Kristin and Jordan from kojo designs share a tutorial on their blog showing how to turn an old sweater into a super cute baby or toddler hat with pom pom balls at the top. These hats definitely have the awww… factor! Go to the tutorial.
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How to Sew a Patch on a Hat by Hand or Machine
Adding a patch to a hat sounds like one of those five-minute sewing jobs. Then you actually try to hold a stiff embroidered patch against a curved baseball cap while juggling a needle, thread and several uncooperative layers of fabric.
Suddenly, it feels less like a quick craft and more like wrestling a tiny fabric turtle.
Thankfully, sewing a patch onto a hat really is quite manageable once you know how to hold the patch in place, which stitch to use and how to work around the curved crown of the cap.
This beginner-friendly guide explains how to sew a patch on a hat by hand, how to attach one with a regular sewing machine and when an iron-on patch may—or may not—be the best option.
You can use these techniques on baseball caps, trucker hats, bucket hats, denim caps, canvas hats and many fabric sun hats.
What You Need
- Fabric hat or cap
- Embroidered, woven, chenille, felt or fabric patch
- Strong sewing needle
- Polyester sewing thread or embroidery thread
- Small sharp scissors
- Fabric clips, washable fabric glue or double-sided sewing tape
- Thimble
- Seam ripper
- Optional curved upholstery needle
- Optional sewing machine
- Optional denim or jeans needle
- Optional tailor’s chalk or removable fabric marker
A basic pack of assorted hand-sewing needles is perfectly adequate for most fabric caps. For thick embroidered or leather-look patches, a thimble and a slightly heavier needle will save both your fingertips and your patience.
Amazon usually has inexpensive packs of curved upholstery needles, thimbles and heavy-duty sewing needles, while Etsy is a lovely place to look for embroidered patches made by independent designers.
Which Hats Are Easiest to Patch?
Unstructured cotton caps, canvas baseball caps and bucket hats are generally the easiest options because the fabric can be folded and manipulated as you sew.
Structured baseball caps are a little trickier. The front panel may contain buckram, foam or another stiff stabilising material that gives the hat its shape. You can still sew through it, but you may need a stronger needle and a thimble.
Trucker hats often have a foam front panel. These can take patches well, but avoid pulling your stitches too tightly because the thread can cut into or compress the foam.
Before starting, check whether the inside of the hat has a sweatband, lining or internal seam covering the area where you want to sew. It is often easier to stitch the patch slightly higher rather than trying to force a needle through the thickest part of the sweatband.
Choose the Right Patch Size
The patch needs to sit comfortably on the curved section of the hat without buckling at the edges.
As a general guide:
- Small front patches: approximately 2–3 inches wide
- Medium front patches: approximately 3–4 inches wide
- Side patches: approximately 1–2 inches wide
- Back patches: approximately 1–2½ inches wide
A large, stiff rectangular patch may look lovely while lying flat on your table but develop raised corners when wrapped around a curved cap.
Before sewing, hold the patch against the hat and gently bend it to follow the shape. If it refuses to curve without creasing, choose a smaller patch or place it on a flatter section of the hat.
How to Position a Patch on a Hat
Put the hat on before deciding where the patch should go. A patch that looks centred while the cap is lying flat can appear slightly too high, low or sideways once the hat is being worn.
For a front-centred patch:
- Find the centre front seam or centre of the front panel.
- Measure the patch and mark its centre.
- Match the two centre points.
- Check that the bottom edge sits evenly above the brim.
- Step back and look at it from several angles.
Do not position the patch too close to the brim. You need enough room to move your needle around the bottom edge.
Once you are happy with the position, secure the patch with washable fabric glue, double-sided sewing tape or a few long basting stitches.
Pins tend to be awkward on a curved hat and can distort the patch placement. They are also surprisingly good at finding fingertips.
How to Sew a Patch on a Hat by Hand
Hand sewing is usually the easiest method for a structured baseball cap because you can work around the inside of the hat without trying to fit the entire cap beneath a sewing-machine presser foot.
Step 1: Thread the Needle
Cut approximately 18–24 inches of thread.
Longer thread may seem efficient, but it tends to knot itself around the hat, the patch and occasionally your sleeve. Thread the needle and knot the end securely.
Use thread that matches the outer border of the patch. Matching thread makes small variations in stitch length much less noticeable.
Step 2: Anchor the Thread Under the Patch
Insert the needle from beneath the patch so the knot is hidden between the patch and the hat.
