Things You'll Need
Paper and pencil
Light weight cotton yarn
1/2 inch elastic
Needle and thread
How to Crochet a Thong. There's no sexier fashion statement than a crochet thong. All you need is some lightweight cotton yarn, and a little imagination, and you're well on your way to crocheted pseudo-panties. Follow these instructions and you can crochet a women's thong.
Make a Plan
Take some measurements. Take a tape measure and determine how wide across your front you would like your thong to be. Then take a measurement from the front elastic of your underwear, between your legs and to the back elastic. This will be the main part of your thong.
Check your stitch gauge. To do this, you should chain at least 30 stitches, and work in as many rows as necessary to get a piece that is at least four inches long. Use your tape measure to determine how many stitches you need per row to get an inch.
Calculate the number of stitches you'll need to chain to get a length equal to the top boarder of your thong. For example, if the top front of your thong is five inches, and you stitch eight stitches per inch, simply multiply the two together: You will need to chain 40 stitches to start.
Determine how many stitches you need to decrease total. Take half the number of stitches per row in your gauge and subtract that number from the number of stitches in your first row. This gives you the number of stitches you'll need to decrease.
Figure out how many rows you must spread this decrease over. To do this, divide the long measurement you took in Step One in half. Next, measure how many rows on your gauge equals one inch. Multiply the number of inches by the number of rows per inch, and that's how many rows you have to decrease.
Decide how many stitches you will need to decrease total. Take the total number of stitches you came up with in Step 3. Then subtract the number of stitches per inch. This is the number of stitches you will have to decrease.
Divide the number you got in Step 5 by the number you got in Step 6. This will give you the number of stitches you will need to decrease per row to shape the front of your thong.
Chain the number of stitches you calculated in Section 1, Step 3. Then chain one, turn and single crochet your first row. Then chain one and turn.
Continue with the rest of the piece by decreasing the number of crochet stitches per row you calculated in Section 1, Step 7. Continue decreasing until you are left a half to One inch wide row.
Single crochet the rest of your piece until it equals the long measurement you determined in Section 1, Step 1. Then tie off your yarn.
Cut a piece of elastic so it is the length around your waist or hips, where ever you want your thong to sit. Sew the ends together into a circle.
Make a chain long enough so that the number of stitches per row will equal the length of the elastic you just cut.
Single crochet around the elastic until the entire elastic is covered. Then tie off your yarn.
Use a needle and thread to sew the bottom portion of your thong to the elastic, and you're ready to wear.