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Abrasive and sandpaper buying guide

Guide written by:
Pauline, Self-taught handyman, Leeds

Pauline, Self-taught handyman, Leeds

80 guides

Whether it’s a creative leisure project like customizing a piece of furniture or simply repainting your shutters, hand sanding is an art that a DIYer needs to have at their fingertips. Get your hands on some sandpaper and get started, just watch out for blisters.

Important features

  • Corundum
  • Emery
  • Flint
  • Granulometry
  • Support

What are the different types and grains of abrasives?

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Abrasives such as sandpaper all fight the same fight, they are most commonly found in sheets or rolls and are used to scour a work surface. The specific use helps to determines the grain size (number of grains) you will need, coarse, medium, and fine grit sandpaper is widely available but it also possible to find extra-coarse or micro-grit sandpaper in very fine, extra-fine, super fine and even ultra-fine.

The number designations used with sandpaper correspond inversely with the coarseness of the grit, the larger the number finer the grain. For shaping or removing material, we opt for 80 or below. Beyond 400, you can easily smooth and polish even the most delicate materials and finishes.

Type of abrasive

 There are 3 main types of abrasive and we present them to you.

Corundum paper

Crystallized alumina oxide is used to sand hardwoods and remove old paint. It should have no trouble removing paints, varnishes, and other finishes.

There is also synthetic corundum which are more resistant and designed for the hard-working sanding.



Emery cloth

Mixtures of minerals fixed on canvas for the sanding and polishing of metals. Emery cloth is good against rust in particular. Suitable for intensive use.



Flint

Flint and other materials such as crushed glass are difficult to find and have been largely replaced by other materials. If you happen to come across it, it will still be called "sandpaper" and is ideal for sanding varnishes, softwoods, or plaster.


Mounting Type

The abrasive grains are bonded to different substrates. We’ll explain.

Nylon fiber

It can be found on the self-gripping sheets for sanding blocks .

Canvas

The abrasive cloth is ideal for corners and reliefs because it is more resistant to bending and shaping.

Paper

The firmer the paper is the faster the sanding will go. However, paper that is too thick or rigid can crack while paper that is too thin tears and is less effective. It is used dry on new wood for easy sanding or to remove the paint from the holds of boats or wet to roughen the paint on the cars.

Work by hand or with a sanding block?

Sanding by hand requires patience and good technique, it can be practiced on flat or irregular surfaces

The sheet of abrasive paper is not always easy to keep in hand. Think of folding it in thirds or quarters to give you something to hold on to and simply switch to a new section as each begins to wear.

For better precision and long-term use, purchase a sanding block. These are blocks of wood, cork, foam, rubber, or synthetic material to which you can secure the sandpaper. They offer an easier grip and better leverage but should only be used on flat surfaces as irregular surfaces will begin to wear the surface of the block. If this happens, a good old sheet of abrasive paper will save you.

Depending on how often and how much you will be sanding, you should consider wearing  protective eyewear or masks.

How to properly use abrasive or sandpaper

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  1. Use gloves to protect your hands.
  2. Sand the wood in the direction of the grain to avoid unsightly scratches.
  3. Start with the lowest grit and progress through your various grits until you finish with a finest grit.
  4. Remove the dust with a vacuum cleaner for dry sanding with a sponge for sanding with water .



Today, auto-body sandpaper can also be used in dry sanding.


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Guide written by:

Pauline, Self-taught handyman, Leeds 80 guides écrits

Pauline, Self-taught handyman, Leeds

I'm a dog trainer by profession, but every weekend I put the whistle down and pick up a tool. The trainer mindset is not so easy to set aside - whether with four-legged or two-legged friends, I love giving advice!

I've been a huge DIY enthusiast for as long as I can remember. I grew up in a house where the whir of the sander was the soundtrack to my weekends - not very relaxing, but always satisfying! DIY challenges our brains as well as our brawn. I've worked hard to teach myself the basics of DIY, decorating and customising furniture. That said, I love what I do. DIY is a way of life, and the tools you learn aren't just the ones you can hold in your hands.

I'm as passionate about animals as I am about DIY, and it's my goal to pass that passion on to others. I know that for some, understanding animal behaviour is as much of a puzzle as figuring out which tool is best for the job. That's why I offer guidance to pet owners specifically - because home is where the heart is for humans and animals alike!

So now that I've introduced myself, it's time to do some DIY - dog or cat sidekick optional!

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