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to bushcraft.

A bushcraft clamp normally used to create extra tiedown points on a tarp was the starting point for this project.

The result is a joint that has the same components as the tarp clip, it can be used for the construction of different furniture.

Clamp connectors, toplevel and midlevel
Furniture conifguraton, sideboard 


The simplicity and usefulness, on the other hand, the extreme power that can be achieved with the clamp excited me immediately when it
was shown to me the first time.

⁎ split a thicker branch in half
⁎ place a thin branch between the halves
⁎ wrap with a string
⁎ sharpen suitable branch as a wedge
⁎ insert wedge when in possition

The goal was to translate the four elements of the clamp into a joint that can be manufactured out of metal with the use of basic machines.
The principle function should remain.


Thanks to my apprenticeship, I am skilled in the use of many machines for metal processing. I was able to use the machines in the company I was trained in when the university was closed due to Covid, which is why not only conventional machines but mainly CNC machines were used for manufacturing.


In order to use the connection for furniture construction, the clamp
was bent 90°, the pivot point remained in the same place. The lower
lip is extended to provide a larger contact surface for the levels, the upper lip has a hook to prevent the clamp from being pulled out.

Old bicycle tubes were used for the rubber parts. The metal parts were burnished. Burnishing is a paint-free surface treatment that acts as a rust preventative.


To test the connectors, I integrated them into a sideboard adapted to my living situation. They have now been put through an endurance test for a little over two years, with moves and frequent assembly and disassembly. From the experience with this configuration, it can be said that higher and more complex shelves are feasible.


The clamping force of the rubber hoses, which clamp the rods retroactively and prevent them from falling out, is strong enough to lift the shelf without any problems at the upper level -nevertheless, the rods can be mounted without any problems thanks to the chamfer on the rod and the inside of the clamp.

The clamp for the middle levels functions in the same way as the one for the upper level, whereby inserting the first rod does not yet build up any tension but merely establishes the ground state of the simple clamp. Here, I see the potential to build up more tension by inserting the second rod in order to increase the overall stability.

Thanh Nguyen
Bernd Preiss (botek)
Randolph Veit (botek)
Hochschule für Gestaltung Schwäbisch Gmünd