1 sheet of 1/2" plywood
1 14" utility 2 x 4
1 16' utility 2 x 4
1 lb. 4d galvanized nails
1/4 lb. 16d galvanized nails
3" door hinges
Tape measure, skill saw or
rip hand saw, hammer, saw horses, long straight edge or
chalk snap line, screw driver, chisel, wood glue and drill
with 1/2" bit.
EYE AND EAR PROTECTION
Measure and cut
plywood as indicated in drawing. To make the base, cut the 14' 2 x 4
into five pieces: two 48" and three 20" long. The remaining 12"
piece will be used to make the sides. Nail the 2 x 4s together on
edge with 16d nails at each joint as illustrated in the base frame
diagram. Nail the plywood base piece onto the 2 x 4 frame using the
To build the box,
cut three 12" pieces from 16' 2 x 4. Place a one-foot 2 x 4 under
the end of each side panel so that the 2 x 4 is flush with the top
and side edges of the plywood and nail the boards in place. Nail the
side pieces onto the base frame.
To complete the
box, nail the ends onto the base and sides. To reinforce the box,
place a nail at least every 3 inches wherever plywood and 2 x 4s
meet. Drill twelve 1/2" holes through the bottom of the box for
drainage. Drill two levels of 1/2" holes all around the sides
as illustrated in the pictures above.
To build the lid,
cut the remainder of the 16' 2 x 4 into two 51" lengths and two 27"
pieces. Cut lap joints in the corners, then glue and nail the frame
together. Center the plywood onto the 2 x 4 frame and nail with 4d
nails. Lay the top on the ground with the plywood side touching
ground. Attach hinges to the top and back using short screws on the
top and the long screw on the back. Position hinges so the screws go
through plywood to 2 x 4s.
Coating the inside
with paraffin will help preserve the wood from the moisture
necessary for your worms to thrive. To do that successfully
you will need to heat the paraffin to the point where it sizzles
when you apply it to the wood.
Treat the outside
with clear polyurethane,
varnish, or paint to protect it from weathering.