This is my favourite way to cast on these days. The long tail cast on is my ‘go to’ cast on but my cast on tension is generally tighter than my knitting tension. Originally developed by June Hemmons Hiatt, I use a variation of the Double Needle Cast On to consistently incorporate the right amount of spacing between my sts so my cast on edge is the same gauge (same width) as my knitting.
This is a video I posted on Instagram (click the image to play). I’ve referred students to this video so many times that I thought it should have its own spot on my website, so it’s easier to find.
It’s that extra bit of yarn wrapping around the smaller, bottom needle that introduces just the right amount of space between my sts so they don’t draw in. It’s also a great stretchy cast on for socks and lace.
Use the needle size called for in your pattern (or whatever size you need to get gauge).
Set up the yarn in your hands and on the needle to cast on the way you usually do a long tail cast on. Generally you have the tail around your thumb and the yarn drawing from the ball around your index finger.
Cast on one stitch normally. You should have your first stitch (slip knot or however you usually begin), plus one stitch, totaling two stitches on your needle.
Then hold a second, smaller needle parallel to and underneath your cast-on needle.
To cast on the next stitch, insert both needles together into the thumb loop in the usual fashion (for a long tail cast on).
Wrap the finger yarn around the top (larger) needle by sliding the yarn between the two needles from back to front, then over top of the larger needle.
Angle both needles together out of the thumb loop (the way you usually would for a long tail cast on).
Then bring the top strand of the thumb loop between the needles from back to front and down around the lower needle.
Drop your thumb out of the loop and tighten it up in the usual manner.
Repeat Steps 1 to 5 to cast on as many sts as you need.
After you’ve cast on enough stitches, simply slide the smaller, bottom needle out and your cast on is complete.
This technique allows me to adjust my tension perfectly for every yarn weight by using different sized needles for the lower needle.
What size needle should you use for the second needle?
It will depend on your own personal tension but here are the sizes I usually start with for the different yarn weights. As always, swatching is your friend!