10 Minute Triangle Pencil Case DIY (no lining required)

Using vinyl for this project makes it quick and easy to complete. Vinyl won’t fray, so you don’t need a lining (but can add one if you like). It’s also a durable material that is water resistant, so marks can be wiped right off.

This pencil case pattern takes my basic rectangular pattern (which can be found here) and expands out along the bottom to create a flat base and triangle shape.

The triangle pencil case pattern only requires two extra short stitches, so it only adds a few extra seconds to production time, but you can charge more for this style (if you’re making pencil cases to sell).

Materials

• Vinyl
• Thread
• Zipper – 8″

Tools

• Sewing machine
• Scissors/rotary cutter
• Ruler
• Point turner tool (to push corners of pouch out)

*This pattern uses a 5/8″ seam allowance.

 

How to sew a triangle pencil case video tutorial:

Step 1 – Cut pattern pieces

Here is a printable PDF you can use to cut your pattern pieces:

Free Printable Sewing Pattern: Triangle Pencil Case

For this project, you’ll need:

• Panels = 2 pieces of vinyl (download pattern or see video/images for size)
• Zipper tabs = 2 pieces of vinyl that are 1-7/8″ x 1-1/4″
• Zipper = 8″ (I like to use zippers you can cut to size, but any plastic zipper will work. The vinyl tabs will keep the zipper pull on once the pouch is finished.)

Step 2 – Sew vinyl tabs to end of zipper

Line up the vinyl tabs on each end of the zipper, right sides together and with the longer side of the tab running along the zipper.

Using a 5/8″ seam allowance, stitches the tabs to the zipper.

Flip the tabs back and topstitch.

 

Step 3 – Sew zipper to panels

Sew the top edge of the zipper to the top edge of one of the panels; right sides together.

Then flip the panel back and top stitch.

Repeat for the bottom edge of the zipper sewing it onto the top edge of the other panel, then top stitch.

 

Step 4 – Sew sides and bottom

Fold the panels with right sides together, lining up the sides and the bottom.

Stitch the sides and bottom using a 5/8″ seam allowance.

Trim the excess seam allowance.

 

Step 5 – Sew corners

Flatten the side seam and bottom seam and line the seams up.

Stitch 5/8″ away from the straight edge the bottom of the bag creates.

(If this step isn’t clear, it may help to watch the video)

Repeat for the other corner.

Cut away the excess seam allowance.

Turn the bag right side out and use a point turner tool to push the corners out, if needed.

Although this pencil case doesn’t need a lining, you can add one if you like.

This is a good product to make and sell on Etsy or at craft show, if it’s a fit for your target market. Other products you could add to the product line are:

Basic rectangular pencil case: 10 Minute Pencil Case DIY (No Lining Required)

A lunch bag: Simple Lunch Bag DIY (that’s water-resistant)