The endless rings, flaming veins, dark knots. Every single Sandwichbikes’ frame has its own unique identity. The beech wood we use for Sandwichbikes is carefully selected in a sustainable managed forest in Germany. For the excellent quality of our Beech wooden frame, industrial production and man-made craftsmanship go hand in hand.
Only the best quality is good enough
Trunk inspection is done by specialists who decide whether the trunks complies with the quality requirements. Forked wood, any spiral growth or heartwood formations are not accepted. Only trunks that have grown straight, with a minimum diameter of 35 centimeters are approved. With this excellent wood quality, it was no surprise that our wooden bike past the various tests with flying colors.
After trunk selection, the trees are processed in the Becker factory. First the trunks are peeled into veneer in the peeling machine. Becker: “The best qualities are sorted out of the stack by hand. The human eye is superior to the camera in this regards.”
After peeling, the veneers are pressed and bonded together with adhesion rollers and then treated with a varnish that is breathable and UV-resistant. Finally the bonded veneers are CNC-processed into Sandwichbikes wooden frames.
Sandwichbikes wood is FSC and PEFC certified
A new Sandwichbike comes from German mature wood, since the beech trees are harvested at the age of about 120 years. The forests in Germany have been cultivated sustainably for more than 300 years, meaning no more wood is harvested than can be regrown again.
The Forest Stewardship Council (FSC) is an international, non-governmental organisation dedicated to promoting responsible management of the world’s forests.
PEFC, the Programme for the Endorsement of Forest Certification, is a leading global alliance of national forest certification systems.
Did you know:
- Beech trees, taken in the same dimensions, have only one-tenth the weight of constructional steel, but possess a third of its strength.
- Beech trees provides the best veneer material
- Wood is the world’s most environmentally raw material. Why? Have a look at this video of the Danish Wood Initiative.