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Why Does the Unosand System Work so Well? |
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Unosanding strips have a special gluing system connecting the abrasive fingers directly to the plastic socket of the brush (outside the keyway) and not directly to the brush.
The brush is fully flexible to the base permitting the user to exert the correct sanding pressure to complete any task successfully. |
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A wide choice of brush heights from 22mm to 87mm lets the operator select the correct brush for the application. In choosing the correct brush height the stiffness/softness will vary only according to the applied pressure onto the component being finished. |
By determining the overall diameter of the complete sanding unit and then selecting the most suitable rotation speed, optimum results can be readily achieved.
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The abrasive fingers are available in different widths from 3mm, 4mm, 7mm, 20mm and solid (00mm). A minimum of two different width strips within any sanding hub are usually deployed allowing the abrasive fingers to reach the more complicated areas requiring treatment. |
The abrasive fingers or strips are rounded at the contact point and
approximately 5mm longer than the supporting Tampico brush.
This situation guarantees the maximum contact with the component. Remember you cannot get a square peg into a round hole.
As a consequence greater pressure can be applied by the sanding brush, spindle speed (rpm) can be reduced in the machine, optimising performance and extending the lifetime of the sanding strips, which in turn reduces power consumption and downtime changing abrasives.
Considerable savings in manpower and paint/lacquer can be achieved. |
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When extra pressure is needed for reaching into deep moulds or when aggressively sanding flat areas additional support brushes can be used. These are typically 10mm shorter than the sanding strip and can be soft e.g. S32L or hard e.g. S32H depending upon application. By maintaining constant high sanding pressure and low spindle speed, with the correct abrasive grit size and blade dimension, components are copy sanded only. |
With whitewood or intermediate sanding, there is only marginal arrassing or softening to sharp edges which is necessary to prevent the lacquer/paint from being subsequently eroded when denibbing. Fibres are cut flat. The finished surface is therefore more even and less prone to irregular absorption of finishes and stains, guaranteeing a superior finish.
Low spindle speed, with high pressure and wider sanding blades, perhaps 7mm and 20mm, will sand more evenly on flat surfaces and not ‘pluck’ the softer elements of the grain. This is especially relevant on open grained timber species such as pine. (See applications and examples). |
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