Trellis rods, planed from robinia wood

The climbing bars are planed along the sides.

If you choose the "not pointed" version, the bars are not pointed but only beveled at both ends.

If you choose the "pointed" version, the bars are pointed at one end and beveled at the other.

By choosing acacia wood, you are opting for a wonderful product of nature. This is not an artificial, standardized material. Each piece has its individuality, its liveliness through certain irregularities. These only become defects if they impair functionality.

Dimensional tolerances: The specified thickness measurements apply with a tolerance of 0.3 mm (at the time of delivery). Due to drying, the thickness measurements can decrease by up to 6%. The specified length is accurate to within 2 mm.

Quality features: Even, straight-grained wood; at most small, embedded knots in a limited number.

Warping and cracks: Wood is alive because its moisture content – depending on the ambient humidity and climate – affects the dimensions and internal stresses of the wood. Across the grain (radial, tangential), the dimensions can change by up to 6% in practice, while along the grain (axial) the change is very minimal.

Larger internal stresses are released by the wood warping and cracking. This must be taken into account. (Our ancestors, whose main material was wood, did this; we tend to forget it today.)

The above is even more true the harder the wood is; acacia wood is the hardest among woods.

How the wood warps and cracks is not concretely predictable. The drier the wood is, the greater the volume shrinkage and the more and larger the cracks are generally. There can be several cracks, or it can concentrate on just one large crack.

On the other hand, the thickness of the wood is crucial. The thicker the wood is, the greater the volume shrinkage that is "compensated" by the cracks. Starting from wood thicknesses of 6 cm, cracks are unavoidable, no matter how carefully it is dried.

The ambient climate can vary greatly. Unprotected or covered outdoor areas, unheated or heated indoor areas, sunny or shaded sides.

Since we do not know the ambient climate at the place of use, we deliver sawn timber air-dried, i.e., with a wood moisture content of about 20%, no more. Then there will be at most minor cracks – in relation to the thickness (see above). In a shaded place, the wood will hardly dry out further.

Rapid further drying of the wood in the sun or in a protected place amplifies the stresses in the wood. Then the wood can warp and crack far beyond the inevitable extent. If you store the wood, please do so in a shaded, cool place and secured.

Cracks do not impair the strength, load-bearing capacity, and lifespan of the wood.