

Trigon Bag Crochet Pattern
The Trigon Bag Crochet Pattern is a stunning blend of geometric elegance and vintage charm. Its unique triangular shape and bold moss stitch texture make it a standout accessory that’s both functional and fashionable. This design perfectly captures the beauty of vintage crochet while offering a creative challenge for those who enjoy making structured bags. With its intricate details and stylish aesthetic, the Trigon Bag is a wonderful project for crocheters looking to create a truly distinctive piece.
The moss stitch, which forms the basis of the bag’s texture, is a simple yet striking technique. It alternates half double crochets worked in the front and back loops, creating a subtle ridged pattern that enhances the bag’s modern geometric look. For those unfamiliar with the moss stitch, it’s an easy stitch to learn, and the pattern provides clear, step-by-step instructions to guide you. Shaping the bag into its triangular form and assembling the gussets may seem a bit challenging at first, but these steps are straightforward with careful attention to the directions. Any obstacles encountered during this project can be overcome with patience, making it a great opportunity to build skills and confidence.
Completing the Trigon Bag is a deeply satisfying experience, resulting in a versatile accessory that’s sure to turn heads. The combination of structured panels and eye-catching texture makes the finished bag a unique and practical addition to your collection. Whether you’re creating it for yourself or as a thoughtful handmade gift, the Trigon Bag is a project that combines creative expression with technical growth. This pattern offers a rewarding and approachable challenge for crocheters of all levels, ensuring a finished product you’ll be proud to show off.
Discover more timeless designs from this vintage collection by exploring Bags and Hats Crocheted with Raphael Brand Gimp No. 5 (1939), where you’ll find all the patterns from this classic booklet.
This pattern is transformed, adapted, and expanded from a public domain design originally published in Bags and Hats Crocheted with Raphael Brand Gimp No. 5 (1939). While the original design is in the public domain, the rewritten instructions and supplementary content on this site are ©Tiffany Bliss Mullins, 2024. All rights reserved. Have questions about this pattern, public domain, or copyright? Visit the FAQ page for answers and resources.
Key Details
- Skill Level: Intermediate
- Stitches Used: Single Crochet (SC), Half Double Crochet (HDC), Moss Stitch
- Finished Size: Approx. dimensions will depend on yarn weight and hook size.
Materials
- Gimp: 7 tubes of “Raphael Brand Gimp” (or a modern substitute). You can read more about Gimp and modern substitution suggestions here: What is Gimp?
- Lining fabric for bag interior
- Slide fastener (zipper)
- Crochet hook to match your chosen yarn
Pattern
Special Stitches
Moss Stitch (worked in Half Double Crochet):
- Row 1: HDC in the back loop only of the first stitch, HDC in the front loop only of the next stitch, HDC in the back loop only of the next stitch, repeat from * to end of row. Ch 2, turn.
- Row 2: HDC in the front loop only of the first stitch, HDC in the back loop only of the next stitch, HDC in the front loop only of the next stitch, repeat from * to end of row. Ch 2, turn.
To increase in moss stitch: Work 2 HDC in the same loop, maintaining the front/back loop alternation.
To decrease: Skip the second and third stitches at the beginning or end of the row.
Bag Body
- Foundation Chain: Ch 108.
- Row 1: HDC in the 3rd chain from the hook and each chain across. Ch 2, turn.
- Rows 2–3: Work Moss Stitch (as described above).
- Rows 4–7: Alternate Row 1 and Row 2 of Moss Stitch, increasing 1 stitch at the end of every row (112 stitches at Row 7).
- Rows 8–17: Continue in Moss Stitch, increasing 1 stitch at the end of every row until you reach 120 stitches.
- Rows 18–24: Alternate Moss Stitch Rows 2 and 3 without increasing.
- Rows 25–37: Continue alternating Moss Stitch Rows 2 and 3, decreasing 2 stitches at the beginning and end of each row until you have 98 stitches. Fasten off.
Make a second panel identical to the first. Join the two sides together with SC along the edges from Rows 1 to 31.
Base
- Foundation Chain: Ch 98.
- Row 1: HDC in the 3rd chain from the hook and each chain across. Ch 2, turn.
- Rows 2–6: Alternate Moss Stitch Rows 2 and 3. Fasten off.
- Attach the base to the bottom of the bag using SC.
Foundation Top
- Pleat the top edge of the bag as shown in the original illustration and sew it firmly.
- Attach the Gimp yarn to the right side of the pleated top. Work 26 SC across the pleats, inserting the hook through all layers. Ch 1, turn.
- Rows 2–13: Work Moss Stitch, alternating Rows 1 and 2 as described, using SC. Ch 1, turn after each row. Fasten off. Fold the top down by 7 rows to form a decorative edge.
Handle
- Attach Gimp to the 6th stitch of the folded top and work 16 SC across. Ch 1, turn.
- Rows 2–10: Work Moss Stitch with SC, alternating Rows 1 and 2.
- Row 11: Work Moss Stitch with 1 increase in the first and last stitch.
- Rows 12–19: Continue alternating Moss Stitch Rows 2 and 3.
- Row 20: Work Moss Stitch, increasing in the first and last stitch. Fasten off.
Create a second handle panel and join the ends with SC. Attach to the bag’s foundation top.
Notes and FAQs
- What is Gimp? Gimp is a stiff thread often used in vintage crochet patterns. Modern substitutes can include thicker yarns or specialty cords. Learn more about Gimp and substitution suggestions here.
This Trigon Bag is a wonderful way to blend vintage charm with modern crochet techniques. Enjoy making a piece of history while creating a beautiful accessory. If you loved this pattern, be sure to explore more vintage crochet designs and share your creations!