Sailmaking detail questions

  • 07 Apr 2013 21:00
    Reply # 1262445 on 1238226
    Deleted user
    Ah, yes, I'd forgotten.  I've done so now.
  • 07 Apr 2013 20:10
    Reply # 1262395 on 1259846
    Deleted user
    Daniel Collins wrote:Wahoo!  Sails are sewn and grommeted now!  More pics when they arrive back at the boat - UPS has them at the moment.

    I used #3 grommets along the head, foot, and at the batten forward ends along the luff.  Webbing straps at the leech end of each batten allow for sheet attachment.  

    Looking forward to getting everything assembled!

    Overall it was about 10 days worth of work working in a living room to cut, sew, and finish the two sails of ~320 ft^2. (~30 m^2).  Total cost was ~$800 in materials, and I used about 85 yards of fabric with enough left over for large patches and other reinforcements or repairs as needed.

    Thanks so much for all the advice and information and I'll keep you posted as this progresses!
    Daniel, David asked if you could please add captions to your images in the Illustrations section of this forum. Perhaps you could do this when you get the next batch of pics?

    For newbies or anyone who doesn't know how to find this forum's illustrations, look in the menu left. They're under the 'Forum - Technical' heading.
  • 04 Apr 2013 18:19
    Reply # 1259846 on 1238226
    Deleted user
    Wahoo!  Sails are sewn and grommeted now!  More pics when they arrive back at the boat - UPS has them at the moment.

    I used #3 grommets along the head, foot, and at the batten forward ends along the luff.  Webbing straps at the leech end of each batten allow for sheet attachment.  

    Looking forward to getting everything assembled!

    Overall it was about 10 days worth of work working in a living room to cut, sew, and finish the two sails of ~320 ft^2. (~30 m^2).  Total cost was ~$800 in materials, and I used about 85 yards of fabric with enough left over for large patches and other reinforcements or repairs as needed.

    Thanks so much for all the advice and information and I'll keep you posted as this progresses!
  • 02 Apr 2013 10:00
    Reply # 1256951 on 1255214
    Deleted user
    Annie Hill wrote:
    Daniel Collins wrote:
    I haven't spread the entire thing out yet (nervous!!! I hope the luff is actually straight!!) but that should happen tomorrow.  Cross your fingers for me!  


    When I made my (cambered, fanned) sail for Fantail, I was horrified when I stretched it out.  The luff looked like a dog's hindleg!!  Used as I was to building flat sails, I couldn't believe it.  Now whether this was as a result of my sewing or of the design I don't know, but I know the panels were accurately cut and carefully sewn.  But once the sail was bent on the problem disappeared.  Soooo if your luff is less than straight Don't Panic!
    I was noticing this phenomenon too. Pre measured to make sure the panels are identical length, but on taping them together there's 2cm overlap. I think I'm stretching the upper panel's fabric while laying it onto the lower panel's basting tape & causing the problem.
    Last modified: 02 Apr 2013 10:02 | Deleted user
  • 01 Apr 2013 22:47
    Reply # 1256541 on 1255773
    David Tyler wrote:The next-to-top panel is close enough to purple to please Annie, I'm hoping :-)
    Closer to magenta, actually (just to maintain my reputation for pedantry), but very cool.  It's really great to see people being creative with the look, as well as the design of their sails!
  • 01 Apr 2013 01:09
    Reply # 1255773 on 1255740
    Daniel Collins wrote:Mainsail photos are now in the "Illustrations" section - enjoy!
    The next-to-top panel is close enough to purple to please Annie, I'm hoping :-)
    Please could you add some captions, Daniel?
  • 01 Apr 2013 00:19
    Reply # 1255740 on 1238226
    Deleted user
    Mainsail photos are now in the "Illustrations" section - enjoy!
  • 01 Apr 2013 00:17
    Reply # 1255738 on 1255240
    Deleted user
    David Tyler wrote:
    Daniel Collins wrote:
    Ok... so that leaves another question:  How do I secure the leech end of the batten pocket?  A doubled-up square patch over each?  
    You might get as many answers to this as there are junk rig sailors, but I've always found that closed pocket ends chafe through from the inside. I like to bolt the batten through a grommet in the sail, so that the aft end is firmly fixed flush with the leech. A 5/16" bolt through a number 2 spurtooth grommet would be about the right size.

    Ok, I'd already done a few of them with a tab over the pocket end (so there are 2 layers of fabric on top, the pocket itself and the tab as a doubler).  The webbing attachment for the sheets goes over that, a la PJR.  There are 5 layers of fabric at the sail on the leech as well so if the pocket ends start to chafe through I can always revert to banging a grommet or two in as a fallback later.  I plan to wrap the batten ends with some padded fabric and duct tape before I stuff them in to hopefully minimize the possibility of chafe, but of course one always has to pay up eventually.

    I'm definitely doing the bolt and grommet at the luff.

    Regarding rounding, I did the lower three panels on each sail as one "unit" similar to Kurt's method of construction - I could fit that much at a time on the floor here.  I rounded the top and bottom of each of those sections, as well as the individual panels stacked above, by 3/4"-1".  It's not a lot, but it does make a noticeable bit of broadseaming effect so that will hopefully do what you mentioned, David, and balance the fabric out without making anything baggy or wrinkled.  I did the best I could to ensure even tension along the seam and pocket lines all along the sail, but you know it's a homemade sail so there are minor imperfections throughout.  I'll upload a picture of the main shortly!
  • 01 Apr 2013 00:11
    Reply # 1255724 on 1255214
    Deleted user
    Annie Hill wrote:
    Daniel Collins wrote:
    I haven't spread the entire thing out yet (nervous!!! I hope the luff is actually straight!!) but that should happen tomorrow.  Cross your fingers for me!  


    When I made my (cambered, fanned) sail for Fantail, I was horrified when I stretched it out.  The luff looked like a dog's hindleg!!  Used as I was to building flat sails, I couldn't believe it.  Now whether this was as a result of my sewing or of the design I don't know, but I know the panels were accurately cut and carefully sewn.  But once the sail was bent on the problem disappeared.  Soooo if your luff is less than straight Don't Panic!


    Whoa!  Great advice!  I was hugely less nervous knowing this.  There's only a very slight "kink" right at the top panel (which, incidentally, has the most rounding) so I figure that's probably related.  The rest of the luff was ruler straight, so that was a relief!

    Working on the foresail now! 50% done thanks to some seriously helpful assistance.
  • 31 Mar 2013 02:27
    Reply # 1255260 on 1255214
    Annie Hill wrote:
    Daniel Collins wrote:
    I haven't spread the entire thing out yet (nervous!!! I hope the luff is actually straight!!) but that should happen tomorrow.  Cross your fingers for me!  


    When I made my (cambered, fanned) sail for Fantail, I was horrified when I stretched it out.  The luff looked like a dog's hindleg!!  Used as I was to building flat sails, I couldn't believe it.  Now whether this was as a result of my sewing or of the design I don't know, but I know the panels were accurately cut and carefully sewn.  But once the sail was bent on the problem disappeared.  Soooo if your luff is less than straight Don't Panic!
    That's right. Any junk sail that has some shape sewn into the panels looks like a total disaster on the loft floor - until the straight battens are set in place, and then it all comes out according to plan
       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
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