I realized on Monday that my son didn't have a single pair of swim trunks that fits. With swimsuit season (and my due date) nearly upon us, I had to remedy the situation immediately. I had picked up some board short fabric when I ordered swimsuit fabric from The Fabric Fairy a few months ago, and my recent eBay elastic bonanza included 5 yards of 1.25" drawstring elastic. I decided to use the free Sunny Day Shorts pattern from Oliver+S, which I've used before here and here. I was not planning to line the trunks for my diapered boy, so the only adjustment necessary would be in the waistband (my elastic is wider than the 3/4" called for in the pattern).
I stitched the seams on my sewing machine and then finished them with the serger for durability. For looks, I pressed the outseam and the rise seam to one side and then did two rows of stitching for a mock flat-felled seam. I didn't bother adjusting the pattern for a faux fly, but I did stitch a faux fly. Next time I might do the whole shebang. It's hard to tell from the photo, but the topstitching is yellow to match the waistband.
I wasn't entirely sure how to deal with the drawstring elastic (and I really wanted to finish the shorts before nap time was over) so I made it up as I went along. First I sewed the bottom of the waistband to the pants. Then I put two 1/2" buttonholes into the front of the waistband, near the seam. Keeping the elastic in one long piece, I serged one long edge of the elastic to the wrong side of the top edge of the waistband, leaving about a 1.5" elastic-free section in the center front so that the drawstring could pull through. I'm not entirely sure that was the right move - I think I definitely should have left a smaller gap - but I am not sure what else I could have done differently. (If anyone knows, please comment!)
Then I pulled the drawstrings through the buttonholes and knotted them (clearly they need some Fray Check too). I folded the waistband over on itself, covering the inner seam, and then topstitched it in place. The top of the waistband is a bit wonky and I'm not certain what I could have done to prevent that. But it works.
So - microfiber board short fabric? Not as easy to work with as I'd thought. It is slippery, so cutting was more of a challenge than I had anticipated. It also seems to resist pressing. I cranked my iron up to the highest setting and used a press cloth (a scrap of cotton sateen) since I figured the microfiber would melt without one. Even so, it took quite awhile to get those seams nice and flat. Just be forewarned.
Cute little board shorts for a cute little boy. I'm planning to make him one more pair - maybe with colorblocking and/or pockets this time.