Bring the needle up close to the embroidered border.
Step 3: Begin Whip Stitching
Take the needle down through the hat immediately beside the patch border.
Bring it back up through or just inside the patch edge. Continue around the patch using small, evenly spaced whip stitches.
Aim for stitches approximately 1/8 inch or 2–3 mm apart. They do not need to be microscopic, but closer stitches will hold the patch more securely and prevent the edges from lifting.
Step 4: Follow the Curve
Work slowly around corners and curves.
For a rounded patch, slightly angle each stitch toward the centre of the patch. For a rectangular patch, add an extra stitch at each corner so the corner cannot lift.
Keep the thread firm but do not yank it tight. Excessive tension can pucker the hat or cause the patch to cup inward.
Step 5: Finish Securely
Once you return to your starting point, take two or three tiny stitches in the same area.
Pass the needle through a loop of thread to form a knot, then hide the thread end beneath the patch or between the hat layers.
Trim the excess thread.
An Almost-Invisible Slip-Stitch Method
For patches with a thick embroidered border, you can use a small slip stitch instead of wrapping the thread over the outer edge.
Bring the needle up through the hat immediately beside the patch. Catch a small amount of the underside or inner border of the patch, then return the needle into the hat close to where it emerged.
This keeps most of the thread hidden.
A matching thread colour is important here. You can watch this visual guide to slip stitching a patch to see how the needle catches the patch edge without distorting it.
How to Sew a Patch on a Hat With a Sewing Machine
A regular home sewing machine can be used for many unstructured caps, bucket hats and five-panel hats.
The difficult part is not the stitching itself. It is fitting the curved hat beneath the presser foot while keeping the remaining fabric out of the way.
Machine Setup
Use:
- A fresh universal, denim or jeans needle
- Polyester thread
- Straight stitch or narrow zigzag
- Stitch length of approximately 2–2.5 mm
- Open-toe or zipper foot if helpful
Before sewing, remove any detachable machine accessory tray so you have as much free-arm space as possible.
Machine-Sewing Method
- Secure the patch with double-sided sewing tape or washable fabric glue.
- Fold or roll the back of the hat away from the stitching area.
- Slide the front panel carefully beneath the presser foot.
- Lower the needle by hand into the patch border.
- Sew slowly around the edge.
- Stop frequently with the needle down.
- Lift the presser foot and rotate the hat a small amount.
- Continue until the entire patch is secured.
- Backstitch briefly at the beginning and end.
Do not attempt to race around the patch in one smooth movement. A hat is not a flat quilt block, no matter how much we would like it to behave like one.
Small adjustments will produce a much neater result.
This baseball-cap patch sewing tutorial demonstrates how a patch can be attached using a standard home sewing machine and straight stitch. There is also a useful hand-sewing patch video showing how double-sided tape can prevent the patch from shifting while you sew.
Straight Stitch or Zigzag Stitch?
A straight stitch works well when the patch already has a finished embroidered or merrowed border.
Sew just inside the raised patch edge so the stitches sink into the border.
A narrow zigzag is helpful when:
- The patch edge is thin
- The edge is likely to fray
- You want the thread to wrap slightly over the patch border
- The patch is being attached to a soft or flexible hat
Test the stitch on scrap fabric first. A very wide or dense zigzag can make the edge stiff and may flatten the embroidered border.
Can You Iron a Patch Onto a Hat?
Some embroidered patches have a heat-activated adhesive backing, but hats are one of the more awkward items to press.
The curved surface makes it difficult to apply even pressure, and the crown may contain foam, plastic or synthetic stabilisers that can be damaged by high heat.
Iron-on patches are safest on:
- Cotton bucket hats
- Flat fabric caps
- Denim hats
- Unlined cotton panels
- Hats specifically labelled as iron-safe
Avoid direct high heat on:
- Nylon hats
- Polyester sports caps
- Foam-front trucker hats
- Waterproof hats
- Hats containing plastic inserts
- Faux leather or vinyl patches
Always check the hat’s care label first.
If you do use heat, place a folded towel inside the hat to support the curved panel. Cover the patch with a pressing cloth and press rather than sliding the iron back and forth.
Even when a patch is labelled iron-on, I prefer adding several small stitches around the edge. Heat adhesive can loosen after repeated wear, washing or being left in a hot car.
A stitched patch is far less likely to make a dramatic escape halfway through the school run.
