Writing instruments
How to make a simple felt lined pen sleeve with a sewn divider to protect multiple pens and prevent nib contact during transport.
Craft a compact felt sleeve with a built-in divider that guards nib tips, minimizes ink transfer, and keeps several pens organized during travel using basic hand-stitching and readily available materials.
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Published by Robert Harris
August 12, 2025 - 3 min Read
Felt sleeves are a practical project for anyone who carries more than one pen or nib. The goal here is a compact sleeve that cushions each writing instrument and prevents nibs from touching, which reduces scratches and ink leaks. Start with a piece of thin, dense felt in a color you like, plus a contrasting inner color for visibility. Measure your longest pen or nib; add seam allowances, and plan for a sewn divider that creates two separate pockets. A simple rectangle works, but a small gusset permits snug storage without crowding. You’ll also need strong thread, a needle, scissors, pins, and a basic ruler.
Once your materials are ready, begin by cutting two identical felt panels and a thinner strip for the divider. The divider should be long enough to span the sleeve’s interior while leaving room for the edge seams. Use one color on the exterior and another on the interior to help identify pen types at a glance. Pin the divider in place along the center, ensuring it’s straight and evenly aligned with the edges. When you stitch, use a whip stitch or a running stitch close to the edge so the divider remains secure and the pockets stay uniform. Take care to avoid bulky knots at the seams.
Steps for sewing a divider that keeps pens separate
The layout is critical for a tidy, functional sleeve. I start by sketching a simple plan: a single large pocket on one side for longer pens, a secondary smaller pocket on the opposite side for slimmer nib units, and a central divider to separate them. The felt’s density matters; too thin and the nibs can still touch, too thick and sewing becomes unwieldy. A light cardboard template helps mark the seam lines precisely. A slightly wider opening at the top accommodates pens with caps. Finish by deciding whether to add a small flap or light closure to secure the contents during transit.
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With the plan in hand, transfer the measurements to the fabric and cut carefully. If your felt frays, you can apply a light fabric glue along the cut edges or use a tight zigzag stitch around the perimeter. Align the divider along the center line, spacing it so each pocket has a comfortable depth. Sew the divider to the interior surfaces with small, even stitches, keeping the thread taut but not puckered. Then attach the exterior panel to seal the sleeve, leaving the top open for ease of insertion. Press lightly to flatten seams so the fit remains neat.
Finishing touches for durability and reliable daily transport of your pens
The sewing itself should be deliberate and precise. Thread the needle with a sturdy, color-matching thread and knot securely. Start by stitching the divider to one edge of the sleeve using a backstitch for durability. Repeat on the opposite side, ensuring the divider sits flat and does not curl. Then close the outer edges by sewing a narrow seam around the perimeter, leaving the top open. When you reach the corners, pivot with small, controlled stitches to maintain a clean square. A gentle iron can help set the shape, but avoid scorching the felt.
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After constructing the basic shell, create the top edge finish. Fold the top edge inward by about one-quarter inch and stitch down with a running stitch, which produces a neat hem without bulky thread. If you desire extra durability, you can add a lightweight bias tape along the top. This not only strengthens the opening but also provides a more finished look. Finally, test the sleeve by slipping in a few practice pens to verify the pockets’ depth and the divider’s stability. Adjust any loose stitching before use.
Care and maintenance tips to extend the sleeve's life
A few thoughtful refinements can make a big difference in daily use. Consider choosing a contrasting interior color to help you spot your favorite pen quickly. A small, decorative satin stitch along the top edge adds a subtle, durable finish. If you carry a pen with a cap, ensure the pocket depth accommodates the cap height without forcing the cap to protrude. A tiny external tab or loop can be added to help slide the sleeve into a bag or clip it to a notebook. Remember to keep the seams tidy and the interior free of stray threads.
For protection against moisture and general wear, a light spray of fabric sealant on the exterior can be beneficial. Apply sparingly and allow it to dry completely before use. The felt itself absorbs a small amount of moisture, so protecting it helps maintain shape and cushioning. Store the sleeve in a dry place when not in use, away from direct sun that could fade colors. Periodically inspect the seam lines for any signs of strain, particularly after carrying multiple heavy pens. If you notice wear, reinforce those sections with extra stitching.
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Ideas for personalizing while keeping professional protection
Routine care keeps the sleeve looking neat and functioning well. Gently hand-wash the felt in lukewarm water with a mild detergent if it becomes soiled, then air-dry flat to avoid warping. Avoid machine washing, which can distort the divider or loosen stitches. After cleaning, press the surfaces lightly with a warm iron; use a pressing cloth to protect delicate color contrasts. Store the sleeve flat, not folded, to maintain the pocket shapes and prevent creases that could snag on nibs. If loops or closures are present, check them for looseness and re-sew any weak spots promptly.
A simple maintenance routine keeps fibers resilient. Every few months, inspect all stitching for loosening threads and re-sew as needed with a tight, even stitch. If the divider shows signs of wear, replace or reinforce the seam with a sturdier stitch pattern, like a small zigzag along the joint. You can also refresh the look by swapping the exterior felt for a fresh color while preserving the divider’s alignment. This approach balances aesthetics with function, ensuring your precious pens travel safely in everyday contexts.
Personalization can be lightweight and practical. Embroider initials along the exterior or add a minimalist emblem to the top edge. A thin decorative cord or small bead trim along the opening offers a touch of style without compromising the sleeve’s flexibility. If you frequently switch between field notes and studio sessions, consider labeling the pockets with tiny, heat-stamped tags using a craft iron. For a more tactile grip, attach a narrow ribbon strip to the exterior, which can help you retrieve the sleeve from a bag quickly and with confidence.
Finally, test the sleeve in real-world conditions to confirm it performs as intended. Slip several pens with varying nib sizes into the pockets, ensuring the divider maintains separation. Shake the sleeve gently to simulate transport in a backpack or briefcase and check for any movement or crowding. If everything remains orderly, you’ve created a practical, evergreen accessory that’s easy to reproduce. Document the steps and tips so you can refer back later or share the project with friends who appreciate handmade, protective cases for their writing instruments.
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