Best Free CAD Software to Open SLDPRT Files: Explore Top Free Solutions for Viewing SLDPRT Files

Opening SLDPRT files—which are SolidWorks part files—often requires proprietary software, but many users look for free alternatives to simply view, convert, or do basic edits without the cost. Whether you are collaborating with engineers, reviewing a client’s file, or expanding your design workflow, knowing the best free CAD tools can make a significant difference in productivity and flexibility. Let’s review some of the top free CAD software capable of handling SLDPRT files and how they stack up from a designer’s perspective.

1. FreeCAD – FreeCAD is one of the most versatile open-source CAD solutions. It supports importing and viewing SLDPRT files through plugins. While not every feature is perfectly compatible, for simple viewing, reviewing dimensions, and minor edits, FreeCAD is a reliable pick. The user interface may require a learning curve, but its flexibility is excellent for both hobbyists and professionals.

2. Fusion 360 for Personal Use – Autodesk Fusion 360 offers a free version for hobbyists and students. It can import SLDPRT files (though sometimes conversion is needed through STEP/IGES formats). Its clean user interface and cloud-based workflow are particularly useful for anyone managing multiple projects on different devices.

3. eDrawings Viewer – This free software from Dassault Systèmes is specifically made for opening and viewing SolidWorks files, including SLDPRT. While you can’t edit files, eDrawings is perfect for design reviews, measurements, and collaborating with non-engineering stakeholders. It’s lightweight and easy to install.

4. Onshape Free Plan – Onshape is a browser-based CAD platform. While it doesn’t natively open SLDPRT files, you can import files after converting them to compatible formats (such as STEP). Its cloud collaboration tools are a game-changer for remote design teams or quick concept presentation. In a design workflow that promotes sharing and feedback, Onshape’s ease of access is a significant asset.

5. SolidFace Free – With an approach similar to SolidWorks, SolidFace provides a free plan (with some limitations) and supports the import of SLDPRT files. It’s particularly beneficial if you need parametric design tools without the heavy price tag.

As a designer, I always consider not just the software’s capability to open a file, but also its relevance within a broader design ecosystem. Being able to seamlessly transfer a design file between platforms or collaborate with clients and teams is crucial. For instance, in a room or floor plan project, transforming complex CAD files into more visual, user-friendly layouts often requires a transition from raw engineering files to visualization platforms. Utilizing tools such as a 3D floor planner elevates client presentations and helps bridge the gap between technical CAD data and inspiring, tangible design experiences. By integrating these free CAD tools into your workflow, you can keep your design process both flexible and client-friendly without sacrificing professional standards.

Tips 1:

Always check the file compatibility and import/export options before committing to a CAD platform for regular use. Some free tools may only support viewing, while others support limited editing or conversion features. For collaborative projects, prioritize web-based or cloud-synced tools to ensure everyone can access the files easily.

FAQ

Q: What is an SLDPRT file?

A: An SLDPRT file is a 3D part file created using SolidWorks, commonly used for product design, simulation, and engineering.

Q: Can FreeCAD edit SLDPRT files?

A: FreeCAD can import and view SLDPRT files for analysis and review, but editing complex parametric features may be limited.

Q: Is there a way to view SLDPRT files without installing anything?

A: Web-based solutions like Onshape and online file converters allow you to view or convert SLDPRT files without local installation, though you may sometimes need to convert to compatible formats first.

Q: Are there online converters for SLDPRT files?

A: Yes, several free online tools can convert SLDPRT files to STEP, STL, or IGES for use in a wider array of CAD platforms.

Q: Why do designers use 3D floor planners with CAD files?

A: 3D floor planners help turn technical CAD information into interactive, visual layouts that enhance client understanding and engagement during the design process.