Why does my orbital sander jump?

If you feel the sander bouncing as the pad rotates, then you most likely need a new backup pad. The PSA disks are often harder to remove from old worn out pads, as shown by the amount of PSA adhesive that remains stuck to it. The H&L disks will fly off of the backup pad when worn out.
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Should I push down on orbital sander?

Don't do it. The weight of the sander, plus your hand and arm, is enough pressure. Pushing down does remove wood faster, but it's counterproductive. It can slow or stop the pad's rotation, creating those ugly swirls.
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Is a random orbital sander supposed to spin?

A random orbital palm sander is for more versatile tasks than a standard orbit palm sander. The random palm sander has a round pad that spins as it moves in a circular motion, while the standard sander pad does not spin as it circles.
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How much pressure should I put on my orbital sander?

On the pneumatic sanders, the main factors contributing to the RPM is having sufficient air pressure and keeping the machine well lubricated. The pneumatics are designed to run optimally with an air pressure of 90 PSI at the sanding machine, and should be oiled daily, if they are used heavily.
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When should I change my orbital sander pad?

You should change your sandpaper when it gets too clogged by the material you are sanding or if the abrasive side is too worn down to smooth out your surface. If you have noticed that you have to apply much more pressure or it takes too long to work, you should substitute your sandpaper.
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Why I HATE my random orbital sander (and how to fix it)



How much should random orbital sander spin?

A correct pace is about 1-inch per second. When you first try it, that speed will seem SO SLOW!
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Does an orbital sander spin or vibrate?

An orbital sander vibrates in tiny circles and is great for finish sanding. A random orbit sander rotates while vibrating, resulting in a much more aggressive cutting tool.
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What are some downfalls of using a random orbital sander?

Cons
  • More expensive to buy and operate.
  • Sanding discs sometimes hard to find.
  • Aggressive power can damage a workpiece.
  • Hook and loop on pad can become dirty and fail to hold disc.
  • Sanding pad can become damaged – may affect sanding quality.
  • Circular pads prevent working in corners/tight spaces.
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Does an orbital sander leave swirl marks?

A random orbital sander can leave swirl marks due to poor quality sandpaper, improper technique, or an inability to clear the dust from the surface.
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What to check before using a orbital sander?

Always wear eye protection and a sanding mask. Make sure that the tool is switched off or disconnected from the power supply before you attach the sandpaper. The item you're sanding should be properly secured before you begin. Ensure you have a firm grip on the handle of the sander before turning it on.
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Why does my sandpaper keep flying off my orbital sander?

Orbital sanding pads won't stick if debris or tears in material are present. To replace the hook and loop / Velcro pad: Simply remove the three screws on bottom of sander to replace pad.
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Should you use an orbital sander on wood?

Is an Orbital Sander Good for Wood? Yes, orbital sanders can effectively sand wood. However, you should keep in mind that regular orbital sanders can leave circular marks on wood surfaces.
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Why do my hands feel weird after sanding?

Maybe you've used a power sander to refinish the floors in your home. After each of these activities, you might have experienced tingling and numbness in your fingers, hands, and lower arms. That's caused by exposure to the vibration of the power tool you were using.
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Why do my hands hurt after sanding?

The vibrating handles of power equipment can result in numbness and tingling in your hands, particularly after you having been firmly gripping the power tool for an hour or more. Long exposure to vibrations can damage the nerves in your hand in the same way a repetitive motion injury can cause carpel tunnel syndrome.
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What is the difference between an orbital sander and a random orbital sander?

What is the difference between an orbital sander and a random orbital sander? An orbital sander moves only in a circular motion while the random orbital sander also moves back and forth. As a result of the two separate motions, it leaves less of a swirl pattern on the wood.
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How fast does orbital sander spin?

How fast does an orbital sander spin? Most orbital sanders spin at 12,000 OPM (oscillations per minute.) Variable speed orbital sanders have slower speeds that range between 8,000 and 12,000 OPM as well.
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Is an orbital sander better than a palm sander?

As compared to a palm sander, orbital sanders are more massive tools, which means that palm sanders are smaller and more lightweight. The motions of orbitals are Circular and orbiting, and palm sanders only have orbiting motion. If you want to work with larger pieces, orbital sanders are better than palm sander.
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How do I know when to stop sanding?

So what's the right amount? The best way to know when you're done sanding is to scribble a light pencil line across your wood before you start. Once the line is gone, move up to the next grit. Repeat up to the highest grit sandpaper, then wet your wood with mineral spirits to confirm there are no remaining marks.
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Why does some sandpaper have holes?

These holes help to pull dust away from the sandpaper's surface so it doesn't become clogged with sanding debris. Without the holes, the dust would gunk up on the sandpaper surface which would create a layer between what you are sanding and the abrasives, causing it to not effectively work.
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