American Sanders American 8 Drum Sanders - Manual (Page 27)

Clarke ® American Sanders American 8 Floor Sander Operator's Manual Page 27
Chatter - Wave Prevention
Clarke American Sanders are designed and manufactured to the most rigid tolerances. However, after a finishing cut it is possible to
see “chatter” or “waves”.
The best guarantee to remove the chatter is to finish the floor with a
rotating horizontal sander, such as Clarke American Sanders’s Sander 16.
To minimize chatter when using a belt or drum sander the following steps should be taken:
1) DRUM PAPER...insure the paper is secured in the slot, but not too tight. Paper that
is too tight will force the drum slot wider, leaving a “slot mark chatter” on the floor.
2) DRUM MARKS........are caused by the operator lowering the drum to the floor without forward traverse. These marks
should be removed by cutting at a 45 degree angle to the mark. Cutting
at the mark while maintaining the same path will only increase the mark depth and width.