I did a post on thumb making before. But here is another one!
I'm knitting fingerless gloves this week so I've decided to review thumbs. Partly because I'm getting better at it and need to reinforce my own processes ;o)
As these pictures begin, I've already knit my cuff and the tube portion of the hand. I'm using
Lorna's Laces Shepherd Sport, 100% wool.

Now I am getting ready to begin knitting my thumb.
I have raised all except 22 of the 54 needles out of work, beginning with the 4
th needle behind the left red hash mark (9 o'clock) and all around to the right front yellow hash mark.
You can see on the table to the left of the sock machine I have two double pronged heel forks and to single weights at the ready.

You may have to enlarge this to see it... I'm trying to show you where the sweet spot is for my heel fork placement. The two
red fingers are the one fork and the
blue fingers point to the prongs of the other fork.
I set a single weight on each heel fork.

So numbers
1 and
2 in the picture are the fork weights, and number
3 is the set of 3 main weights on the body of the work.
This
position is typically good for about 10 - 12 rows,
after which I re-hang the hooks and weights in the original position. Beyond 10 or 12 rows and stitches start to get missed.
To knit the thumb (in this case a partial thumb for a fingerless glove) I will knit 26 rows. Instead of going round and round as in tube knitting, I will go back and forth (13 times each).
Even with a good spot for hanging the weights, the first stitch on each row is a watch point.
I'm finding it a good policy to gently place the index finger of my left hand against the inside of the needle that will knit first, which ever direction I'm going. This helps the yarn snug up and makes sure it gets caught by the needle.
Then as soon as I see the first stitch is caught I
STOP cranking, and move my left hand down ONTO the two single weights - I park my left thumb on the right weight and a few assorted fingers on the left weight. I apply a GENTLE pressure, and finish cranking that row.
When I was relying on the weights alone I was missing (and having to pick up) the first stitch in each row frequently, and had to raise the hooks every 6 rows.

Here I've completed the first 10 or 12 rows of the thumb flap. You can see the holes forming at the junction of the flap and the main body. This hole grows as the flat gets longer and the body stays the same.

Now I've completed the 26 rows of my thumb strip. I've cut the yarn leaving a generous tail, and placed the tail on the inside of the cylinder. The tail will be used to finish the top edge of the partial thumb and to close the side of the thumb.
If you look close....You can see how the creation of the holes while knitting the thumb strip stretches the first stitch on each side of the main body knitting. This will get snugged up as the work progresses.
The
red arrow shows the bar between first stretched stitch and the stitch I will pick up first. When I begin to rehang stitches I will look for the loop of the adjacent stitch and hang that on my first empty needle. Because the works is stretched in progress, that loop can be tightened up and
difficult to find. The
green arrow points to that tricky little hiding place.
I know if I've grabbed the correct part of the stitch if that bar by the red arrow
immediately snugs up.
But before I can pick up stitches, I have to get the strip OFF the needles.

Here I've knit on 10 rows of scrap yarn. When I cut the tail of the scrap yarn, on the right hand side of the knitting, I use a darning needle and run the tail through the last couple of stitches on the needles - makes it less likely to unravel when I take the work off the needles.

To take the thumb strip off the needles I FIRST remove the two sets of heel forks and weights. But not the main weight. I apply a gentle pressure with my left hand to the thumb
strip, inside the cylinder, and give a quick crank. The work pops off.
The thumb is now knit, and the next step will be to pick up stitches and form the gusset, which I'll blog on Friday.