How do I prevent dense nodes or anchor points in my design file?

Export your design directly from your CAD software using settings that preserve smooth arcs instead of breaking them into line segments. Fewer nodes means smoother cut edges and better production quality.

Preventing dense nodes or anchor points in your design file results in better edge quality for your parts. Read on for file setup and export tips to reduce node density!

What are nodes?

Vector files are made of paths, and the beginning/end of each path is an anchor point or node. Curved paths have nodes along arcs, usually 1–2 per arc.

Every time the cutting tool reaches a node, it makes a brief stop.
Fewer nodes = smoother cut edges.
For CNC routed parts, we need at least .400” between nodes in 2–3 areas for fixture tabs.

The vector file example on the right is made up of paths and nodes (the blue dots).

Common cause of dense nodes:

Bad file exports
Using third-party file converters
Splines broken into many line segments instead of smooth arcs

How to prevent dense nodes when exporting:

Autodesk Fusion

Design as a sheet metal part.
Create a flat pattern → export DXF
Check Convert splines to polylines before export

Tip: if your part requires bending services, import our Autodesk Fusion sheet metal rules and set up your design with the sheet metal rule for your required material.

SolidWorks

Use arcs instead of splines when possible
Try Simplify Spline before export
In DXF/DWG settings, choose Export all splines as splines

Tip: if your part requires bending services, import our SolidWorks gauge tables and set up your design with the sheet metal rule for your required material.