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cover of episode How do you make clay for pottery?

How do you make clay for pottery?

2025/1/30
logo of podcast Moment of Um

Moment of Um
AI Deep Dive AI Chapters Transcript
People
A
Anna Goldfield
B
Bree
L
Lauren Sandler
Topics
Bree: 我想知道制作陶器用粘土的方法。 Lauren Sandler: 粘土是经过长期风化分解的火成岩,例如长石。长石是一种常见的造岩矿物。当长石风化时,会发生化学变化,水分子与长石发生化学键合,这使得粘土变得柔软易塑。当我们用粘土制作东西时,我们用手塑造它,然后放入窑中进行高温烧制。在这个过程中,化学键合的水分会逸出,材料会变回石头。形成粘土需要数千年的时间,而将其烧制成石头则只需几小时。并非所有粘土都相同,并非所有粘土都适合制作陶器。我们可以通过观察粘土的特性来判断其是否适合制作陶器。例如,我们可以取一些泥土,搓成球或线圈,观察其形状保持能力。如果它能保持形状,则说明其中含有细小的颗粒,即粘土。然后,我们可以弯曲线圈,观察其弯曲程度。如果它不易断裂,则说明其中含有较多的粘土,适合用来制作陶器。 Anna Goldfield: 如果我想制作像博物馆里看到的陶器,我需要自己挖掘粘土,并将其与其他土壤和沉积物分离。这需要将粘土浸泡在水中,让较重的粘土沉到底部,而其他物质则漂浮在上面。这可能会弄得很脏,而且我不应该在我的前院挖大洞。

Deep Dive

Shownotes Transcript

Clay is neat stuff. You can knead it, shape it, carve it, sculpt it, and make all kinds of beautiful creations. It goes from soft and squishy to hard and breakable when it’s baked in a kiln. But clay is…dirt, right? It comes from the ground! So how do you get it* out* of the ground and into the blocks that you find at an art supply store? We asked ceramic artist and educator Lauren Sandler to guide us through the process. 

Got a question that you just knead an answer to? Send it to us atBrainsOn.org/contact), and we’ll help mold an answer into shape for you!