Best Sanding Belts for Wood

3×21 Sanding Belts: An elongated strip of abrasive material that is specifically made to fit a powered sanding tool is known as a sanding belt. With its rapid speed and considerable torque, the sandpaper “loop” expedites tasks that would often take a long time. Belt sanders are ideal for removing paint, smoothing off rough surfaces, and generally getting rid of flaws.

The belt sander, which has been a staple in carpentry and building circles for many years, single-handedly revolutionised the way that people deal with wood. Even the most advanced belt sander, though, is only as effective, reliable, and adaptable as the sanding belt it is attached to.

3x21 Sanding Belts

3x21 sanding belts

Various sanding belt types

There are hundreds of different sanding belts on the market now for all kinds of power equipment and tasks. To produce the necessary abrasive action, the vast majority of sanding belts, however, are made of one of the following four materials:

  • Oxide of aluminium

Aluminum oxide sanding belts are appropriate for almost all sanding applications, making them arguably the most versatile of all sanding belt abrasives. Aluminium oxide, which comes in grit sizes ranging from 36 to 400, is excellent for dealing with metals, wood, and other materials.

Zirconia sanding belts are much sharper and more long-lasting than aluminium oxide since they are 100% synthetic and incredibly strong. Zirconia sanding belts, which come in grit sizes ranging from 36 to 120, are frequently utilised with plastics, rubber, fibreglass, as well as all kinds of ferrous and non-ferrous metals.

  • Ceramic

Ceramic abrasives have exceptional long-term performance and, like their equivalents, can be used on both ferrous and non-ferrous metals.

Working with stainless steel is a common application for ceramic sanding belts.

  • Silicon carbide

Silicon carbide is the sharpest and hardest commercially available abrasive, making it perfect for completing the most difficult tasks as soon as possible. Additionally, it comes in a wide variety of grit sizes, ranging from 24 to 600.

The question remains:

Which is the best sanding belt for wood?

sia Abrasives offer a variety of abrasive belts that can be customized to any length of your need. The most commonly used product is the 2920 siawood x available in the 3x 21 sanding belt size among many others. With its robust cloth backing, 2920 siawood is suitable for highly demanding solid wood applications. Let’s see what its advantages are:

• Dust-free method: Dust accumulation on a belt, workpiece, and equipment is minimised by antistatic structure.

• High removal rate while working with coarser grits on softwood and hardwood

• Thanks to TopTec, surfaces are perfect.

• Thanks to its extremely durable backing and improved grit distributing technology, it is suitable for prolonged usage.

How to choose a sanding belt

Checking the specs and needs of your belt sander is the most important step in selecting the proper sanding belt.

If you don’t have access to the manufacturer’s instructions, you may simply measure the length and width of your sander’s present belt by cutting across it. To get the precise shape and size of sanding belt required, input the make and model of your sander online.

The next step is to select a grit that will best meet the job’s requirements.

Belt sanding grit values

Grit values above 600 are considered to be the highest and are associated with smoother surfaces. These work well for finishing polishing but are ineffective for removing paint and varnish.

A grit rating of roughly 40 is ideal for significantly heavier and more aggressive applications at the other end of the scale.

Regardless of the type of material, the vast majority of sanding belt materials will fall under one of the four headings listed below:

  • Extra-coarse sandpaper – This term is usually used to describe sanding belts with a grit rating of 24 to 36, which are excellent for removing the most tenacious paint and lacquer.
  • Coarse sandpaper – While still heavy-duty and slightly less abrasive, coarse sandpaper with a grain of 40 to 50 is suitable for removing the majority of daily paint and varnish.
  • Medium sandpaper is good for the initial smoothing out of rough and uneven hardwood surfaces. It typically has a grit number ranging from 60 to 100.
  • Fine sandpaper, with a grain of 120 to 220, is the type of sandpaper that is most frequently found in toolboxes and workshops at home. incredibly adaptable with a wide range of uses.
  • Extra-fine sandpaper, with grit levels ranging from 240 to 600, is ideal for those crucial finishing touches and a final shine.

It’s vital to keep in mind that you will need to use a number of different sandpaper grits in succession with many (if not most) tasks to get the desired outcome.

Related Products | 3x21 sanding belts

Scroll to Top