Final attachment of the back panel
You are now ready to continue to secure the back panel to the wood
frame. The back panel, which is made of denim, should end up with an
exposure of about 5 inches from the bottom of the wood frame to the
end of the denim. This can be done by eye, starting at the center and
working out to the ends, but stopping about 6 inches from the ends to
allow room to finish off the corners.
Finishing the back corners
At this point, you are ready to finish the back corners. Begin by
removing any excess cotton in the back corner up to the edge of the edge
wire on the spring. (Photo N) Next, the end of the edge welt must be
pulled around the corner, back and up, and then attached with a hog
ring to the top edge of the spring.
This will begin to clean up this part of the corner, where several pieces
have come together. (Photo O) You may have to release some of the
denim staples and remove some more cotton to access the top of the
spring to hog ring it. After attaching the hog ring to the welt, finish
stapling the side panel flap to the frame. (Photo P) Then put the denim
over this and staple to frame. This will finish off the back corner, except
for one final finishing detail.