• Rough-sawn timber, minimum 3x3cm thickness (1 inch square) in the following lengths:
    • 2x 60cm (2x 23.5 inches)
    • 2x 40cm (2x 16 inches)
  • 1 piece steel mesh, 65cm long and 45cm wide (25.5 x 17.7 inch) with holes 10-12mm square (about 0.4 inches square)
  • Small fencing staples, preferably 10mm (1/3 inch) or less
  • Nails, length at least 1.5 times the thickness of your timber


Step one: Nail the ends of the timber into a rectangular frame as shown in the diagram. Overlap each edge at one end only as shown.

Use three nails on each joint in a triangle. Coated (galvanized) flat-head nails are best for this application.

Step two:   Center the mesh on the frame and use staples to attach.  Use plenty of staples, otherwise dirt may find its way around the mesh.

If the mesh is too large and overlaps then use pliers or wire cutters to trim the edges after you have attached it to the frame.

Helpful tips:

When using the sieve, don''t put to much dirt or compost on at once.  It is easier to place a small shovel full at a time than to try and sift too much material at once.  Either work the material through the sieve with gloved hands or shake sieve backwards and forwards and let material fall through.