How To Thermal Half Double Crochet
- Andrea Peterson
- May 8
- 2 min read
Updated: May 12
Hi there!
Today I wanted to give more information about the Thermal Crochet technique. When I posted about the Thermal technique I only talked about the thermal single crochet stitch. This technique can also be used for half double crochet. In my initial blog post I only wanted to cover the basics about the technique and the simple single crochet stitch. Now I want to talk about the Thermal half double crochet stitch.
As it suggests instead of working single crochet stitches each stitch will be completed like a traditional half double crochet stitch. The placement of the stitches is the same as the single crochet version. The difference is that you will yarn over before working into the back loop only and the unworked front loop from the row below. After that you will pull through the two loops, yarn over and pull through all three loops on the hook. This stitch is thick and the texture is really nice. It looks like two single crochet stitches on top of each other with a line between each.

Let’s get into the written instructions for this stitch. You can also visit my YouTube channel for the video tutorial.
Abbreviations:
BLO: Back Loop Only
Ch: Chain
Hdc: Half Double Crochet
Yo: Yarn Over
Chain as many as you would like for the width of your project.
Row 1: In the second chain from the hook Hdc into each back bump of the chain to the end, Ch 1.
Row 2: Flip the first row so that it is vertical, Yo, insert hook in BLO and then into the Ch loop below, Yo and pull through the two loops, Yo and pull through three loops (same as a traditional Hdc). Repeat this until the end, Ch 1, turn.
Row 3: Yo, Insert hook into BLO and then in the unworked front loop from the stitch below, Yo and pull through both loops, Yo and pull through three loops on hook, Ch 1, turn.
Repeat Row 3 until you have the desired size.
Final Row: Yo, Insert hook into both loops of the Hdc and the unworked loop from the previous stitch, Yo and pull through all loops, Yo and pull through three loops on hook, Ch1 to fasten off.
I hope this was helpful.
Happy hooking!
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