How to Make a Knurl in SOLIDWORKS

A knurl is a textured pattern used on handles, knobs, thumbscrews, and other parts that need grip. In SOLIDWORKS, you can represent a knurl visually with an appearance, or you can model actual cut geometry when the pattern needs to be shown in detail. The right method depends on whether the knurl is for a drawing note, a render, or manufacturing geometry.

Choose cosmetic or modeled knurling

For most drawings, a cosmetic representation with a clear note is enough. A real modeled knurl can make the file heavier and slower because it creates many small cuts or patterned features. Use modeled knurling only when the geometry must appear in a close render, 3D print, or manufacturing model.

This decision is important because a detailed knurl can create hundreds of faces. That may look impressive, but it can make drawings slow and make simple design changes more painful than necessary.

Create the base cylinder

Start with the cylindrical part that will receive the knurl. Make sure the diameter, length, and end features are correct before adding the knurl detail. Knurling is usually easier to add after the main shape is finished.

If the cylinder will be machined, confirm the final outside diameter before adding a modeled pattern. A knurling operation can change the effective surface texture and may have a specified finished diameter on the drawing.

Sketch the knurl path

For a modeled diamond knurl, create angled cuts or grooves around the cylinder. A common workflow is to create one helical or angled cut, pattern it around the cylinder, then create a second set in the opposite direction. The crossing cuts create the diamond shape.

Use patterns carefully

Knurls often require circular and linear patterns. Keep the number of instances reasonable while you are testing the feature. Once the pattern works, increase the count to match the visual density you need. Very dense patterns can slow down rebuilds, drawings, and exports.

When testing, build a short section first. If the cut direction, depth, or spacing is wrong, it is much faster to correct a small pattern than a full-length detailed knurl.

Check the direction and spacing

Knurl angle and pitch affect the final look. If the pattern does not line up cleanly, adjust the spacing, angle, or number of pattern instances. For manufactured knurls, match the specification from the drawing or tooling supplier instead of guessing a pattern by eye.

Add a drawing note

Even if you model the knurl, the drawing should still describe the required knurl type, pitch, width, and location when those details matter. A drawing note is often more important than detailed model geometry because it tells the manufacturer what to make.

For example, the note may specify straight, diamond, or left-hand/right-hand knurling. It may also identify a standard or supplier requirement. The model alone may not communicate those details reliably.

Troubleshooting

If the knurl feature fails, reduce the pattern count and test one cut first. If performance is poor, suppress the modeled knurl while editing other features. If the pattern creates small sliver faces, simplify the cut profile or adjust the angle and spacing.

Use the simplest representation that communicates the design clearly. A clear drawing callout with a light visual texture is usually better than a heavy model that is difficult to rebuild.

If the part will only be shown in an assembly view, a cosmetic texture or annotation is often enough. Reserve fully modeled knurling for cases where the actual surface geometry adds value.