This is a very simple pattern, and very open to adaptation. The following is to produce a potholder identical to mine, but feel free to adjust this pattern to suit your neds, or to use the chart for something else entirely.
This pattern makes use of double knitting, which creates a reversable fabric with the added benefit of being twice as thick, to protect your hands from the heat. For safety, you MUST use a flame-resistant fiber if you intend to use this as a potholder. If you’ve ever done a burn test, you’ll know that synthetic fibers like (acrylic or nylon) or a plant fiber (like cotton or linen) will melt and burn, respectively. This is true even in a blend. I recommend 100% wool, but feel free to stash bust some other, more luxurious fibers, if you wish.
Gague: 5 stitches by 6 rows per inch
Finished Measurements: 4 inches by 5 inches
Needles: Size 7
Yarn: I used Worsted weight yarn, but maintain a similarly tight gauge when substituting
To begin, cast on 20 stitches, holding two strands as one. If doing a reversable design, the two strands will be different colors, but if the design is to be the same on both sides, it’s possible to use just one center-pull ball, using strand from the center and the outside. Then, knit the first 2 rows, seperating the individual loops to back a “back layer” and a “front layer”. The front layer faces you, and the back layer faces away from you, but both sides are stockinette on the outside. The wrong side of both layers are facing each other. Knit two rows plain, then begin the chart. After the chart, knit 2 more rows plain, then bind off all stitches.
If you don’t want to go to the trouble of double knitting, it is of course possible to knit this twice and seam it together in the end.