The feed rollers pull the material towards the knives and are controlled by the operation bar or stress control. This require sharp-edged teeth or edges on the feed rollers in order to grip and hold tight to the wood.
In the park series the teeth are made of spring steel which ensures long lifespan and at the same time can be sharpened once or twice with an angle grinder.
In the forest series the teeth are made of Hardox 400
