1,950 Cubic Inch Backpack Page 2
Cut 2 pieces of 3/4" webbing 21"(18") long. Sew on both sides of front as shown. Add small loops made of 3" long pieces of 1/2" webbing (5 on each side spaced 4" apart). Sew the 12" X 3/4" compression straps at the same time. Sew the lacing loops and compression straps
Sew the 1" X 16" webbing roll top closure straps. Sew the roll top closure straps in place
Fold the pack in half inside out and sew the side seams with a 3/4" seam allowance. Finish with a flat-fell seam. It gets difficult to sew the flat -fell seam inside the pack but you only need to sew down within 3-1/2" from the bottom. Fold the pack in half inside out and sew the side seams with a 3/4" seam allowance
With the pack inside out mark the bottom corners as shown to 7". Make sure to line up the center line of the bottom with the side seam (pin it if necessary). With the pack inside out mark the bottom corners
Mark an 8" radius tangent to the 7" line and the front of the pack. Mark an 8" radius tangent to the 7" line and the front of the pack.
Sew along the line. Sew along the line.
Trim to 3/4". Finish the seam by folding each side inward and sew along the edge. Trim to 3/4". Finish the seam by folding each side inward and sew along the edge.
Hem the top of the pack with a 1" hem. Sew the female half of two side release buckles to a 21" piece of 1" webbing and sew to the top of the pack. Hem the top of the pack with a 1" hem. Sew the female half of two side release buckles to a 21" piece of 1" webbing and sew to the top of the pack.
I use a piece of a corrigated plastic for the frame sheet. It is sometimes called Cor-Plast but it also goes by other names as well. It is light and inexpensive. I lighten it by cutting as shown here. It is a good idea to cover the ends with a little tape to reduce wear. I also use a sheet of 1/4" closed cell foam as padding. I use a piece of a corrigated plastic for the frame sheet.

Hip Belt.
Cut two pieces of heavy fabric 5" X 25" (check your hip measurement to see if this needs to be changed). Sew together right side to right side. Leave the ends open.

Cut two pieces of heavy fabric 5" X 25" Sew together right side to right side.
Turn right sides out, fold seams inward and sew 1-1/2 webbing in place (check your hip size for the length). Sew a seam around the perimeter about 1/4" from the edge. Sew the hip belt adjusters in place. Sew velcro to match the hip belt pocket. Turn right sides out, fold seams inward and sew 1-1/2  and 1" hipbelt adjusters webbing in place
Finished Finished pack front
  Finished pack side