Diy Metal Raised Garden Beds . Here is the list of necessary materials and tools to build a metal raised garden bed: How to build a metal raised garden bed. Pin on Metal Garden Beds from www.pinterest.pt This design drains neatly past the wood, so you don't need any landscape fabric. Buy metal planters & raised beds at b&q free standard delivery on orders over £50. Here is the list of necessary materials and tools to build a metal raised garden bed: