Laser cut stainless steel grid
We had a project to produce stainless steel drainage trays for a customer of ours who makes living roofs. The type of roofs that have grass and plants growing across them on schools, bus shelters, nature hides etc. The roofing systems have a series of stainless steel trays laid over the roof with the plants growing and a drainage system to take the water away. The trays have welded corners and a simple gutter / down pipe system to take the rain water away. Inside each roof tray there is a filter system consisting of this stainless steel grid which is welded in place around a drainage hole allowing a filter media to be positioned to hold back the growing media.
The stainless steel grid was laser cut from the same parent sheet as the drainage trays and designed to fit perfectly with small tabs that located into slots in the tray to aid positioning when being welded. We even left more material when we had to bend the grids so there was enough stainless to bend cleanly, this is the advantage of using a laser cutting machine even on small volume projects.