This small greenhouse can be
constructed over the course of a couple of weekends and is
perfect for extending your growing season into the cooler
months of the year.
 Use a saber saw or circular saw to construct the
front, back, and two angled sides out of plywood. Make the
front 9-x-48-inches, the back 15-x-48-inches, and the two
sides 48-inches-long with a slope from 15 to 9 inches wide.
 Using an 18 gauge perforated steel angle, join the
side pieces to the front and back pieces with the angled cut
facing upwards. To attach the angles to the plywood, use ¼
inch hex bolts. Between the head of each bolt and the
plywood, always use a washer.
 Now you need to make the frame for the lid. Cut
two 8 foot clear pine 1x3s into four pieces. Two will be 46
½ inches; the other two will be 47 ½ inches. With 4 inch
steel L-brackets on the underside, join the pieces together.
Flip the lid frame over and cut triangles from ¼ inch
exterior plywood scraps - using four ¾ inch long No. 8 wood
screws in each brace, attach the cut triangles to the top
side of the lid frame.
 Use three 3 ½ inch hinges to hinge the lid to the
box. Using ¾ inch long No. 8 wood screws, attach the hinges
to the underside of the lid frame first. Then place the lid
frame on top of the box and mark the drilling location for ¼
inch holes on the back of the box on the outside by using
the hinges. To attach the hinges to the plywood, use ¼ inch
hex bolts and washers between the nuts and plywood.
 The last step is to remove the hinge bolts from
the box and unscrew the hinges from the lid frame. Number
the hinges and mark their location on the wood frame so that
putting everything back together will be relatively simple.
Circle the screw holes in the lid frame with a bold marker
to mark their location as well.
 Wrap the lid frame with one piece of 6-mil poly
plastic sheeting and attach with a staple gun or roofing
nails.
 Put the newly covered lid on top of the box and
attach the hinges again with bolts. |
