Avstøpningen er klar.

In Norwegian, the definite article is usually attached to the end of the noun.

• avstøpning = indefinite form
• avstøpningen = definite form, meaning the avstøpning

So the ending -en is doing the job that English the does.

The dictionary form is avstøpning.

That is the indefinite singular form, the form you would usually look up in a dictionary. In the sentence, it appears as avstøpningen, which is the definite singular form.

In Bokmål, this kind of noun can often be treated as feminine or with masculine-style endings, depending on the speaker or writing style.

So you may see:

• en avstøpning → avstøpningen
• ei avstøpning → avstøpninga

In your sentence, avstøpningen uses the -en definite ending, which is very common in Bokmål.

Because klar has to agree with the noun in gender and number.

Here, avstøpningen is singular and non-neuter, so the adjective is klar.

Compare:

• en/ei avstøpning er klar
• et hus er klart
• avstøpningene er klare

So klar is the correct form here.

Because klar comes after er, so it is a predicative adjective.

In Norwegian, predicative adjectives agree with gender and number, but not with definiteness in the same way adjectives before nouns do.

So:

• Avstøpningen er klar = correct
• den klare avstøpningen = also correct, but here the adjective is placed before the noun

That is an important difference:

• before the noun: adjective reflects definiteness
• after the verb: adjective just matches gender/number

Er is the present tense of å være, which means to be.

So:

• å være = to be
• er = am / is / are, depending on context

In this sentence, it means is.

No, this is a very straightforward sentence.

The structure is:

• Avstøpningen = subject
• er = verb
• klar = adjective describing the subject

So it follows the normal pattern:

subject + verb + complement

Very similar to English The avstøpning is ready.

No. Klar can mean different things depending on context, such as:

• ready
• finished
• clear
• obvious

So when you learn klar, it is better to think of it as a flexible word whose exact English translation depends on the situation.

Yes, in Bokmål that can also be possible if you are using feminine noun forms.

So both of these may occur:

• Avstøpningen er klar
• Avstøpninga er klar

The first one is more neutral and very common in Bokmål. The second one sounds more explicitly feminine in form.

A rough guide is:

• Avstøpningen ≈ ahv-STURP-ning-en
• er ≈ a short ehr or sometimes very reduced in natural speech
• klar ≈ klahr

A few helpful notes:

• The stress is mainly on støp
• The letter ø has no exact English equivalent
• klar has a long vowel sound, not the English sound in clear

If you want a simple rhythm, think:

av-STØP-ning-en er klar

Not usually. It is more of a technical or context-specific word.

You are likely to meet it in areas such as:

• art
• dentistry
• medicine
• manufacturing
• archaeology

So the grammar in the sentence is very useful and basic, but the noun itself is a bit specialized.

The adjective would change to match.

For example:

• singular, non-neuter: Avstøpningen er klar
• plural: Avstøpningene er klare
• neuter noun: ... er klart

So this sentence is a good example of adjective agreement in Norwegian:

• klar for singular non-neuter
• klart for singular neuter
• klare for plural