The principle behind it
Reiner Ruggaber

The RUWI welding table top with groove system offers you a robust and versatile work surface made of 4 mm thick, phosphated steel. The 10 mm wide grooves allow you to position clamping devices and stops quickly, variably and without tools. Thanks to the laterally folded sides with integrated groove, you can also clamp workpieces from the side without any problems. A bolted reinforcement cage and welded corners guarantee a stable, permanently flat surface. The groove system is optimally matched to the RUWI quick-release clamps and stop elements.
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