I was impressed by Vics tall skinny AIRTRACK 4.5m sail a few weekends ago so when sn dropped a bundle of monofilm and dacron on the doorstep O thought Id better have a go at something.

the sail i started with is and ezzy 5.6.
whtever you think of ezzy's as windsurfer sails I gotta say they are tough.
I had to cut the battens out of this one with a cutting disk in the grinder
thats a first for me.
I was looking for a tall flat rear panel with the roach falling backwards like this


the bar on the sail represents the FIRST cutting line . once marked I cut the sail about 50-75mm into the waste part of the sail as it will change shape once cut. after cutting out the rear panel I layed it back on the floor and remarked the cut line. I have the luxury of having the space to draw full size profiles on the shed floor for reference throughout the process .
this allows you to check each step to make sure it fits and to make subtle changes to the next sail


in these 2 images you can see how the original cut changed its line afterthe first cut. now i restretch it on the floor,redraw and recut. Im trying to create a completely flat panel witha very straight leading edge. note that the battens are almost perpendicular to the trailing edge of the sail

here you can see how the trailing edge will vary when compared to my other cl5 sails(the red line)