Digitizing for Towels: The Knockdown Stitch Guide

Embroidery on flat cotton is easy. Embroidery on high-pile fabrics like terry cloth towels, Sherpa fleece, or faux fur is a nightmare if you don’t know the secret.

The problem is “The Peek-Through.” As the needle stitches, the long fibers of the towel poke through the thread. Your crisp lettering ends up looking like it is drowning in a sea of fuzz. Or worse, the stitches sink so deep into the pile that they become invisible.

Many beginners try to fix this by increasing the density to “bulletproof” levels. This fails. It just makes the towel stiff and uncomfortable.

The solution is the Knockdown Stitch.

What is a Knockdown Stitch?

A Knockdown Stitch (also called a “Nap Tack” or “Global Underlay”) is a base layer of stitching that goes down before your design.

Think of it like pouring a concrete foundation before building a house on a swamp. It mats down the fluffy loops of the towel to create a smooth, flat surface. Your actual logo is then stitched on top of this flattened area, ensuring perfect clarity.

This is different from standard underlay. Standard underlay (like we use for Beanies) sits hidden inside the letters. A Knockdown Stitch extends slightly outside the design.

Step 1: Creating the Shape

To create a knockdown, you digitize a fill shape that matches the silhouette of your logo but is slightly larger.

The Offset Rule: We recommend an offset of 1.5mm to 2.0mm. If the offset is too small, the towel loops will creep over the edge and cover your outline. If it is too big, it looks like a blocky patch.

Step 2: Density and Stitch Type

Do not use a standard Tatami fill for this. A standard fill is too dense and will make the towel stiff as a board. You want a Light Mesh or Cross-Hatch pattern.

Recommended Settings:

• Standard Towel: 1.0mm to 1.2mm spacing. Cross-hatch pattern at 45/135 degrees.
• Sherpa/Fleece: 0.8mm to 1.0mm spacing. Slightly tighter because Sherpa is denser.
• Faux Fur: 1.5mm spacing. Fur needs breathing room or it will look matted and oily.

You only need enough thread to hold the loops down, not to cover the fabric color completely. See more about fill types in our Stitch Types Guide.

Step 3: Color Strategy (Invisible vs. Badge)

You have two choices for thread color, and it changes the look completely:

• The “Invisible” Method: Match the thread color exactly to the towel (e.g., White thread on a White towel). This makes the knockdown stitch disappear visually, so all you see is the logo floating on a smooth surface. This is the preferred method for high-end hotels.
• The “Badge” Method: Use a contrasting color to create a deliberate background shape. This effectively turns your embroidery into a faux Custom Patch directly on the garment. This is popular for streetwear brands on hoodies.

Why Not Just Use Solvy? (The Myth)

Many new embroiderers ask, “Why can’t I just use Solvy (Water Soluble Topping)?”

Solvy is essential (read about it in our Underlay Guide), but it is temporary. Solvy sits on top of the loops during the stitching process to prevent snagging.

However, once the customer washes the towel, the Solvy dissolves. Without a permanent knockdown stitch underneath, the towel loops will spring back up and cover your design. A Knockdown Stitch is permanent structure. It keeps the logo looking fresh for the life of the towel.