First post - got to start somewhere
I've seen various methods for sticking together panels on taped seam sails. When I got started with taped seams I was shown a method suited to doing a lot of sails which, if you have the space, makes short work of it. I'm not sure I've ever written it up so here goes:
Get some drafting film, the heavy opaque plastic(?) tracing paper used by architects and draughtsmen. Copy the sail pattern onto a single sheet - I do my templates without seam allowances so I lay out all my templates and draw around to get a full size plan. It ends up about 8ft by 4ft so you need a big table or you could do half a sail maybe.
Next in strategic positions on the film stick down 1" lengths of seam tape. I find 4 or 5 per panel is good, keep them about 1" away from the edge of each panel (because you need to lift the edges). Bainbridge or Venture tape is excellent for this, the 3M stuff is a bit too aggressive IMO.
Now peel all the backing off these strips of tape and roll the palm of your hand over the tape, over and over to take most of the sticky-ness off the tape. You want it to hold icarex in place without actually sticking to it.
(A digression here - some will say you could us spray mount but in my experience its too tacky and grabs too quickly even after using it a lot. Great for stopping your templates slipping when cutting out but a PITA for this
Now stick all your panels on the film until you have a complete sail but don't add the tape between seams yet! Ensure that as you lay out the panels, for each edge, the panel that should finish underneath, is on top to begin with
(hope that makes sense when you read the next para. ).
Now you have a complete sail, minus tape, lay the tape on the uppermost piece of Icky for each seam, stick it down. leaving the backing on, slip a pinky under the panel edge underneath and slip it out and over the panel edge you've just taped.
Now just whip the backing off and rub down the panel edge above and move on to the next seam.
When the whole sail is done just lift it off the film ready to sew.
This really needs photos
but with all the tacking down to the film all the panels stay flat, you don't get any creases or wrinkles and you can blast through laying up sails in no time.
A bit long winded for a single sail but if you make half a dozen of the same kite (B'zar or Le Virus fans?) this method is fast and a piece of cake.