Watch Case Polishing, Burnishing, Mirror Finishing Automatically with Inovatec Machinery

  • Big Batch Processing Watch Cases in a short time
  • Consistent Surface Finishing with no parts Damage
  • Surface smoothing, cleaning, drying and mirror shiny
  • Suitable for Stainless steel, bronze, ceramics, titanium
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Inovatec MachineryYour Best Watch Caese Automatic Polishing Solution Provider in China

Inovatec has over 20 years’ experience in watch cases surface finishing and polishing. We developed a different process to meet your watch cases of different materials and manufacturing methods. Let us know your requirement. We will improve your watch cases surface finishing to the next level.

2. Centrifugal Barrel Finishing machine

Centrifugal Barrel Finishing Machine is the high energy process mass finishing equipment. It effectively smoothes the rough surface of the watch case. It is widely used in a 3D printed watch case and casting watch case.

TDG-4 Drag Finishing Machine polishing machine

Drag finishing machine is suitable for watch case rim polishing. With a suitable clamping device, you can finish hundreds of watch cases at the same time. It is suitable for stainless steel watch cases and titanium alloy watch cases.  Besides, drag finishing machine is ideal for dry polishing and mirror polishing.


Vibratory Finishing Machine is the most common surface finishing machine. It is ideal for watch cases cleaning and light deburring. It also works well for polishing.

Economic small vibratory tumbler

The economic vibratory tumbler is suitable for small scale watch case tumbling and polishing. It is suitable for ceramic 3d printed watch cases smoothing with ceramic deburring media.

Material and Process of Watch Cases

The stainless steel watch case is the most common case material. We use the drag finishing machine for the rim polishing.

Titanium watch cases are for high valued watch. We use the drag finishing machine with top quality dry polishing media to do mirror finishing.

Bronze watch case usually used for the luxury watch case. Because the production volume is not very big, we use centrifugal barrel finishing machine polishing.

Ceramic watch case are very fragile material. For 3d printed ceramic watch cases we use vibratory tumbler to improve the surface smoothness and reduce Ra.

The machined watch cases have machining marks. For aluminium materials, we use vibratory finishing machine to remove them.

3D printed metal parts have a very rough surface. Therefore, we use a centrifugal barrel machine to improve the surface condition. In addition, we use the divided slot to prevent parts impingement.

Mass Finishing Media

Inovatec has a wide series of mass finishing media. Our ceramic media can smooth your 3D printed watch cases surface. Also, the plastic media is ideal for surface smoothing. Besides, the dry polishing media walnut shell is the perfect choice for dry polishing and mirror shining.

Inovatec Machinery – China Leading Watch Cases Surface Finishing Solution Provider & Manufacturer
  • We choose the right mass finishing media to watch parts
  • Free Parts processing and send back for your check
  • Fully automatic labour-saving process
  • OEM process design and machine design

Frequently Asked Question
What is the MOQ for your surface finishing machine?

Our watch case polishing machine MOQ is 1 pcs.

How do you make the packaging?

We use the wooden box to pack the machine. It protects the machine during the shipment. The wooden box is a fermentation box, so it meets the international shipping standard.

Do you offer free sample processing?

Yes, we offer free parts processing upon your requirement. You can send the parts to us and we will polish them and send you back for your evaluation.

How long do you need to prepare the goods?

The production time is 20-25 days usually. We also make fast production on your request if you have an urgent shipping schedule.

What is the nearest port?

Our nearest port is Shanghai, Ningbo and Yiwu. We can also ship to your port or other locations.

Watch Case Polish – The Definitive Guide

In today’s world, your sense of fashion has a significant influence on how you’ll be perceived.

One of the most vital elements of your fashion is your wristwatch.

Your wristwatch is one of the most attractive elements of your fashion.

Scratches and discolouration are not what you want on such a key element.

In this article, you’ll see how to improve the surface and look of your wristwatch parts.

This article has been specially designed to answer your questions about wristwatch parts.

Keep reading to find out more.

l. What types of watch case are there in the market?

Now, there are several types of watch case in the market today. They all are made from different materials.

