- Lay down one bag, smooth out the wrinkles and squeeze out the air by running your hand over it from the bottom seam to the top. Fold neatly into thirds.
- Cut off the bottom seam and the handles, if any. Fold in half or thirds again so that you have a thickness that will be easy to cut.
- Lay the folded bag against a yardstick and with scissors make snips to mark your desired cutting lines, every 2.5 cm. The plastic will slide around a little but don't worry if your strips are not all the exact size.
- You'll end up with a pile of loops. If your plastic bags vary slightly in color or opacity, connect them together randomly so that the difference won't be noticeable. If they are significantly different, you could ball them separately for a striped project.
The loops are connected by making a square knot. Shake out the loops. - Place the end of loop #1 on top of loop #2. Pull gently and evenly to make the knot. Tip: I found that by keeping my thumb in the loop as I pulled helped to make a neater knot. Pull out your thumb just before you finish the knot.
- Leave the knot slightly loose as it may need adjustment later as you crochet. Tighten it just before you crochet that section. The knots are really not noticeable in the end product.