<p>This is non-hardening plasteline, also known as <a href="https://en.m.wikipedia.org/wiki/Plasticine" rel="nofollow noreferrer">plastecine</a>. </p>

<p>For the record, although it is labeled as children’s modeling clay, I do not trust it to be non-toxic. Having worked with exactly this product in the past, I did find it to be great when building seals in damming walls of casting molds. If you want it to be harder, you can cool it / freeze it. This will not harden it, as you are only performing a state change in the oils / paraffins that are used to keep the mass malleable. I would be very cautious of overheating it, as you are likely to generate toxic fumes.</p>

CC BY-SA 3.0
2018-03-17T22:58:27.313Z
Thank you, this explains a lot. I tried just about every trick I could come up with to get it to cure.
Theik
CC BY-SA 3.0
2018-03-21T14:58:36.307Z
@Theik - I updated my answer with a bit more information on the product.
Nothingismagick
CC BY-SA 3.0
2018-03-17T19:42:31.787Z
2018-03-21T14:58:03.047Z
2018-03-21T14:58:03.047Z
Nothingismagick
<p>One of my friends found a bunch of clay in their basement, still sealed, but outside of the original package. However, I am unable to figure out what kind of clay it is. I've checked the EberhardFaber site, but they no longer seem to sell this specific type, or I simply can't recognize it because it's outside of the original package.</p>

<p>Things I've tried:</p>

<ul>
<li>Airdry it, it's sat for a day without looking like it'll harden in
the slightest.</li>
<li>Bake it for a few minutes on a high temperature, the clay goes runny and melty.</li>
<li>Bake it for 15 minutes on a lower temperature, the clay also goes slightly goopy. Does not harden after cooling down again.</li>
</ul>

<p><a href="https://i.sstatic.net/Cxd5e.jpg" rel="noreferrer"><img src="https://i.sstatic.net/Cxd5e.jpg" alt="Image of the clay"></a></p>

CC BY-SA 3.0
2018-03-17T10:47:06.070Z
Have you noticed the number 8401 on the label?
Willeke
CC BY-SA 3.0
2018-03-17T10:53:03.677Z
I have, but "Eberhard Faber 8401" gets me no useful results on google. I think the product might have been discontinued or something, or the number is not an actual serial number but a production line stamp.
Theik
CC BY-SA 3.0
2018-03-17T10:58:51.477Z
I googled in Dutch (one of the languages on the label) and found you this link. If you think it is right, I will convert it into an answer. https://artsupplyshop.nl/products/boetseerpasta/767825.html
Willeke
CC BY-SA 3.0
2018-03-17T11:05:30.323Z
It's possible, although my package contains 460G. That one claims it's airdry, which mine seems like it doesn't wan to do, though.
Theik
CC BY-SA 3.0
2018-03-17T11:06:26.920Z
In that case I am not converting it.
Willeke
<clay>
Can anybody identify this clay?
Theik
# Can anybody identify this clay?

(Asked by: username_0 on 2018-03-17)

One of my friends found a bunch of clay in their basement, still sealed, but outside of the original package. However, I am unable to figure out what kind of clay it is. I've checked the EberhardFaber site, but they no longer seem to sell this specific type, or I simply can't recognize it because it's outside of the original package.

Things I've tried:

* Airdry it, it's sat for a day without looking like it'll harden in
  the slightest.
* Bake it for a few minutes on a high temperature, the clay goes runny and melty.
* Bake it for 15 minutes on a lower temperature, the clay also goes slightly goopy. Does not harden after cooling down again.

[![Image of the clay](https://i.sstatic.net/Cxd5e.jpg)](https://i.sstatic.net/Cxd5e.jpg)

**Tags:** clay

> **Comments:**
> **username_1**: Have you noticed the number 8401 on the label?  
> **username_0**: I have, but "Eberhard Faber 8401" gets me no useful results on google. I think the product might have been discontinued or something, or the number is not an actual serial number but a production line stamp.  
> **username_1**: I googled in Dutch (one of the languages on the label) and found you this link. If you think it is right, I will convert it into an answer. https://artsupplyshop.nl/products/boetseerpasta/767825.html  
> **username_0**: It's possible, although my package contains 460G. That one claims it's airdry, which mine seems like it doesn't wan to do, though.  
> **username_1**: In that case I am not converting it.  

---

## 1 answers

### Answer by username_2 on 2018-03-17. Score: 7 | Accepted answer

This is non-hardening plasteline, also known as [plastecine](https://en.m.wikipedia.org/wiki/Plasticine).

For the record, although it is labeled as children’s modeling clay, I do not trust it to be non-toxic. Having worked with exactly this product in the past, I did find it to be great when building seals in damming walls of casting molds. If you want it to be harder, you can cool it / freeze it. This will not harden it, as you are only performing a state change in the oils / paraffins that are used to keep the mass malleable. I would be very cautious of overheating it, as you are likely to generate toxic fumes.

> **Comments:**
> **username_0**: Thank you, this explains a lot. I tried just about every trick I could come up with to get it to cure.  
> **username_2**: @username_0 - I updated my answer with a bit more information on the product.  

---