Can You Glue a Patch Onto a Hat?
Fabric glue can work as a temporary or low-sew solution, particularly for costume hats or decorative caps that will not be washed often.
However, glue alone may:
- Stiffen the hat fabric
- Soak through lightweight material
- Become visible around the patch edge
- Release during washing
- Fail in hot conditions
For the strongest finish, use a small amount of fabric glue to position the patch and then stitch around the edge.
Avoid hot glue. It creates a thick, lumpy layer and can soften again in high temperatures.
How to Sew a Leather Patch Onto a Hat
Real and faux leather patches need slightly different handling because every needle hole remains visible.
Use:
- Leather or heavy-duty needle
- Polyester or upholstery thread
- Thimble
- Double-sided sewing tape
- Slightly longer stitches
Do not use pins because they leave permanent holes.
If machine sewing, increase the stitch length to approximately 3 mm. Very short stitches can perforate leather like the edge of a postage stamp, making it easier for the border to tear away.
For a thick leather patch, pre-punched sewing holes make hand stitching much easier.
How to Sew a Patch Over a Hat Logo
A patch is an easy way to cover an unwanted embroidered logo, stain or small area of damage.
Choose a patch at least 1/4 inch larger than the original design on every side.
Run your fingers over the old embroidery first. If it is extremely raised, the new patch may rock or sit unevenly. You may be able to remove some of the original stitching carefully with a seam ripper, although this can leave visible needle holes.
In many cases, it is safer to leave the existing embroidery intact and use a patch with a thick border that disguises the uneven surface.
Common Patch-Sewing Problems
The Patch Keeps Moving
Use double-sided sewing tape, washable fabric glue or several basting stitches before beginning.
Start sewing at the top centre and work around the patch rather than beginning at a corner that is prone to shifting.
The Hat Fabric Is Puckering
Your thread tension is probably too tight.
Relax the tension and allow the patch to sit naturally against the curve. Do not pull each stitch as though you are tying down a tarpaulin in a cyclone.
The Needle Will Not Go Through
Try a fresh, stronger needle and wear a thimble.
Push through areas between thick seams rather than directly through multiple seam allowances. A curved needle can also make it easier to work inside a structured cap.
The Patch Corners Are Lifting
Add extra stitches at each corner.
For a square or rectangular patch, stitch diagonally across the corner edge or make two stitches very close together.
The Patch Looks Crooked
Stop and correct it early.
Removing ten stitches is annoying. Removing the entire patch after proudly finishing the job is far more annoying.
Use a seam ripper or fine scissors to remove the uneven section, reposition the patch and restitch.
Washing a Hat With a Sewn-On Patch
Check the care instructions for both the hat and patch.
Whenever possible:
- Spot clean the hat.
- Use cool water.
- Avoid bleach.
- Do not wring or twist.
- Reshape the crown while damp.
- Allow the hat to air dry.
A plastic hat-shaping frame can help a baseball cap keep its form while washing, but gentle hand cleaning is usually the safest option for decorative patches.
Inspect the patch edge after washing. Repairing one loose stitch immediately is easier than resewing half the patch later.
More Hat-Sewing Inspiration
Once you have successfully customised one hat, there is a fair chance every plain cap in the house will begin looking like an unfinished project.
You might also enjoy this collection of 12 warm winter hats to sew for kids, which includes fleece, ear-flap and upcycled sweater designs.
For something suitable for sunny weather, take a look at this free one-hour bucket hat sewing pattern. A handmade bucket hat also gives you the advantage of attaching decorative patches while the panels are still flat.
Our sister site CraftBits also has a vintage newsboy peak cap pattern for anyone who prefers a knitted cap with a little old-fashioned character.
Helpful Video Guides
Sometimes it is much easier to understand patch placement and needle movement when you can see someone doing it.
- How to Sew a Patch on a Baseball Cap With a Home Sewing Machine
- How to Sew on a Patch by Hand
- How to Sew a Patch on a Hat by Hand
- How to Slip Stitch a Patch in Place
- How to Attach Hat Patches With a Heat Press
The best method depends on the hat, the patch and the equipment you already own. For most home crafters, hand stitching with matching polyester thread is the safest and most controllable choice.
Secure the patch before sewing, keep your stitches small and avoid pulling the thread too tightly. Once the first patch is finished, the second one will feel much easier—and you may finally have a respectable use for that little collection of patches hiding in the sewing drawer.