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Woodworking

Top Things to Avoid When Sanding

STEPS

7

SKILL LEVEL

Follow our guide to avoid the most common mistakes people make when sanding. From understanding RPM (rotations per minute) to following the grain with your sanding tool, we've rounded up sanding's best tips. Learn what to avoid before you begin, and you'll have smooth surfaces in no time!

by Dremel ®

224 PROJECTS

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Supplies Needed For This Project

TOOL

3000 Variable Speed Rotary Tool

Model # 3000

ACCESSORY

Dremel 407 Sanding Band

Model # 407

ACCESSORY

EZ Drum™ Mandrel

Model # EZ407SA

Materials

  • 1

    Dust Mask
  • 1

    Safety Goggles
  • 2

    Gloves

Let's Get Started

To reduce the risk of injury user must read instruction manuals for all tools used in this project. Wear eye and respiratory protection. Use clamps to support work piece whenever practical.

STEP 1

Safety First, Get Ventilation And Protection Equipment

While you may think a little dust can't hurt, sawdust in fact is harmful if inhaled. Ventilation is especially important when it comes to sanding surfaces that have been painted since paint particles are toxic. Harmful particles are also released when sanding metal and fiberglass. Do your sanding outside, or in an area with large windows. If neither option is available, then using a vacuum cleaner to suck up the sawdust and wood chips will also work. And most importantly: to avoid breathing in dust or getting it in your eyes, always wear a dust mask and safety goggles. Be sure to wear gloves to protect your hands.

STEP 2

Test Your Sanding Skills

To avoid damaging the surface or removing too much material, always test it first. Every sanding tool, or Dremel sanding accessory, is different - some are harsher than others. See our beginner's guide to sanding for more information on sanding accessories. Also, experiment with different RPMs (rotations per minute). Get a few scrap pieces of the material you'll be sanding, and see what a low RPM does compare to a high RPM. The same goes for pressure.

STEP 3

Choose the Right RPM For Your Dremel Multi-Tool

Every Dremel Multi-Tool has a setting for RPM: rotations per minute. With a high RPM you might remove too much material or even create burn marks. To avoid potential mishaps, always begin with a lower RPM and test on scrap material. Take notice of the material too. Harder materials can handle a faster speed, while softer materials might need a lower one. Plastic could even melt, when the RPM is set too high and the material gets hot. It's a good idea to get into the habit of turning the sanding tool on first to check the desired RPM, before touching it to the surface.

STEP 4

Let the Tool Do the Work

Avoid creating dents or gauges in your work by maintaining a light, even pressure. For flat surfaces, use long, consistent strokes. Go over the surface more times rather than attempting to do it all in one go. Holding the sanding tool with two hands in a golf grip, and taking your cues from the sanding equipment itself, will result in the best finish. If letting the tool do the work doesn't feel natural, it could be that the grit of your accessory is worn down. In that case, replace it. When you have the correct accessory in good condition, you should be able to let the tool guide you.

STEP 5

Choose the Right Sandpaper Grit for Each Job

Expect to cycle through a number of different accessories with every sanding project. It's rare that a project will require just one. If you're sanding an old window, use an accessory with low grit, such as a sanding band, to remove old paint. Then move onto a sanding disc to smooth the surface. A higher-grit abrasive buff is perfect for giving a final smoothing to detailed projects, such as the legs of a baroque chair.

STEP 6

Go With the Grain When Sanding Wood

The naturally occurring lines and rings you can see when you look at a piece of cut wood are known as the grain. When you start sanding, it's important to move the tool in the same direction as the grain. If you sand against it - especially with coarse sandpaper - you may cause splinters or chips. Even if you don't cause larger cross-grain tears, sanding against the grain can still create scratches. These scratches become more obvious after painting or varnishing. When sanding wood, ensure the smoothest result by keeping in line with the grain.

STEP 7

Keep your Sanding Equipment Fresh

If you've ever sanded wood by hand with sandpaper, you'll know that it eventually wears out. The same applies to the accessories of a rotary tool like the Dremel Multi-Tool. To ensure you get the best results, replace the Dremel sanding accessories in good time. If you're planning on doing a lot of sanding, try the Dremel EZ SpeedClic system. The sanding mandrel is a handy accessory that allows you to easily switch sanding bands. Always place the sanding band over the rubber part of the mandrel. If it shifts back a little, the rubber can melt, making the mandrel unusable.

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