The ridge moulding has a new name: V-ledge
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Preparing the burr moulding with the right milling head
Frequently asked questions - FAQ
What is a ridge moulding?
A moulding supports the wooden panel against warping. These are mouldings, profiles or "wooden slats" that are milled into the top and screwed onto it. In the past, table tops were manufactured exactly according to carpentry specifications. The correct plank widths, mirror-inverted gluing and the right choice of individual planks were crucial, along with many other requirements.
Nowadays, appearance has become much more important, as has correct processing. The planks should be as wide as possible and the surface should be beautifully homogeneous. Of course, this comes at the expense of correct production. And this is where the ridge moulding comes into play. The principle is: "Wood always works". Due to the visual appearance, it is not always possible to pay attention to the correct processing, in order to support the table top against warping or becoming crooked, burr mouldings are installed in the table top.
What types of burr mouldings are there?
Every wood technician favours a different system, and it also depends on the type and thickness of the wooden board. For thin boards of 19 mm, wooden strips are often used for support. For thicker boards, such as 40mm thick, metal flashings are usually used in various designs such as T-profiles, U-profiles, square tubes etc. It is important that no simple flat steel is used, as this is simply bent by the working wood.
When is a burr moulding necessary?
The question of when a burr moulding is necessary arises in particular when processing wooden worktops. A moulding is required to ensure the stability and shape of a table top, especially for solid wood tops that are subject to heavy use. Wood absorbs and releases moisture, which can lead to deformation. This process is exacerbated by external influences such as temperature changes or underfloor heating.
A metal burr moulding is used in particular when thicker solid wood panels are involved, as the material is particularly susceptible to deformation due to its size and the small number of planks. The larger the panel and the fewer the planks, the more important it is to use a burr moulding to keep the wood stable.
For thinner boards, such as 19 mm, an attached burr moulding, usually made of wood, is often used. This also ensures that the board retains its shape and does not warp. In all cases, the ridge strip helps to protect the board against the working of the wood by balancing the forces and stabilising the structure. Particularly with large and heavy boards, the use of a metal flash moulding is essential to prevent permanent deformation.
