Content
Rectangular screens are easier to build yourself
Build yourself a roller screen!
It's not that hard to build a roller screen. In addition to a wheelbarrow you need for building wooden slats, a mesh screen and a little manual skill.
The undercarriage
Required material:
The slats create a rectangular frame that is placed over the wheelbarrow. The two longer wooden slats are later 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. So that the frame does not slip up and down, the slats must protrude beyond the wheelbarrow and be screwed at the top and bottom with the shorter slats. The shorter battens are screwed at 45 degrees from below to the long wooden slats, creating a frame construction.
The screen drum frame
Required material:
The frame for the sieve drum consists of the four wooden slats, which are attached to the bicycle rims. It should create a cylinder that is bounded above and below by the rims. Attach the wooden slats to the outside of the rims. Use the spoke holes to fix the slats with the countersunk screws. Distribute the wooden slats evenly so that two slats lie on the rims.
The sieve device
Required material:
Place the expanded metal around the drum frame and tie the grille to the slats and rims with cable ties. The four rollers are bolted to the wooden frame for the wheelbarrow, so that the screen drum can be placed on the rollers.
The operation
The drum screen is filled with compost and turned by hand. The fine material falls through the mesh holes in the wheelbarrow, while coarse particles slide through the slope over the wire and fall into a collection bucket at the bottom of the wheelbarrow.