# It was cast as a flat preform and hot-forged in about ten cycles of heating and hammering, then annealed.

> Most likely: It was cast as a flat preform and hot-forged in about ten cycles of heating and hammering, then annealed.

Source: https://mysteriesdept.com/mysteries/nebra-sky-disc/answers/ANS0D2SBEFA6ZFK/it-was-cast-as-a-flat-preform-and-hot-forged-in-about-ten  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Questions](https://mysteriesdept.com/questions)[Nebra Sky Disc](https://mysteriesdept.com/mysteries/nebra-sky-disc)[How was the disc made?](https://mysteriesdept.com/mysteries/nebra-sky-disc/questions/QST0D2SB8KT2F7H/how-was-the-disc-made)Answer

Answer · Nebra Sky Disc

# It was cast as a flat preform and hot-forged in about ten cycles of heating and hammering, then annealed.

It was cast as a flat preform and hot-forged in about ten cycles of heating and hammering, then annealed.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests supported it: one piece of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- Recrystallised grains with annealing twins and elongated inclusions; a replica of the same alloy can be made this way.

## What would rule it out

- Dendritic cast structure in the disc's interior.

## Evidence 1 for · none against

[Medium grains with annealing twins, elongated sulphide inclusions and random grain orientation; a replica of…](https://mysteriesdept.com/mysteries/nebra-sky-disc/evidence/EVD0D2SBEQ41AQ5/medium-grains-with-annealing-twins-elongated-sulphide)

Established

FOR

## The questions it answers

[How was the disc made?](https://mysteriesdept.com/mysteries/nebra-sky-disc/questions/QST0D2SB8KT2F7H/how-was-the-disc-made)

Part of [When was the disc made and buried?](https://mysteriesdept.com/mysteries/nebra-sky-disc/questions/QST0D2SB8463DKB/when-was-the-disc-made-and-buried)

AnsweredNo answer ahead

## Cite it

```
Mysteries Department. (2026). It was cast as a flat preform and hot-forged in about ten cycles of heating and hammering, then annealed. [Answer ANS0D2SBEFA6ZFK]. https://mysteriesdept.com/r/ANS0D2SBEFA6ZFK
```

Key

**ANS** 0D2SBEFA6ZFK

Kind

Answer · hypothesis

Origin

Published

Version

1

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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[JSON](https://mysteriesdept.com/api/v1/records/ANS0D2SBEFA6ZFK)