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Abrasive Wheels for Rough Wood

Nature offers a wide range of wood types, which hinders the smooth cycling of non-varnished profiles and frames made of rough wood .

Our thirty-year experience has given us the chance to plan and develop a category of abrasive wheels hard enough to be used on any type of wood with a high performance and finishing level.

These abrasive wheels share quite the same construction features, even though each wheel , owns a specific field of application. For this reason,  before describing them in detail, it is necessary to go through some general considerations:

  1. wheels and abrasive paper sheets have an abrasive grit that must not be equalised; as an indication, within the same type of sanding, an abrasive 100 grit wheel corresponds to an abrasive 150 grit cloth or paper (each abrasive wheel shows a specific grit level: by increasing its grit level up to 50%, it’s possible to find the corresponding grit of the abrasive cloth or paper).
  2. To achieve good results by using a machine equipped exclusively with wheel groups, it’s recommendable to use at least two wheels on the same segment’s profile, the first one to rough out and the second one to finish. However, the use of a single grit does not rule out the possibility to achieve extremely positive results.
  3. The wood hardness and the abrasive grit are factors that should be considered when selecting the granulometry of the abrasive wheel: the greater is the wood hardness, the thicker will be the abrasive grit ( 40-60-80 grit: woods such as oak, beech, etc.; 100-120-180 grit: woods such as pine, spruce, douglas, ramin, meranti, etc.).
  4. The moulding process, i.e. the manufacturing cycle through which the wheel gradually takes the required shape ,  shows some difficulties connected with its firmness.  However, this has a positive  outcome: once the desired shape is created, it will last up until  its complete usage.

LG Wheel:  covers all types of wood; however, the customer should consider what has been said on point C of this notice. This is a basic wheel suitable for profiles’ sanding cycles  that provides a high level of performance. The high-quality standard of the grit and binder used to produce it, ensures a satisfactory finish without alterations of the wood fibre and natural colour.

LG … M – LG … MM Wheels: Although deriving from LG category, these abrasive wheels are slightly softer whilst guaranteeing the same sanding and finishing characteristics. These particular abrasive types play a primary role within the sanding cycle: they ensure a perfect “burn-effect free” result. They can be installed on machines characterized by a low ratio between feed and rotation speed of the wheel (LG … M wheels : wheel rotation speed 1.400 rpm and feed speed 15 – 20 m/min; or LG … MM wheels: wheel rotation speed 1.400 rpm and feed speed 10 – 25 m/min.).

Due to special needs, the feed speed  can be further reduced (below 10 m/min.); in this particular case it will be necessary to modify the wheel’s speed,  taking into account that in order to achieve an acceptable result the speed must not fall below 800-900 rpm.

LGR wheel: a  particular wheel type characterized by a high aggression level for which special hard grit and shearing resistance are needed.  It is mainly used  for work on very hard woods or woods with serious  moulding deficiencies.