If you need advanced API access (e.g., .NET, C++), consider upgrading to a more extensible platform like BricsCAD, nanoCAD, or AutoCAD LT with LISP.

Unlike strictly 2D tools, DoubleCAD XT 6 allows you to draw in 2D and then extrude, sweep, or loft those profiles into 3D solids. It utilizes the ACIS® modeling kernel (the same engine found in high-end software like SolidWorks and AutoCAD), ensuring precise geometry for boolean operations (union, subtract, intersect).

If you want, I can:

Which of those would you like?

DoubleCAD XT 6 is a free, professional-grade 2D CAD application developed by IMSI/Design, the makers of TurboCAD. It is designed to be a powerful alternative to AutoCAD LT, featuring a similar interface and command structure that makes it accessible for those already familiar with Autodesk products. Key Features

File Compatibility: It can open and save .DWG and .DXF files (from R14 to 2013) and supports other formats like .3DS, .OBJ, and SketchUp.

2D Drafting Tools: Includes a full suite of 2D tools, such as the ability to set line length and angle dynamically while drawing using the Tab key.

Improved Stability: Version XT 6 is noted for being more stable and less buggy than its predecessor, XT 5.

No Commercial Restrictions: Unlike many "free" programs, it can be used for commercial projects without license fees. Availability and Licensing

While the software is legally free, obtaining it can be difficult because the original download pages are often broken.

How to get a key: According to user reports, you can obtain a license key by contacting TurboCAD Support via their website’s chat popup and specifically requesting an XT 6 key.

Usage Limits: Licenses may be valid for one year and typically allow installation on up to two computers. Comparison with Other CAD Tools

vs. AutoCAD LT: DoubleCAD XT 6 is often cited as more versatile because it supports more file formats and offers some 3D viewing capabilities (though you cannot rotate 3D files).

vs. TurboCAD: While both share the same codebase, DoubleCAD focuses on an AutoCAD-like 2D workflow, whereas TurboCAD is a broader 3D modeling solution.

DoubleCAD XT 6 is a free, professional-grade 2D CAD software developed by IMSI Design. Known for its intuitive interface and strong compatibility with AutoCAD DWG files, DoubleCAD XT 6 offers powerful drafting tools, 3D printing preparation features, and advanced editing capabilities — making it a popular choice for architects, engineers, and hobbyists seeking a cost-effective alternative to paid CAD solutions.

Introduction

DoubleCAD XT 6 is a powerful and versatile computer-aided design (CAD) software that has been widely used by architects, engineers, and designers for creating detailed and precise 2D and 3D models. Developed by IMSI/Design, DoubleCAD XT 6 is the latest version of the software, which offers a range of innovative features and tools to streamline the design process. In this essay, we will explore the key features and benefits of DoubleCAD XT 6, and discuss its applications in various industries.

Key Features of DoubleCAD XT 6

DoubleCAD XT 6 is designed to provide users with a comprehensive set of tools for creating, editing, and managing CAD designs. Some of the key features of the software include:

Benefits of DoubleCAD XT 6

DoubleCAD XT 6 offers a range of benefits to users, including:

Applications of DoubleCAD XT 6

DoubleCAD XT 6 has a wide range of applications in various industries, including:

Conclusion

DoubleCAD XT 6 is a powerful and versatile CAD software that offers a comprehensive set of tools for creating, editing, and managing CAD designs. Its intuitive interface, precise modeling and drafting tools, and collaboration and sharing features make it an ideal choice for architects, engineers, and designers. With its wide range of applications and benefits, DoubleCAD XT 6 is a valuable tool for anyone involved in design and engineering.

Specifications:

Overall, DoubleCAD XT 6 is a robust and feature-rich CAD software that is designed to meet the needs of professionals and hobbyists alike. Its comprehensive set of tools, intuitive interface, and collaboration and sharing features make it an excellent choice for anyone looking to create detailed and precise CAD designs.

DoubleCAD XT 6 is a free, professional-grade CAD software designed for architectural drafting, mechanical design, and general illustration. Unlike "viewers" or stripped-down free tools, DoubleCAD XT 6 is a fully functional application. It was originally developed as a direct competitor to AutoCAD LT, offering similar 2D drafting tools plus robust 3D modeling capabilities that AutoCAD LT lacked.

The "XT" stands for "Extended Technology." Version 6 represented a major leap forward, introducing better GPU acceleration, improved 3D ACIS® modeling, and a highly customizable user interface.

Let’s walk through a basic workflow to demonstrate the power of DoubleCAD XT 6.

Step 1: Set Units Go to Format > Units. Set to Architectural (Feet/Inches) or Decimal (Metric).

Step 2: Draw Walls Activate the Draw Walls tool. Click to start a wall, type 20' (20 feet), press Enter. Turn a corner, type 15'. Close the rectangle.

Step 3: Insert Doors/Windows Click the Door tool. Select the left wall. The software automatically trims the wall line and places the door with an arc swing.

Step 4: Switch to 3D Click the 3D Orbit tool. Drag your mouse. You will see your 2D floor plan pop up into extruded 3D walls automatically.

Step 5: Dimension & Export Use the Linear Dimension tool to mark lengths. Go to File > Save As and choose AutoCAD 2018 DWG to send to a client or contractor.

For non-interactive batch tasks:

LAYER SET 0
LINE 0,0 100,100
ZOOM E
SAVEAS "C:\drawing.dwg"
QUIT

Version 6 includes specific tools for construction:

Because DoubleCAD XT 6 is an older version (circa 2016-2018), it runs exceptionally well on modern hardware.

Minimum Requirements:

Installation Tip: Always download DoubleCAD XT 6 from the official IMSI Design archive or a trusted repository like CNET or MajorGeeks. Avoid third-party "crack" sites as version 6 is legally freeware.