Sandpaper rolls
Sandpaper rolls
EXPERTENWISSEN ABZIEHLEDER
Structure and Materials
The abrasive consists of three main components:
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Backing material: This forms the basis of the abrasive paper and influences its flexibility and tear resistance. Common backing materials are:
- Paper: Often used for general sanding work.
- Linen (abrasive cloth): A robust and flexible fabric that is particularly suitable for demanding sanding work.
- Film: A synthetic material that provides a very even surface and is used for precise sanding work.
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Abrasive grains: These are responsible for the actual sanding effect and consist of hard materials such as
- Aluminium oxide: A durable grit, ideal for working on wood and steel.
- Silicon carbide: A very hard grain used for hard materials and fine sanding.
- Zirconium aluminium oxide: A tough grain that is suitable for processing metals and hard woods.
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Binder: It holds the abrasive grains on the backing material and influences the durability of the abrasive paper. Modern sandpapers often use synthetic resin bonds for greater strength and temperature resistance.
Areas of application
Sanding with sandpaper on a roll offers the advantage that it can be customised to fit specific workpieces or Tools. Typical applications are:
- Woodworking: For smoothing surfaces, removing old varnish or preparing for painting.
- Metalworking: For deburring, removing rust or polishing metal surfaces.
- Plastic processing: For smoothing edges and removing mould seams.
There are various products on the market that differ in terms of their properties and areas of application:
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Klingspor abrasive paper: This abrasive paper is characterised by its high removal rate and durability. It is a universal abrasive and is particularly suitable for woodworking and removing old layers of varnish.
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Klingspor abrasive cloth: The abrasive cloth is more flexible than conventional abrasive paper and adapts better to uneven surfaces. It is ideal for working on metal and wood with complex shapes.
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Mirka Gold self-adhesive sandpaper: This self-adhesive sandpaper enables easy attachment to flat sanding blocks or machines. It offers a high removal rate and excellent service life. Available in a width of 70 mm and a length of 41 metres. This 70 mm width is particularly practical for sticking to flat reference surfaces such as stone or glass plates, for dressing cutting edges or for other sanding work. The self-adhesive backing enables easy attachment and residue-free removal.
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Siaspeed Siafast abrasive paper (hook and loop): This abrasive paper offers a high removal rate and a long service life. It is particularly suitable for resinous hardwoods such as ebony, rosewood, etc. Siafast backing for quick and easy attachment to sanding tools equipped with a hook and loop surface.
Choosing the right grain size
Choosing the right grit size for the sanding paper roll depends on the desired removal rate and surface quality:
- Coarse grit (40-60): For fast material removal and the removal of coarse irregularities.
- Medium grit (80-120): For general sanding work and preparing surfaces for painting.
- Fine grit (150-240): For fine sanding and smoothing surfaces.
- Very fine grit (280 and higher): For polishing and final sanding.
Tips for use
- Pressure: Apply even pressure to achieve a uniform sanding pattern and avoid sanding through.
- Movement: Guide the sandpaper in even, overlapping paths to minimise visible sanding marks.
- Cleaning: Remove sanding dust regularly to prevent the paper from clogging and to extend its service life.
Advantages and disadvantages of sandpaper on a roll
Sandpaper on rolls offers several advantages over pre-cut sanding sheets and sanding discs, which are important for both hobby craftsmen and professionals.
1. cost efficiency - favourable price per metre Buying sandpaper in rolls is generally more economical than individual sanding sheets or sanding pads. Due to the larger quantity discount and the lower packaging costs, the price per metre is often significantly lower. This offers significant cost savings, especially for workshops or businesses that regularly require sandpaper.
2. flexible cutting - customisation A major advantage of sandpaper on rolls is the freedom to choose the size: the paper can be cut to size as required - whether for hand sanders, sanding blocks or special machines. This reduces material waste, as only as much paper is used as is actually needed.
Disadvantages of sandpaper on rolls
1. rolls with hook and loop fasteners are rarely available
Many modern orbital sanders use Velcro sanding pads for a quick change.Sanding paper rolls usually do not have a Velcro fastener, which is why they cannot be used directly on machines with Velcro fasteners. This is also due to the fact that the perforation of the paper must match the suction holes of the machine to ensure effective suction.
2. possible wave formation - especially with paper backing
If sanding rolls are not stored correctly, this can lead to waves or creases, which can have a negative effect on the sanding result. Paper-based sandpaper, which absorbs moisture and warps, and very long rolls, which become unevenly tensioned due to incorrect storage, are particularly susceptible.
