P2tog & P2tog tbl

On the knitting board, the p2tog and p2tog tbl are paired together, one being done on the bottom rake and the other on the top or vice versa. This is done to ensure that the slant of the decrease is correct on each side of the fabric. A description and direction for each decrease is given below. The easiest way to set up the knitting board is to setup the stitches on the bottom rake and then turn the board and set it up the same way. So, work a P2tog stitch on the left bottom rake and a P2tog tbl stitch on the right bottom rake, turn the board and repeat. If you are using p tbl stitches, work a P2tog tbl stitch on the left bottom rake and an P2tog stitch on the right bottom rake.

Purl Two Together (P2tog) /
Purl Two Together through the back loop (P2tog tbl)

p2tog stitch

P2tog is a right slanting decrease stitch in which two stitches are purled together. P2tog tbl is a left slanting decrease stitch in which two stitches are purled together through the back loop. On the loom this means picking up one wrap, putting it on the peg on either side (depending on the stitch), wrapping the peg as you normally would and then knitting off. See the purl stitch and p tbl stitch if you are not sure how to purl.

This stitch is more common in needle knitting since loom knitting is all done on the RS.

P2tog
P2tog tbl
Because a P2tog stitch is a right slanting decrease, it is worked on the left bottom and the right top rake. It should be matched with an SSP stitch on the opposite rake, same side.
  1. Move the wrap of the peg to the left on top of the peg you want to knit a P2tog stitch.

  2. Setup the knitting board if necessary for decreasing and set the the P2tog tbl stitch on the other rake.

  3. Wrap the knitting board for the purl stitch.

  4. Knit off.
Because an P2tog tbl stitch is a left slanting decrease, it is worked on the right bottom and the left top rake. It should be matched with a P2tog stitch on the opposite rake, same side. Remember if this is a row that is all purled as opposed to purl tbl, you will need to e-wrap this peg so it will be a purl tbl stitch.
  1. Move the wrap of the peg to the right on top of the peg you want to knit a P2tog tbl stitch.

  2. Setup the knitting board if necessary for decreasing and set the the P2tog stitch on the other rake.

  3. Wrap the knitting board for the purl stitch.

  4. Knit off.