Sailmaking: Sewing Machine Works!

My last couple attempts at stitching the center seam on my sail failed because the sewing machine couldn't handle the 4 layers of fabric, plus 4 layers of masking tape, that I was asking it to sew through.  (I hear that Sailrite machines can handle much heavier stuff than our typical household machine, but I'm not sure even one of those would have been able to do what I was asking.)

The two halves of my crabclaw sail,
together again - for the first time.

Looking at the flat-felled seam instructions from that DIY camping gear site I linked to last time, I decided to try the seam in stages as they suggested.  It was harder on me, because the fabric wasn't all locked in place like it was with my masking tape arrangement.  But it was much easier for the machine, and, with help and coaching from my oldest son, who did a sewing unit in 4-H a couple years ago, we got it done.

As for quality, let's just say it will probably be good enough.  While not all of the wrinkles shown at right are sewn into the sail, a few of them are.  I had problems guiding the fabric straight through the machine, which caused some wandering.  I had problems with the two pieces of fabric feeding at different rates, which created wrinkles.  And I probably didn't have everything pinned perfectly to begin with, either.  Here are some examples:

Bunching caused by one side feeding faster than the other,
then being "caught up" too quickly.

Wandering....  The weight of the fabric made feeding
tough, and it sometimes got crooked on me.

If the sail were plywood, these inaccuracies would represent my weakest effort yet.  But it's not plywood, it's cloth, and I've never done anything like this before.  So I'm going to declare victory and move on. 

Moving on....  I think I should reinforce some areas where the wandering was particularly bad.  Then the sail still needs the polypro webbing sewn across the mouth of the claw (probably by machine once more).  And I'd like to add some reinforcement strips to the tack.  Then I need to sew in the polypro bolt rope, which I'll do by hand.  And finally, I need to attach my snazzy red Wharram logo and sail numbers, which I think I'll try to do by hand again.

So there's a bit of work yet before we have a complete sail.  But tonight's progress moves the project forward past a tough stumbling block, which is great news.