MHM Panels

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The basic material: side-cuttings from the sawmill MHM® walls are manufactured with a specially developed plant, the so-called MHM production line in sawmills or carpentry firms.  Side-cuttings, which are left over from beam manufacturing form the basic material.

The remarkable thing is that what used to be treated as a left-over now has its own value because this side-cutting is the raw material for the MHM® wall. Therefore, this is genuine “upcycling”.

The construction is carried out with the help of 3D CAD software:

Using construction plans drawn up by architects or planers, the MHM manufacturer can produce wall elements CNC controlled from MHM® extremely accurately.  There is no more than +/- 1 mm tolerance. Slants, door and window cut-outs, installation ducts etc. are accurately cut out and/or milled.Computer-controlled manufacturing (CAM) results in a high degree of accuracy in accordance with 3D CAD planning and makes subsequent assembly on the building site easier.

The three stages in the production process:

The production process is divided into three parts: grooving the individual boards, producing the individual wall plates and the so-called joint, which means the final finishing of the wall plate into a ready-to-install element that is accurate to the millimetre.

In the first stage, the dried boards are grooved which later forms a standing layer of air in the finished wall and consequently results in a better insulation value than with pure solid wood. In addition, a 3 mm lateral rabbet joint is milled which ensures that the side fits accurately and adds extra strength. All the boards are random width and are always 24 mm thick.

In the second stage, the “wallmaster” produces raw wall elements from the profiled boards varying in size from 2 m x 2 m to 3.25 m x 6 m and in thicknesses of 11.5 cm to 34 cm, into which the boards are pressed cross-wise (lengthwise and crosswise) and connected with aluminium groove pins layer by layer. Each board intersection is connected with two nails at the largest distance possible to each other (diagonally). This ensures the highest possible degree of stability.

After the pressing stage, the raw wall element is moved to the CNC panel cutting machine standing in line, where the element is formatted in a third stage and the necessary door and window openings are cut.  The drill holes for lifting slings, slots and recesses for heating and sanitary facilities, as well as electrical sockets and other installation preparations are milled into the element by computer-controlled tools.

Sealing and delivery

With the “wood mortar” which we have developed ourselves, consisting of wax, sunflower oil and sawdust all fronts can be coated, if a customer wishes, so all elements are water-repellent during transport and assembly. Furthermore, the wood mortar seals the joints between the individual elements.

After these steps, the MHM® is ready to be delivered to your building site.