אנחנו ממרכזים את גוש החימר לפני שמעצבים אותו.

ממרכזים means centering or we center in this context.

It comes from the noun מרכז, meaning center, and the verb pattern turns it into to center. In pottery, למרכז means to place the clay so it is properly centered on the wheel.

ממרכזים is a present-tense plural form, so with אנחנו it means we are centering or we center.

A useful breakdown:

• מ-...-ים = present plural masculine form
• base idea: center

So the sentence is talking about the action of centering the clay before doing the next step.

Hebrew often allows the subject to be omitted, because the verb form already gives information about number and sometimes gender.

So both of these can work:

• אנחנו ממרכזים
• ממרכזים

Adding אנחנו makes the subject explicit: we. It can sound a bit clearer or slightly more emphatic, especially in explanation or instruction.

So here, אנחנו is not strictly necessary, but it is perfectly natural.

את marks a definite direct object in Hebrew.

Here, the direct object is גוש החימר = the lump of clay / the clay lump, and it is definite because החימר has ה-.

So:

• ממרכזים את גוש החימר = we center the lump of clay

This does not mean with here. That is a very common confusion for English speakers, because את can also be a preposition in other contexts, but in this sentence it is the direct object marker.

גוש החימר is a very normal Hebrew construct phrase.

It literally looks like:

• גוש = lump / block
• החימר = the clay

Together: the lump of clay

In Hebrew, this kind of noun + noun structure is very common, and it often replaces English of.

So גוש החימר is more natural than הגוש של החימר in most contexts.

Also notice an important rule: when a construct chain is definite, usually only the second noun gets ה-.

So:

• גוש חימר = a lump of clay
• גוש החימר = the lump of clay

Hebrew commonly uses לפני ש- + a conjugated verb to mean before doing something.

So:

• לפני שמעצבים אותו = before shaping it

This is very natural Hebrew.

You can also sometimes see an infinitive after לפני, especially in more formal or different stylistic contexts, but לפני ש- is extremely common in everyday Hebrew.

In this sentence, לפני שמעצבים אותו sounds like:

• first we center it,
• then we shape it.

In שמעצבים, the subject is not stated explicitly, but it is understood from context.

Literally it is something like:

• before they/people shape it
• or more naturally in English: before shaping it

Hebrew often uses a plural verb like this in a general or impersonal way, especially in instructions or descriptions of a process.

So לפני שמעצבים אותו does not have to mean that some other people shape it. It can simply mean before we shape it or before one shapes it, depending on context.

If the speaker wanted to be very explicit, they could say:

• לפני שאנחנו מעצבים אותו

But the shorter version is very natural.

אותו means him or it as a direct object pronoun. Here it means it.

It refers back to גוש החימר.

Why masculine singular? Because גוש is a masculine singular noun. Hebrew object pronouns must agree with the noun they refer to.

So:

• אותו = masculine singular object = it/him
• refers to גוש

If the noun were feminine singular, you would use אותה.

In modern Hebrew, direct object pronouns are usually written as separate words after the verb:

• מעצבים אותו = shape it
• רואים אותו = see him/it
• לוקחים אותו = take it

This is the normal modern pattern.

Hebrew does have older or more literary ways of attaching pronouns in some structures, but not here. So מעצבים אותו is exactly what you would expect in standard modern Hebrew.

Yes, it is in the present tense.

Hebrew present-tense forms often cover both:

• we are centering
• we center

The exact English translation depends on context.

In a process description, this sentence probably means something like:

• We center the lump of clay before shaping it or
• We are centering the lump of clay before shaping it

Hebrew does not always make the same continuous/simple distinction that English does.

ממרכזים is in the Pi'el verb pattern.

That matters because Pi'el often gives a verb an active, intensive, or causative-like sense, and many modern Hebrew verbs built from nouns appear in this pattern.

Related forms:

• infinitive: למרכז = to center
• past: מירכזנו = we centered
• present masc. plural: ממרכזים
• present fem. plural: ממרכזות

For learners, the most useful thing is to recognize that ממרכזים belongs to the same family as למרכז.

The word order is natural and clear:

• אנחנו ממרכזים את גוש החימר
• לפני שמעצבים אותו

This is basically: subject + verb + object + time/clause

Hebrew word order is somewhat flexible, but this order is the most straightforward for a neutral statement.

You could move parts around for emphasis, but the sentence as given sounds natural and instructional.