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Lid for a Three Bin Compost System (Optional)

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If you are composting kitchen food scraps in your three-bin system, we recommend these rodent-resistant lids for each section of your bin.

Supplies
materials
tools 

Construction Instructions
build lid frame
attach hardware cloth and assemble lid frames
attach lids to the three bin system

ALSO SEE:
outdoor composting
indoor composting
other ways to recycle food scraps
using your compost 
3-Bin Composting System 


image: hardware clothMaterials

  • six 12' cedar 1x4s
  • 8' of 36” wide 1/2” hardware cloth
  • 1/2 lb of poultry staples
  • 1/2 lb. of 1 1/2” screws
  • nine 3” butt hinges or tee hinges
  • six hook and eye latches
  • twelve L-brackets or corner irons

Tips for using materials:

  • Each lid is 33 inches square. Materials listed are enough to build three lids.

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image: c clampTools

  • handsaw or circular power saw
  • drill/driver with 1/2” and 1/8” bits
  • hammer
  • tin snips
  • 3/4" socket or open ended wrench
  • tape measure
  • pencil
  • carpenter's square
    safety glasses, ear protection, and dust mask
  • Tools
  • c clamps

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Build Lid Frameimage: build a frame

Use the following materials:

  • six 12’ 1x4s
  • twelve L-brackets

Instructions:

  • Cut twelve 33” cedar 1x4s. 
  • Cut twelve 26” cedar 1x4s.
  • Butt two 33” boards between two 26” boards to form a rectangle.
  • Check corners with carpenter’s square.
  • Use L-brackets to secure.
  • Make a total of six frames.

 

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Attach Hardware Cloth and Assemble Lid Framesimage: attaching hardwared cloth

Use the following materials:

  • 8’ of 36” wide 1/2” hardware cloth
  • Poultry staples
  • 1 1/2” screws

Instructions:

  • Cut three pieces of 32” x 32” hardware cloth.
  • Stretch hardware cloth across a frame on the side where there are no L-brackets. Attach tightly by hammering poultry staples in every 4" around the edge. Repeat for a total of three frames.
  • Cover the poultry wire staples with the other frames, aligning the frame edges and making sure that the L-brackets are facing out.
  • To provide added strength to the corners, position the top frame so that the corner joints do not overlap with the bottom frame. Use c-clamps to securely hold the two frames together.
  • Pre-drill 4 holes per corner of the top frame for the screws.
  • Keeping the frames square and aligned as you go, use the 1 1/2” screws in the pre-drilled holes to screw the frames together in one corner. Screw the frames together in the corner diagonally across from the first. Screw together the remaining corners.
  • Once the corners are secured, drive screws along the frame spaced at about 6” apart.

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Attach Lids to the Three-Bin System

Use the following materials:

  • Nine 3” butt hinges or tee hinges
  • Six hook and eye latches

Instructions:

  • Attach 3 hinges to each lid. Position the lids over each section of the three bin system. Attach each hinge to the 2x4 at the back of the section.  
  • Attach a hook to the front center edge of each lid and the eye to the bin.

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