Element and method for providing dismantling groove

Method for providing a dismantling groove in a first element for a product to be assembled so as to include a plurality of elements that are locked by a locking arrangement including a flexible tongue, the method comprising:

• providing the first element, which has a first side and an opposing second side;
• providing an insertion groove in the first element, which insertion groove extends along the first element between the first side and the second side and is configured for receiving the flexible tongue of the locking arrangement for locking the first element to a second element having a tongue groove;
• and
• providing a dismantling groove in the first element, which dismantling groove extends from the first side to the insertion groove and along a portion of the insertion groove, and is configured to receive a dismantling tool for dismantling the first element from the second element;
• the providing of the insertion groove and the providing of the dismantling groove comprising milling with a single milling tool having a first cutting surface for milling the insertion groove and having a second cutting surface for milling the dismantling groove, wherein the milling of the insertion groove is carried out with the milling tool in a first position with respect to a radial direction that is radial relative to a longitudinal axis of the milling tool, and wherein the milling of the dismantling groove is carried out by moving the milling tool to a second position spaced in the radial direction from the first position.