Left to right: Crab pot mesh, Builders plastic 4 m wide,

Weed mat 1m wide, C-clips.** **

90mm PVC storm drain pipe, 40 mm PVC conduit pipe,

Duct tape. (Optional: 90 degree PVC bend.)

Marker, Bolt cutter large for mesh, C-clip pliers, Bolt

cutter small to remove failed C-clips, Pair of pliers,

Measuring tape, Long ruler, Chalk, Scissors.** **

Drill with 100mm and 40mm bits, Hacksaw,

Round file and Scissors.

(We buy rolls of mesh, plastic and weed mat, and full lengths of pipes to keep cost down as use a lot of it.)

A length of 5.7m (76 squares) of crab-pot mesh will provide

three small wicking beds 1.2m long and 600mm wide. Two

are 400mm high and one 300mm. The lower bed suits

shallow rooted crops.

The bottom plates are the same for all three beds: 600mm x

1200mm (8 squares along the length of the roll and the full

width of the roll, 24 squares,).

Total length of the walls is the same for all three beds:

3,600mm (2 x 1200+ 2x 600) or 48 squares along the length

of the roll.

The height of the wall differs. A 3,600mm long section of the

roll is cut lengthwise into three parts, two 400mm wide and

one 300mm wide. (2x50mm is lost due to two cuts.)

Beds can be made longer by adding bottom plates together.

The maximum width is determined by that of the weed mat.

The three wicking beds cost us $42 in materials.

A length of 5.1m (68 squares) of crab-pot mesh will provide

four macro-pots of slightly different sizes, to minimise waste

of mesh.

Two have a circumference of 1.875m (25 squares along the

length) but differ in height: 600mm and 550mm (respectively

12 and 11 squares along the width). 50mm (1 square) is lost

due to cutting.

Two have a circumference of 1.725m (23 squares) with the

same difference in heights: 600mm and 550mm. These will fit

the smaller bottom plates.

There are two sizes of bottom plates. Both are 600mm long

(8 squares along the length). One is 600mm wide (12

squares along the width), and one is 550mm wide (11

squares), as one square is lost due to cutting. That gives the

four different pot-sizes (see table below).

The four macro-pots cost us $52 in materials.

Circumference Heigh

1,875mm 550mm 600mm x 600mm

1,725mm 600mm 600mm x550mm

1,725mm 550mm 600mm x550mm

Demonstration site at the Gin Gin (Qld) Landcare nursery and bush-tucker garden