Compost sifter almost finished, currently testing
8.5ft long drum
Total length 9.5ft
12) 3/4"x10' EMT Conduit $43
4) 1/8" x 1.5"x 96" Flat rod $18
4) 1/8" x 1"x 96" Flat rod $12
120) Tek Screws 14 x 3/4" $7
1) Plywood 4' x 8' x 15/32" $20
HDPE 20mil plastic, 60 sqft. $30
Used hole saw, 1.5" dia $5
Wire mesh 1/8" x .14", 4ft x 12ft $210
Aluminium Flashing, 12ft x 1ft cut in half lengthwise $10
Total Cost $355
the other material were found or all ready had
55gal drum
heavy duty drill
Bike frame
Bike parts for bearings and chain drive
55 gal steel drum cut into rings
attached rings to main axel sleeves with 3/4" conduit
The "Wheels" are connected together with 1/8" flat rod to make a sifting drum 8.5ft long.
Aluminium flashing strips added on the ends, this helps to move the material into and out of the sifter.
Drill with chain drive and dimmer switch speed control
Output side
Input side
Steel screen with 1/8" mesh, the screens were by far the most important part I bought
Ye olde Drill
11t cog welded to 1.5" hole saw with a 3/8" shank
11t cog drives 44t chainring, 1:4 reduction... something like 1:10 would be better, more torque is more better
Sifting woodchip compost,
lots of worm castings
Discharged material
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