How do you draw a spiral curve in autocad?

You can create a spiral curve between any two points, such as the ends of a line or even two other curves. Click the “Alignment” tab and choose “Modify.” Click “Geometry Editor.” Locate the “Alignment Layout Tools” toolbar, and choose “Free Spiral-Curve-Spiral (Between Two Entities).”

How do I draw a curved line in Autocad?

To Draw a Line and Arc Polyline

  1. Click Home tab Draw panel Polyline. Find.
  2. Specify the start point of the polyline segment.
  3. Specify the endpoint of the polyline segment. Switch to Arc mode by entering a (Arc) at the Command prompt. …
  4. Specify additional polyline segments as needed.
  5. Press Enter to end, or enter c to close the polyline.

How do you draw a spiral curve in Civil 3d?

Click Alignment tab Modify panel Geometry Editor . On the Alignment Layout Tools toolbar, click Free Spiral-Curve-Spiral (Between Two Entities). Select the entity from which you want to add the spiral-curve-spiral. Select the entity to which you want to add the spiral-curve-spiral.

How do you make a 3d spiral in Autocad?

A helix is an open 2D or 3D spiral.

  1. Click Home tab Draw panel Helix. Find.
  2. Specify the center point for the base of the helix.
  3. Specify the base radius.
  4. Specify the top radius or press Enter to specify the same value as the base radius.
  5. Specify the height of the helix.
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How can you make a spring spiral or screw thread?

How can you make a spring, spiral or screw thread in Autocad?

  1. Start a new drawing using acad3d.dwt as the template. …
  2. Type plan to see the view from the top.
  3. Create a new layer, object, and make it blue.
  4. Start the POLYLINE command, specify a start point anywhere in the middle of the screen, and draw segments as follows:

How do you smooth curves in AutoCAD?

To Smooth Feature Lines

  1. Click Modify tab Edit Geometry panel Smooth Find.
  2. Select the feature line(s) to smooth or straighten.
  3. Do one of the following: Press Enter to smooth the lines. Enter Straighten to straighten lines that were previously smoothed.

How do you find the spiral curve?

Formulas for Spiral Curves

  1. Distance along tangent to any point on the spiral: …
  2. At L = Ls, Y = Yc, thus, …
  3. Offset distance from tangent to any point on the spiral: …
  4. At L = Ls, X = Xc, thus, …
  5. Length of throw: …
  6. Spiral angle from tangent to any point on the spiral (in radian): …
  7. At L = Ls, θ = θs, thus,

How do you add a curve to an alignment in Civil 3d?

To add a fixed curve (with three points)

  1. Click the alignment. Click Alignment tab Modify panel Geometry Editor Find.
  2. On the Alignment Layout Tools toolbar, click Fixed Curve (Three Point).
  3. Specify the start point.
  4. Specify the second point.
  5. Specify the next point. Tip: Edit the curve by moving any of the three points.

What is sweep command in AutoCAD?

Creates a 3D solid or 3D surface by sweeping a 2D object or subobject along an open or closed path. Find. Open-ended objects create 3D surfaces, while objects that enclose an area can be set to create either 3D solids or 3D surfaces.

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How do you cad a spring?

To draw a Spring in AutoCAD using the HELIX command, you need to:

  1. Specify center point of base:
  2. Specify base radius or [Diameter] :
  3. Specify top radius or [Diameter] :
  4. Specify helix height or [Axis endpoint/Turns/turn Height/tWist] :

What is Helix command in AutoCAD?

Use a helix as a sweep path for the SWEEP command to create springs, threads, and circular stairways. … During a drawing session, the default value for the base radius is always the previously entered base radius value for any solid primitive or helix. Diameter (base) Specifies the diameter of the base of the helix.

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