In order to provide safe working conditions, the safety equipment constitutes a large portion of a moulder. The workpiece is moved along a secure and precisely adjustable guide, which prevents kickback and other uncontrolled movements. In addition, the rotating planer of a moulder is completely enclosed by a protective housing, which keeps the flying shavings securely out of the surroundings. Throughout machining, the workpiece remains secured by the guide rail. With a correctly adjusted planer moulder, the consistently safe operation is possible. The rotating planer is a dangerous element, and as such is housed deep within the machine. However, on a correctly designed moulding planer, an accidental contact with the planer is impossible. High quality wood moulders have safety switches that stop the planer’s operation as soon as the protective hood is lifted.