When sanding in line with moulders or with other machines processing narrow work-pieces we have to consider the wearing of the sanding belt and also that of the feed belt of the rubber cylinders and of the pads , since they are always working in the same position.
We can overcome this problem by applying a “wide oscillation to the sanding belts” (but this only take care of the sanding belt consumption, image on the right) or we can “oscillate the complete machine”, and in this second case we take care of all wears (rubber belts, cylinder, sanding belts, image on the left)