [Molten glass](https://factorio.kalzumeus.com/fluid/molten-glass.md), 50 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md)
- Results: 2 × [Glass core](https://factorio.kalzumeus.com/item/glass-core.md)
- Made in: Glassworks MK 01, Glassworks MK 02, Glassworks MK 03, Glassworks MK 04
- Unlocked by: [Fine electronics](https://factorio.kalzumeus.com/tech/fine-electronics.md)

### Glass core (`simik-quartz`)

- 80 s · tier ?
- Ingredients: 4 × [Geothermal Water barrel](https://factorio.kalzumeus.com/item/geothermal-water-barrel.md), 50 × [Quartz ore](https://factorio.kalzumeus.com/item/ore-quartz.md), 1 × [Biosample](https://factorio.kalzumeus.com/item/bio-sample.md), 30 × [Pressurized air](https://factorio.kalzumeus.com/fluid/pressured-air.md)
- Results: 8 × [Glass core](https://factorio.kalzumeus.com/item/glass-core.md), 2 × [Quartz pulp (stage 2) barrel](https://factorio.kalzumeus.com/item/quartz-pulp-02-barrel.md), 1 × [Quartz pulp (stage 1) barrel](https://factorio.kalzumeus.com/item/quartz-pulp-01-barrel.md), 1 × [Hot air barrel](https://factorio.kalzumeus.com/item/hot-air-barrel.md)
- Made in: Simik den MK 01, Simik den MK 02, Simik den MK 03, Simik den MK 04
- Unlocked by an upgrade choice (script), not research

## Used in (1 recipes)

- Cladded core (`cladded-core`, tier 4) → [Cladded core](https://factorio.kalzumeus.com/item/cladded-core.md)