You’ll find watch cases made from stainless steel, bronze, 3D printed, titanium, ceramic or even machined watch cases.

They are the most popular ones because of their sleek and shiny look.

These watch case are treated differently in terms of cleaning and polishing them.

You can decide to polish yours in a more straightforward way, that is, manual polishing. This entails using a polishing agent and a brush.

You can also decide to clean it in a quicker, efficient and easier way.

The automatic way involves using a professional watch polishing machine, polishing media together with cleaning agents.

It is a quicker way and efficient for you because you’ll leave the machine to work on your behalf.

Further, if you have several wristwatch cases, you can clean their parts using the automated method.


Bottom line:

Your fashion dictates how people perceive you. Your wristwatch parts can be cleaned to make you look better.

The automatic system of polishing your watch case parts would be most efficient and effective. It also saves time.


2. What is the Difference Between Manual and Automatic Watch Case Polishing?

Now, manual polishing, as the name suggests, involves polishing your watch case manually.

That involves using a watch polishing kit, which will have a watch polishing cloth, brush, polishing compound and watch polishing tools.

Figure 1 - manual watch polishing


Manual polish of watch case requires a lot of attention and caution. You do not want to polish one side better than the other.

It is a process that requires high detailing, polishing agents, brushes of different sizes to reach the most intricate parts.

As for automatic polishing, you require a tumbling machine to complete the process with a lot of ease.

Figure 2-automatic watch polishing

It involves using abrasive media and perhaps a polishing agent.

They are useful as different shapes, sizes and angles of a polishing machine media reach the most intricate parts of your watch case parts.

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There are numerous advantages of using the automatic method of polishing compared to using the manual process.

The first benefit is that you will polish your parts uniformly. You do not want to clean your pieces in a non-uniform manner.

A non-uniform polish will make your polish on these parts look amateurish.

Secondly, automatic polish saves you a lot of time and energy, especially if you have a lot of watch parts to polish.

The automatic polishing machine completes polishing these parts for you, depending on the level of polish you require.

The process takes several hours to complete, unlike manual polishing which may take up to several days of intensive work.

Thirdly, polishing media comes in different sizes, shapes and angles. This makes the polishing process easy and efficient.

When these abrasives come in different shapes, sizes and angles, it means that they will reach the most intricate parts with ease.

One thing that you must never do is mixing different types of abrasive media in a single cycle.

You also must not mix different types of polishing compounds. They will have a negative effect, in terms of looks, of your watch case.

It does the opposite of what you expect:

Mixing ruins your watch case looks and makes it look awful – you’ll not desire to wear it in public.

The best thing about using an automatic watch polishing machine is that, when done well, it does not ruin the surface of your wristwatch case.


In summary:

Automatic polish is more beneficial to you than manual polishing, bearing in mind the time, cost and effort used.

Automatic polish of your wristwatch parts involves using a watch polishing machine with abrasive media on its bowl, either dry or wet polishing.

Using the automatic process will ensure that all your parts have been polished evenly.

Further, you can also polish several parts simultaneously, unlike manual polishing which limits you to one piece at a time.

Also, the energy spent during manual polishing is too much, compared to automatic polishing where the tumbler works on its own.

The automatic polishing machine requires little to no supervision during the process.


3. How do I Remove Scratches From My Stainless Steel Watch Case?

Now, stainless steel is a robust and heavy metal. It also has a sleek and shiny look which makes it attractive.

Scratches and light dents on your stainless steel watchcase make it lose its beauty.

To polish your stainless steel watch case, you will use the drag finish process, which involves improving the surfaces of delicate parts.

The reason why drag finish is used is that it has become so popular nowadays.

Also, the process uses a machine (drag finish machine) which drags these delicate parts at high speed through abrasive media.

This dragging of delicate parts in abrasive media creates friction which is essential in polishing.

stainless steel watch case

Also, when rotating and dragging parts through abrasive media, the drag finish machine creates high pressure.

Now, high pressure in addition to friction aids you in polishing your delicate stainless steel watch case quicker and better.

Another advantage of using the drag finish machine on your stainless steel watch case is that there will be not part of part contact.

