Ahşap kaplama törpü yüzünden bozuldu.

Ahşap kaplama means something like wooden coating, wood veneer, or wooden covering, depending on context.

• ahşap = wood, wooden
• kaplama = covering, coating, veneer, plating

In this sentence, ahşap describes kaplama, so together they form a noun phrase: the wooden veneer/coating.

In Turkish, a noun can often function like an adjective without changing form.

So:

• ahşap masa = wooden table
• ahşap kaplama = wooden coating / wood veneer

English usually uses wooden as an adjective, but Turkish often just uses the noun ahşap directly before another noun.

Törpü yüzünden means because of the file/rasp or due to the file.

Breakdown:

• törpü = file, rasp, nail file, or a filing tool
• yüzünden = because of, due to, on account of

So törpü yüzünden gives the cause of the problem.

A very important nuance: yüzünden often suggests a negative result, similar to:

• because of
• thanks to → but only in a negative sense, not a positive one

So this sentence sounds natural because bozuldu is something bad.

Both can mean because of, but they feel a little different.

• yüzünden often implies blame or an unwanted result
• nedeniyle is more neutral and formal

So:

• Törpü yüzünden bozuldu. = It got damaged because of the file.
  This sounds natural if the result is bad.
• Törpü nedeniyle bozuldu. = It got damaged due to the file.
  More neutral/formal.

A learner should notice that yüzünden is very common in everyday speech when something negative happens.

Because yüzünden already works as a postposition-like expression meaning because of.

You learn it as a chunk:

• X yüzünden = because of X

Examples:

• senin yüzünden = because of you
• yağmur yüzünden = because of the rain
• trafik yüzünden = because of traffic

So in this sentence, törpü yüzünden is just the normal pattern.

Bozuldu is the past tense of bozulmak.

• bozulmak = to become spoiled, to break, to go bad, to get damaged, to stop functioning

So bozuldu can mean:

• it broke
• it got damaged
• it was ruined
• it went bad

In this sentence, the most natural translation is something like got damaged or was damaged.

This is a very important grammar point.

• bozmak = to break/spoil something
• bozulmak = to break/be spoiled/get damaged

So:

• Törpü ahşap kaplamayı bozdu.
  = The file damaged the wooden veneer.
  Here, bozdu is active/transitive: something damaged something else.

• Ahşap kaplama törpü yüzünden bozuldu.
  = The wooden veneer got damaged because of the file.
  Here, bozuldu focuses on what happened to the veneer.

Turkish often uses this intransitive/passive-like form when English might say was damaged or got damaged.

It is in the simple past tense.

Structure:

• bozul- = verb stem
• -du = past tense ending

Because the subject is third person singular (ahşap kaplama), there is no extra personal ending beyond that past marker in this form.

So bozuldu = it got damaged / it was damaged.

Turkish does not have articles like the or a/an.

So ahşap kaplama can mean:

• a wooden coating
• the wooden coating
• wood veneer

The exact meaning depends on context.

In a real conversation, if both speakers already know which coating is being discussed, English would usually use the, but Turkish still just says ahşap kaplama.

Here it is a noun.

Although it comes from the verb kaplamak (to cover / coat / plate), kaplama is commonly used as a noun meaning:

• coating
• covering
• veneer
• plating

So in this sentence, it is not functioning as a verb at all. The main verb of the sentence is bozuldu.

The basic order is:

Ahşap kaplama + törpü yüzünden + bozuldu
subject + cause expression + verb

This is a very normal Turkish sentence pattern, since Turkish usually places the verb at the end.

A rough literal order would be:

The wooden coating because of the file got damaged.

That sounds strange in English, but it is natural in Turkish.

Grammatically, yes, but in English spoiled may sound odd depending on the context.

Since bozulmak has a broad meaning, the best English choice depends on what kind of thing is being discussed:

• for food: went bad
• for machines: broke
• for surfaces/materials: got damaged or was damaged
• for plans/relationships: was ruined

For ahşap kaplama, got damaged or was damaged is usually the best natural translation.

Yes. Törpü can refer to different kinds of filing tools depending on context, such as:

• a file
• a rasp
• a nail file

So the exact image depends on the situation. If this sentence is about woodworking, file/rasp may be best. If it is about manicure or cosmetics, nail file could be possible.

Yes. A few possible alternatives are:

• Ahşap kaplama törpü nedeniyle bozuldu.
  = The wooden coating was damaged due to the file.

• Törpü, ahşap kaplamayı bozdu.
  = The file damaged the wooden coating.

• Ahşap kaplama törpüden dolayı bozuldu.
  = The wooden coating got damaged because of the file.

These are close in meaning, but the nuance changes slightly:

• yüzünden = often negative/blaming
• nedeniyle = neutral/formal
• -den dolayı = common, fairly neutral
• bozdu = active, direct cause
• bozuldu = focuses on the result on the object

Yes, it is grammatically natural. The only thing that depends on context is whether kaplama is the most precise word for what is meant.

If the object is specifically a veneer layer, ahşap kaplama is very plausible. If the context is something else, a different noun might be more precise. But as a Turkish sentence, Ahşap kaplama törpü yüzünden bozuldu. is perfectly understandable and natural.