Frequently Asked Questions

Can the described effects also be achieved on a conventional widebelt sanding machine by placing the workpieces slightly oblique to the feed direction?

No, because on a conventional widebelt sanding machine the sanding unit and the conveyor belt with the workpieces always run in exactly the same direction, hence parallel and in this way irregularities and clogging of the sanding belt are not shifted sidewards, but show up as oblique traces on the workpieces.

Are oblique sanding machines an alternative to cross belt sanders?

Oblique sanding units may be an economical alternative to cross belt sanding units. They are a recommendable up-grade to a cross belt sander if they are positioned at the machines exit and in this way produce a better finish than with the conventional sanding unit.

What were the special challenges for the engineers of the KÜNDIG AG?

Initial work dealt with basic sanding research and the interdependence between abrasives and machinery. For our design engineers, the control of the electronic segmental pad was a big challenge due to the pivoting action of the sanding unit which resulted in a different geometry and increased time delays from the sensor rollers. This difficult task was resolved by a special arrangement of the sensor rollers with the segmental pad along with the integration of new machine control software.

What does experience show?

Today, more and more furniture manufacturers and craftsmen choose oblique sanding machines. This new and innovative process has been widely accepted and with great acclaim from many manufacturers throughout the world, who confirm the superiority of oblique sanding to conventional parallel sanding. Along with all the benefits already mentioned, many customers have also reported that the blemishes caused by irregularities on the sanding pad’s graphite cloth are no longer present.

Which sanding machines can and shall be equipped with oblique sanding units?

All models of KÜNDIG widebelt sanders can be fitted with oblique sanding units. On which position depends on the operation requirements. There are advantages even on single belt sanding machines, which can achieve the quality of surface finish normally only associated with large production companies. In addition, the oblique sanding units can be readily used according to the surface requirements in either the oblique or traditional sanding position.

Are there any preferred machine specifications?

So far, the most popular models are the single belt KÜNDIG Brilliant-1 widebelt sanding machines with oblique sanding head incorporating a contact roller and electronic segmental pad and the twin belt KÜNDIG Brilliant-2 widebelt sanding machine having the same equipment. In addition there are different variants which can include crossbelt sanding units. Also, along with all the afore mentioned benefits and reduced costs when oblique sanding, machines equipped for sanding lacquer i.e. with infinitely variable sanding belt speed, belt blowers and vacuum table, have shown that even the most difficult surfaces can be sanded to give a flawless finish.

How much does an oblique sanding unit cost?

We will be pleased to demonstrate the advantages of the new oblique sanding technique in our permanent showrooms in Wetzikon, Switzerland or at one of our subsidiaries. Why not take one of your “problem workpieces” with you and ask for the advice of our technicians on how to perfectly sand even the most difficult of surfaces.