It's not that difficult to build a rolling sieve. In addition to a wheelbarrow, you will need wooden slats, a mesh screen and some manual skills to build it.
How do I build a compost rolling sieve myself?
Building a compost rolling sieve yourself requires a wheelbarrow, wooden slats, bicycle rims, expanded metal and castors. First build a base frame and a screening drum frame before attaching the screening device with expanded metal and rollers and placing it on the wheelbarrow.
The base frame
Material required:
- two slats measuring 1.8 cm high x 5 cm wide x 100 cm long
- four slats measuring 1.8 cm high x 5 cm wide x 40 cm long
- Countersunk screws
- a wheelbarrow
The slats are used to create a rectangular frame that is placed over the wheelbarrow. The two longer wooden slats will later be placed on the wheelbarrow. Two of the four 40 cm long slats are placed on top of each other and screwed together. They serve as a support surface for the two 100 cm long wooden slats. To prevent the frame from slipping up and down, the slats must protrude beyond the wheelbarrow and be screwed to the shorter slats at the top and bottom ends. The shorter slats are screwed to the long wooden slats from below at a 45 degree angle, creating a frame structure.
The sieve drum frame
Material required:
- two bicycle rims
- four wooden slats measuring 1.8 cm x 5 cm x 100 cm
- Countersunk screws
The frame for the screening drum consists of four wooden slats that are attached to the bicycle rims. The aim is to create a cylinder that is bordered at the top and bottom by the rims. Attach the wooden slats to the outside of the rims. Use the spoke holes to attach the slats with the countersunk screws. Distribute the wooden slats evenly so that two slats are opposite each other on the rims.
The sieve device
Material required:
- Expanded metal, 2 meters x 1 meter
- Cable ties
- four casters that fit into the rims
- Countersunk screws
Place the expanded metal around the drum frame and connect the grille to the slats and rims with cable ties. The four rollers are screwed onto the wooden frame for the wheelbarrow so that the screening drum can be placed on the rollers.
The company
The drum sieve is filled with compost and turned by hand. The fine material falls through the mesh openings into the wheelbarrow, while coarse particles slide through the slope over the screen and fall into a collection bucket at the bottom of the wheelbarrow.