This lack of contact for similar parts reduces dents on your watch case by 99%.

drag finishing machine fixture with watch cases

If your stainless steel watch parts have been damaged, for example, by falling, tiny burrs develop.

As such, drag finish process also deburrs your stainless steel watch case to have the sleekest, scratch-free and a shiny look.

The drag finish process is so effective that it does the preparation for medical implants for artificial knees.

Imagine what it will do to your stainless steel watch case.

Further, the process is automatic, which means, the machine can run day in day out, provided the correct parameters have been submitted.

By automating the process of polishing your stainless steel watch case, human error is absolutely made away with.

That means your watch case will come out sleeker and shinier like never before.



4. How Can the Original Color of My Watch Case be Restored?

It is true that:

Over time, your watch case will discolour and have minor to major scratches.

Now, to restore the original colour of your watch case, what you simply have to do is to determine your watch case material type.

For example, you may have a watch case that has a sliver-shiny colour. To restore its original colour, you just need to polish your watch case.

For the case of golden and shiny watch cases, you will have to re-coat it using Physical Vapor Deposition, or simply PVD.

Also, you will first have to polish, that is, drag finish process your watch case part before carrying out the PVD coating process.

The PVD coating technique is applied in an extremely thin film to your watch case that requires redecoration and a protective barrier.

There are several advantages of using PVD for your watch case parts.

Figure 4 - color restoration

The main advantage is that it does not wear out unless you decide to remove it yourself.

The process is quite complicated and requires professional help. Why?

PVD coating is a special coating that requires chemical reactions to work as intended.

The coating process must be done in some special chambers that are extremely clean – free of contaminants.

If the PVD gets contaminated, the whole process will be a waste of time.

This extreme caution while coating and the right chemical reactions are what make the layer robust and resistant to wearing out.

Another incredible advantage is that the PVD polish will be a uniform one. Non-uniform polish makes your watch parts look bad.

The PVD coating, yet again, reaches the most intricate parts and it will be most suitable for your watch case.

There are corners where it would be challenging for human methods to restore colour on your watch case. PVD coat sorts it all out.

Also, with the PVD coating on your wristwatch parts does not change its dimensions.

It reinstates the original beauty without changing its dimensions.

Also, during a busy and hot day, you tend to sweat. Your sweat will still not be able to remove the new PVD coating.

Also, the process is cost-effective, which makes it the most suitable method of restoring the original colour on your wristwatch case.


Bottom line:

PVD coating is used to restore the original colour of your wristwatch case. It is the easiest and most efficient way of colour restoration.


5. How Can I Clean My Titanium Watch Case?

Cleaning your titanium watch case is a very easy and straightforward process.

The most effective way is to use a drag finishing machine to complete the process.

Drag finishing is the easiest way for cleaning your titanium watch case.

The drag finish process of finishing is highly effective and efficient. It works by dragging your delicate parts through abrasive media.

The process is so different from other finishing processes, for example, rotary and vibratory finishing processes.

Figure 5 - polished titanium watch

With the drag finish process, there is no part to part contact, which means that you will not have dents nor scratch marks on your parts.

Drag finish completes polishing parts in almost forty times faster than other methods of finishing.

These drag finishing machines are capable of finishing many watch case at a single cycle.

You only need to feed the machine with working parameters and leave it to do what it does best – finishing parts en masse.

The process of polishing your titanium watch case has been simplified by using this process.

It is also economical as you can reuse your polishing grit.

You are assured that your titanium watch case will have that sleek and shiny look because the drag finish machine works to perfection.

These machines are used to polish medical implants such as artificial knees.

Imagine how exceptionally well it will work on your titanium watch case.


In summary:

Polishing your titanium watch case is straightforward. You only need to drag your parts through abrasive media, preferably organic media.

The process will take a few hours to complete.

You can reuse media for long as the process does not require a lot of effort compared to rotary and vibratory tumblers.


6. How Can I Polish My Ceramic Watch Case?

You can polish your ceramic watch case using a vibratory tumbler, as ceramic 3D printed watch case are quite fragile.

You can use plastic media to finish the polishing process of your ceramic watch case.

