When executed correctly a long-tail cast on should be a stretchy cast on. I've never really considered before now, that some people's LTCO may not be as stretchy as it should.
So here's a couple of photos to highlight how stretchy it should be:
This is the neckline for the smallest sizing at rest, this has been worn and tried on so has stretched a little bit laterally.
Same neckline, stretched out not quite to its widest capacity. See all that stretch there? There's at least a good 5 inches laterally and 10 inches overall.
In testing I tried it on over both my almost 24 month old, who has a bigger than average head for his age,
and myself. There was even a bit of room over my noggin. I've got a 56cm head.
I even tried it on over DK's head, it fit over his head but was a bit tight on his nose hehehehe Obviously not so pretty :P
Anyway, if your LTCO is not as stretchy as mine and you do have issues with the fit, here are a couple of things to try:
1. When you're working your cast on, make sure the stitch you create is not too tight or snug on the needle. Remember the aim is to create a stretchy stitch so you don't want it to be too tight. There does need to be a bit of give and leeway between each stitch.
2. Resist the urge to tighten each stitch to make the stitches more uniform in size. The main issue for many people seems to be with the last movement in creating each stitch. The tension you create with your thumb and the up and over should be just enough, it doesn't need anymore applied. DO NOT tighten the stitch after this movement.
3. If you're still not getting the required stretch, try casting on over two needles. This should force you to cast on more loosely.
For some more advice on achieving the ultimate LTCO see the Techknitter's blog post here. She really is the Knitting Sage, when it comes to all things technical!!!
Go on, try it on over your head too. I know you want to!
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