Polishing machine comparison 2018

Purchase advice for the polishing machine comparison or test 2018

  • A polishing machine is suitable for bringing surfaces of metal, paint or stone to shine. There are different soft and hard polishing wheels, which remove small amounts of material in circular movements or press it flat and smooth it.
  • For beginners, rather an eccentric polisher is, it is in the handling and the speed range but easier to master than the rotary polisher, which is aimed more at advanced users.
  • Although it works much like an angle grinder (also called flex), the polisher is not suitable for rough grinding. This requires a separate work step with a suitable grinder. The subsequent polish is a clear matter for the polishing machine.

Polishing machine comparison 2018: polishing

If you have a Want to see a shiny metallic or painted surface in high gloss, is usually the use of a polishing machine cheap. Both car enthusiasts, who are dedicated to paint care to their vehicle, as well as those who have many stainless steel surfaces in the apartment, know and appreciate the polish with this device.

That the demand for this is there, is also occupied by numbers. In 2015, cutting and machining tools worth almost € 8.5 billion were produced in Germany (source: VDW, Federal Statistical Office, VDMA). What are the technical criteria, which categories are there and wie you will find your personal polisher test winner, we explain in our polishing machine comparison 2018.

  • For comparison, the eccentric grinder
  • For comparison, the orbital sander
  • For comparison, the delta sander

1. This is how a polishing machine works

Polishing machine comparison 2018: comparison

Handles on both sides of the polishing machine (in the picture the Einhell CC PO 90) facilitate the work.

If you've ever tried mirroring a surface yourself, you probably know how time-consuming and exhausting it can be if you do it with mere muscle power. Here is a Polishing machine as the best alternative to bring the paint of your car back to a shine.

It is used for smoothing surfaces and can also repair edges or scratches in the paint, that these are visually hardly recognizable or no longer recognizable. The polishing machine does this by removing some material or by leveling the unevenness on the surface by pressure. She can do that not only on soft surfaces, but also on metal or stone.

Depending on the type of polishing machine The polishing pad moves either in an ellipsoidal path (eccentric polishing machine) or it turns alternately to the left and right (rotary polishing machine). What distinguishes both, you will find in chapter 3 of the guidebook.

2. Purchase advice for polishing machines: from the power, the polishing wheels and the revolutions per minute

Do not get the paint off

Polishing machine comparison 2018: polishing

If the polishing pad or polishing sponge is smaller than the polishing pad, it is possible that the polishing pad itself comes in contact with the surface to be machined and scratched the paint of the car. If the polishing plate has, for example, a diameter of 180 mm, the pad should measure at least 200 mm, By the way: For large, flat surfaces such as the bonnet, working with a large polishing attachment of 180 or 240 mm is faster. For smaller or strongly rounded components such as rear-view mirrors, it is best to use small polishing sponges of 50 mm.

2.1. Power and revolutions per minute

Similar to other electrical appliances, the power in watts only indirectly indicates the effectiveness of the polishing machine. The value indicates how much electricity a polisher consumes. However, as shown by polishing machine tests, it is equally relevant whether the motor of the polishing machine is capable of implementing this power well. Depending on the type of polisher, however, there are minimum values ​​that should be met:

  • Eccentric or rotary sander should have at least 200 watts of power.
  • angle need at least 1,200 watts.

The reason for this is simple: If the rotary or angle grinder does not produce enough power, the polishing plate will not turn properly even at low pressure and the polishing level will be at its most moderate. Also, the larger the polishing plate, the higher the performance should be.

Also relevant are the revolutions per minute (RPM), also referred to as idle speed. At least 2,500 rpm should create a polishing machine, because the number of revolutions decreases with increasing pressure on the surface to be polished. Especially with most devices for home improvement needs can this Also adjust the value continuously upwards and downwards, which simplifies the work for newbies.

Much does not always help a lot: If you have never worked with a polisher, you should start with the lowest speed first to avoid the chapped, circular grooves in the paint, also called holograms. Polishing machines for domestic use therefore usually have a continuously adjustable number of revolutions. Professional devices, on the other hand, work with fixed speeds of about 7,000 rpm, because with proper handling, work can be done faster here.

2.2. The polishing attachment - different materials for different objectives

Use the right polish

Always make sure to use a polish that is also suitable for machine polishing. Hand polishes heat up quickly at high speeds and stick to the paint. In addition, you should choose the grain according to the task. A coarse-grained polish removes more material and is well suited for scratch removal. Finer polishes are used, if you want to bring the paint of your car later on glossy. The polish should have about the consistency of yogurt. So it can be easily applied to the polishing sponge and distribute. Never apply the polish directly to the paint!

Equipped with both right- and left-hand threads, this construction ensures that the polishing pad can not fall off while it is constantly moving due to the many turns. It is held either by mother or jaws. The polishing pads are usually made of lambskin or foam (polishing sponge).

The first material produces more abrasion and is therefore primarily suitable for removing scratches or scores, but can also cause them if handled incorrectly.

Polishing sponges are available with different degrees of hardness and structures. For the first polish is usually recommended a medium-hard sponge with fairly fine pores, for the high-gloss polish, however, are soft, wadded polishing sponges best, If you need to work deeper scratches, a hard polishing pad with fine pores, along with a coarse polishing paste, is needed.

3. Eccentric Polishing Machine or Rotary Polishing Machine: Which device for which purpose?

Before you buy a polishing machine, you should know a decisive difference in the design method. There are brands that manufacture eccentric polishers and rotary polishers and in our table we'll explain what it's all about.

device typedescription

Polishing machine comparison 2018: comparison

  • good for inexperienced users
  • easy handling - stops when tilted or too high pressure
  • Polishing plate moves elliptical - no rotation
  • reduces the risk of creating holograms on the paint
  • usually slightly lower, infinitely adjustable speed (about 3,000 to 4,000 rpm)
  • slightly quieter and cheaper than a rotary machine
rotary polisher

Polishing machine comparison 2018: polishing

  • suitable for experienced users and professionals
  • Polishing plate rotates left and right
  • difficult control
  • more effective polishing - time savings
  • higher power and speed - more heat development
  • better suited for coarser paint damage and heavily weathered paint
Alternative multi-function tool? Stiftung Warentest - even without a polishing machine test - already pointed out in its issue 02/2004 that combi tools with several functions are practically suitable for different work processes, but quickly reach their limits in coarser grinding tasks. A multi-tool is then inferior to a thoroughbred polishing machine in terms of performance and result quickly.

Polishing machine comparison 2018: machine

The structure of a polishing wheel for the angle grinder shows that the attachment is more suitable for rough work.

Some guidebooks also read that Instead of a polishing machine also an angle grinder used in the set with a matching polishing pad can be.

However, the functionality only resembles that of a rotary polisher at first glance: The grinding or cutting disc rotates in one direction with a sporty 6,000 to about 12,000 revolutions / idling. Although there are also polishing grinders for angle grinders, which are more than 100 mm, however, they are usually slightly too big for smaller work surfaces to polish the paint. Due to the fixed direction of rotation, holograms in the paint also develop faster.

The advantages and disadvantages of an angle grinder compared to a polishing machine for the paint polish at a glance:

  • high number of revolutions - good for large-scale paint removal
  • Also suitable for separating metal
  • One hand grinder slightly lighter than polishing machine
  • high rpm - can quickly cause damage in the paint
  • Speed ​​rarely adjustable
  • one-sided rotation can cause holograms

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