SolidWorks Keeps Crashing with Scan Data – Here’s Why
If you’ve tried to open or work with point cloud data in SolidWorks and experienced crashes, lag, or freezing, you’re not alone.
This is one of the most common problems engineers face when working with 3D laser scan data.
The issue isn’t just software performance — it’s usually a mismatch between how scan data is structured and how SolidWorks is designed to operate.
Why SolidWorks Struggles with Scan Data
SolidWorks is built for parametric CAD modelling, not for handling massive datasets made up of millions (or billions) of points.
A point cloud is fundamentally different from a CAD model:
- Point clouds = raw measurement data
- SolidWorks models = structured geometry
When you try to force one into the other without preparation, problems start.
Common Reasons SolidWorks Crashes
1. File Size Is Too Large
Point cloud files (RCP, E57, LAS) can easily range from:
- 2 GB
- 10 GB
- 50 GB+
Trying to load this directly into SolidWorks can overwhelm system memory and graphics processing.
2. Too Much Unnecessary Data
Scan data often includes:
- Background objects
- Equipment not relevant to the job
- Noise and clutter
- Temporary items
All of this adds weight without adding value.
3. No Data Optimisation
If the point cloud hasn’t been:
- Cropped
- Cleaned
- Segmented
…it becomes extremely inefficient to use in a modelling environment.
4. Incorrect Workflow
A common mistake is trying to:
❌ Import scan data directly into SolidWorks
instead of
✅ Preparing and converting it first
SolidWorks is not designed to be a primary point cloud processing tool.
5. Hardware Limitations
Even high-end machines can struggle if:
- RAM is insufficient
- GPU is not optimised
- Storage speed is slow
Large scan datasets require a workflow that suits both the software and hardware.
The Real Problem: Workflow, Not Software
In most cases, SolidWorks isn’t the problem.
👉 The workflow is.
Trying to go straight from scan data to modelling without preparation will almost always result in:
- Crashes
- Slow performance
- Frustration
How to Fix It
The solution is to use a structured scan-to-CAD workflow.
Step 1: Process the Point Cloud First
Use appropriate software to:
- Register scans
- Clean noise
- Reduce file size
- Segment relevant areas
This creates a manageable dataset.
Step 2: Define the Modelling Scope
Before opening SolidWorks, ask:
- What needs to be modelled?
- What level of detail is required?
- What is the end use (layout, fabrication, design)?
Avoid modelling everything.
Step 3: Convert to Usable Geometry
Instead of working with raw points:
- Extract surfaces
- Build reference geometry
- Simplify complex areas
This creates a model SolidWorks can handle efficiently.
Step 4: Model Only What Matters
Focus on:
- Structural steel
- Equipment interfaces
- Mounting points
- Clearances
Not every detail in the scan needs to be recreated.
A Better Approach to SolidWorks + Scan Data
Instead of forcing SolidWorks to handle everything, the workflow should:
👉 Use scanning for accuracy
👉 Use CAD for engineering decisions
If you’re working on projects involving:
- Plant upgrades
- Structural modifications
- Reverse engineering
- Equipment installation
…it’s critical to start with clean, usable data.
Where This Becomes Critical
This issue is especially common in:
- Mining plants
- Industrial facilities
- Brownfield projects
- Retrofit engineering work
- Shutdown projects
Anywhere real-world conditions don’t match existing drawings.
Learn More About SolidWorks Workflows
If you’re working with SolidWorks and need reliable models from scan data, these pages may help:
👉 https://www.hamiltonbydesign.com.au/solidworks-designer-sydney/
👉 https://www.hamiltonbydesign.com.au/solidworks-modelling-services/
👉 https://www.hamiltonbydesign.com.au/point-cloud-to-cad-services-sydney/
👉 https://www.hamiltonbydesign.com.au/reality-capture-sydney/
Need Help with Scan Data and SolidWorks?
If SolidWorks is crashing or struggling with your scan data, the solution isn’t to keep pushing the software — it’s to fix the workflow.
Hamilton By Design Co. supports Sydney and Australian projects with:
- 3D laser scanning
- Point cloud processing
- Scan to CAD conversion
- SolidWorks modelling
- Engineering support
Get in Touch
Need help turning scan data into usable SolidWorks models?
