Sew it yourself! San Juan 21 Main Sail Kit lets you make your own mainsail. This crosscut kit is made from 5.4 oz. Supercruise Dacron® using the designer's plans, and features one row of reef points, standard battens, a boltrope on both the luff and foot, leechline, and slugs on the luff.

Computer plotted with seaming lines plotted right on the cloth, this sail kit can be made on a home sewing machine. All panels and patches are computer cut and ready for basting and sewing. Complete instructions and support from Sailrite means there is no guess work!

Construction requires a #1 Spur Die Set for setting grommets, as well as a #6 Eyelet Die Set for setting eyelets. All other supplies to build your sail are included; all you need are scissors and a sewing machine!

Each Sail Kit comes with complete written instructions.

Sail Kit Includes:

  • 5.4oz Supercruise Dacron® Sailcloth, patterned and pre-cut
  • White V-69 Polyester Thread
  • Seamstick Basting Tape
  • #16 Hand Sewing Needle
  • 5-ply Waxed Twine Bobbin
  • Folded Dacron® 1-½-inch Tape (Non-adhesive backed)
  • Folded Dacron® 3-inch Tape (Non-adhesive backed)
  • Classic 3-Strand Polyester Line
  • Leechline
  • Battens with End Caps
  • #1 Spur Grommets
  • 1 inch SS Rings
  • #6 Brass Eyelets
  • Aluminum Headboard with rivets
  • Gransegel Cleats Small
  • Snap-In Plastic Shackles
  • Round Nylon Slugs
  • 1-inch White Elastic
  • Adhesive Sailrite Logo
  • Instructions

Also required (sold separately):

  • #1 Spur Die Set


Luff: 23 feet
Foot: 8 feet, 7 inches
Leech: 24 feet, 4.25 inches
Area: 129 sq. ft.


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