Plastic media comes in different shapes and sizes, which ensures that all the parts of your ceramic watch case have been cleaned.

They clean even the most intricate parts of your watch case.

Figure 5 - polished titanium watch

You will be required to use a vibratory tumbler to complete the process.

Using plastic media removes scratches from your ceramic watch case and makes it look new again.

The process should not take long, and also, you can finish many ceramic watch case at the same time.

You can decide to dry polish, using appropriate polishing pastes and powders.

You can also choose to wet polish, using a polishing compound. Make sure that you use the correct amount of polishing compounds.

It will help you avoid overflows. Also make sure you dispose of the waste polishing compound, for the sake of your health and the environment.


7. Is Polishing Brass Watch Case Any Different from that of Stainless Steel?

Bronze is a luxury metal and is polished differently from the stainless steel watch case.

For bronze watch case, you’ll use centrifugal barrel finishing. The centrifugal barrel finishing machine works in an exciting way.

centrifugal barrel finishing machine working principal

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The centrifugal barrel finishing machine is cost-effective as it works almost similar to a barrel tumbler, but, faster and better.

The centrifugal barrel finishing machine has four drums fixed on a single flywheel that spins at high speeds.

The centrifugal barrel finishing machine, as the name suggests, does what it does best (polish) by generating centrifugal force.

The four barrels each rotate in a counter-direction from the main flywheel to generate the centrifugal force.

It spins its barrels at a predetermined speed for the best results on your bronze watch case.

centrifugal barrel finishing equipment

These predetermined speeds generate an accelerated abrading process, thus polishing your bronze watch case faster.

This process can polish your bronze watch cases from minutes to several hours, depending on the degree of finish you require.

Other processes may take longer, which becomes inefficient and uneconomical.

The machine places a lot of stress on the media and the bronze watch case, thus making the process a lot quicker.

Figure 5 - polished titanium watch

With this machine, you can decide to either use dry or wet polishing process.

Both processes will deliver what you require them to – or even give you better results.


Bottom line:

Polishing bronze watch case is totally different from that of the stainless steel watch case.

The significant difference between these two processes is the tactic that is used to polish the surfaces of these two watch case.

The reason behind that is because bronze is a luxury metal.

The quicker the process is completed, the better for you. It’ll aid you in terms of efficiency and economic feasibility.


8.  Is it Expensive to carry out Watch Case Polishing?

Well, to start with, watch case polishing is essential, as it enhances the look of your wristwatch.

Now, when polishing your watch case, the process should not be expensive, as long as you follow the correct procedure.

Failure to follow the set-out procedures, for example, mixing different types of grit when polishing your watch case leads to further polishing costs.

This is because your watch case will not have the desired look that you anticipate to have.

Further, you’ll have already used your time, electricity and perhaps even polishing compounds, which will all go to waste.

You need to know your watch case type, as there are different types of watch case in the market, for example, bronze, ceramic, stainless steel, etc.

Afterwards, you will then decide the best way to polish it. For stainless steel, 3D case and titanium, drag finishing would be most appropriate.

For bronze watch case, centrifugal barrel finish would be most appropriate and efficient.

As for the ceramic and machined watch case, vibratory tumbling will be the best alternative.


Bottom line:

The polishing process of watch cases is not expensive or complicated provided the correct procedure is followed.


9 How Can a Gold Plated Watch be Cleaned Effectively?

Gold plated watch case popularly have intricate designs which make them unique.

Now, there is a difference between gold plating and gold filling that you have to understand.

You’ll first have to know whether your watch is gold plated or gold filled.

They both involve depositing thin layers of gold on the surfaces of other metals.

Figure 9 - Gold plated watch design

The only difference is that with gold plating, the layer of gold is deposited on the surface of another metal electrochemically.

As for the gold filling, the layer of gold amounts to almost 5% of its total weight. It is deposited on the surface of another metal mechanically.

For your gold plated watch case to lose its initial gold colour (tarnishing), it may take several months to several years.

However, that will depend on the thickness of the gold layer deposited on your watch case during the industrial electrochemical process.

