How to Use Spline in AutoCAD 2016?

Understanding the Spline Tool in AutoCAD 2025

Introduction to the Spline Tool

The Spline tool in AutoCAD is essential for creating smooth, curved lines that pass through specified points. This tool allows for complex shapes to be drawn easily, making it a favorite among designers and engineers for both aesthetic and functional applications.

Getting Started with the Spline Tool

To effectively utilize the Spline tool in AutoCAD, follow these detailed steps:

1. Access the Spline Command:

   • Open AutoCAD 2025, and make sure the workspace is set up for drawing.
   • Type the command SPLINE into the command line and hit Enter.

2. Defining Points:

   • Click on the drawing area to specify the initial point for your spline.
   • Continue to click at various points where you want the spline to curve. These points will be known as fit points.
   • After placing all desired points, right-click and select ‘Enter’ to finish the spline.

3. Editing the Spline:

   • To make adjustments to an existing spline, use the SPLINEDIT command.
   • Select the spline you wish to alter. Various options such as adding or removing points, refining the spline, or changing its type will be presented.

Converting Spline to Polyline

A common need is to convert a spline into a polyline for easier manipulation:

1. Using SPLINEDIT for Conversion:
   • Type SPLINEDIT into the command line and press Enter.
   • Select the spline you wish to convert.
   • Once selected, type P for polyline conversion and hit Enter.
   • Specify the desired precision for the conversion, which can range from 0 to 99, and confirm your choice.

Making Spline Thicker

If you want to increase the width of a spline, remember that you first need to convert it to a polyline:

1. Using PEDIT Command:
   • Enter PEDIT in the command line and select your spline.
   • Convert it to a polyline, and then you can set a global width for the polyline, thereby increasing the thickness.

Adding Points to an Existing Spline

You can add points to enhance the shape of your spline:

1. Utilizing SPLINEDIT:
   • Launch the SPLINEDIT command.
   • Choose the spline to which you want to add points.
   • Select the Add option, and click on the position within the drawing to place the new control point.

Understanding Object Snap (Osnap)

Osnap helps you accurately select points on objects while drawing:

• Activate Osnap by right-clicking the Osnap icon in the status bar or typing OSNAP in the command line.
• Use specific snaps like ‘Endpoint’, ‘Midpoint’, or ‘Nearest’ to ensure precision when working with splines.

Working with Exploded Objects

The capability to explode a spline requires converting it to a polyline first:

1. Exploding a Polyline:
   • Following the conversion via SPLINEDIT, you can initiate the EXPLODE command.
   • Select the newly created polyline, and the software will break it back into its original segments.

Joining Polylines and Splines

To combine different shapes like polylines and splines:

1. Using the Edit Polyline Command:
   • Activate the Edit Polyline feature from the Modify panel.
   • Select the desired polyline or spline.
   • Press j to join and select the other end segment to complete the join.

FAQs

1. Can I create complex curves with the Spline tool?
Yes, the Spline tool is designed to create complex curves easily by allowing you to define multiple fit points, enabling intricate shapes.

2. What should I do if my spline isn’t appearing as desired?
Make sure to check your control points; adjust them using the SPLINEDIT command to refine the spline’s shape.

3. Is there a way to ensure my spline follows the exact curvature I need?
Utilizing the fit points effectively along with the Refine option in the SPLINEDIT command can help achieve the desired curvature and accuracy for your spline in AutoCAD.