As for gold filled watch case, it may take up to 30 years for the layer to fade away due to tarnishing.

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The reason why gold filled case last will last longer than gold plated ones is because the gold-filled case is ten times thicker than the gold plated ones.

Cleaning your watch case which has deposits of gold is not an easy process. It will require professional help.

Professional help will aid you in re-plating and refilling your watch case because the dimensions of the watch case should not change.

Also, the process may be quite expensive to carry out in your garage compared to seeking professional help.

The dimensions are calculated to the most minute point – the micron. The plating should be five to ten microns.

This re-plating process is laborious when carried out without professional help, considering the complex designs of the wristwatch parts.

Also, before re-plating or refilling your watch case, refinishing will have to be done, to do away with existing scratches, dents and burrs.


In summary:

The process of cleaning your gold plated, or gold-filled watch case requires professional help to restore clean and restore its colour.

The main difference between gold plating and gold filling is the method of gold deposition on the surface of the watch case.

The gold plated watch case has gold deposited on them electrochemically while gold filled watch cases have gold deposited on them mechanically.

Gold-filled lasts for long compared to gold plated watch cases. Gold fill amounts to 5% of the total weight of your watch case.

The gold fill can last for up to 30 years and still look new.


10.  Can Watch Case be Mass Polished?

Yes, watch case can be mass polished, depending on what material has been used to make your watch case.

Most modern finishing machines nowadays can finish parts en masse, which makes them both effective and efficient.

For example, for the ceramic and machined watch case, vibratory tumblers are used.

Vibratory tumblers are used in mass finishing processes, where media and compounding agents are used.

Also, for titanium and stainless steel watch case, you are to use a drag finish machine to complete the cycles exceptionally well.

The machine completes cycles 40 times faster than using a vibratory or rotary tumbler. It also does mass finishing of parts.

For 3D and bronze watch case, centrifugal barrel finishing is used to complete cycles.

The centrifugal barrel finishing machine has four barrels, each of which can finish parts en masse.


Bottom line:

You can finish preparing the surfaces of the watch case with these modern machines en masse.

The processes are straightforward and can be completed within minutes to hours, depending on what material you are polishing.


11.  Will polishing my watch case reduce the price of my watch?

Eventually, the price of your watch is bound to reduce over time. In line with that, polishing your watch case also reduces its cost.

When you polish a watch, you need to make sure that you are careful when handling it.

Improper handling will lead to re-polishing outside its service intervals.

These improper re-polishing intervals eventually lead to the thinning of your metal, therefore, reducing the lifespan and general price of your watch case.

However, regular polishing with intervals is necessary to make your watch case look new and awesome.


12. What is polishing media used to clean watch cases?

Tons of polishing media can be used to improve the surfaces of your watch case.

However, there are specific types of media that have proven to be both practical and super efficient at the same time.

For example, when polishing using a ceramic vibratory tumbler, using plastic media to improve the surfaces of your watch case is most appropriate and widely used.

Again, when using polishing machines such as the drag finish machine, you need to use fine polishing grit.

The best polishing grit for a drag finish machine would be organic media, such as walnut shell grit, which is relatively robust.

It is also highly absorbent on impurities such as oils. It will polish your stainless steel and titanium watch case excellently.


In summary:

You can polish your watch case and watch parts using different media, depending on the type of case you have and the process to be used.

Regularly used media include synthetic and organic media.


13. How Long Does it Take to Polish Watch Case Parts?

The duration used in polishing your watch cases should not take long.

However, it depends on your material and the process you intend to use during the process.

There are different types of watch case whose surfaces are each prepared differently.

For example, the process used to polish stainless steel and titanium is not the same process that will be used to polish bronze and 3D watch case.

The drag finish machine used to finish stainless steel and titanium takes hours to complete the whole process.

The machine does not encourage part to part interaction which means that your pieces will not have any dents.

Also, with the vibratory tumbler, the process takes only a few hours to complete, depending on what you want to achieve.

A centrifugal barrel finishing machine also utilizes centrifugal forces and adds stress on media and parts which hastens to polish.


Bottom line:

With modern machines, the process should not take long, depending on the level of fineness you require.

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