How to Import DXF Into Fusion 360

Autodesk Fusion, often still called Fusion 360, is a popular 3D CAD program for makers, engineers and small shops. One of its most useful tricks is turning a flat DXF drawing into a 3D part. You import the outline, pick the shape and pull it up to the thickness you want. In a few minutes, a 2D drawing becomes a solid model.

This guide shows how to import a DXF into Fusion, fix the common problems, extrude it into 3D, and export DXF files back out for laser and CNC work.

Before you import: check the DXF

Open the DXF in our free online DXF viewer first. It takes seconds and does not upload the file.

• Measure a known edge with the ruler. Note the number and the units.
• Look at the layers. Notes, dimensions and borders on their own layers are easy to skip later.
• Press F to fit. If the drawing is a dot in the corner, a stray object sits far away. You will want to remove it.

If you are new to the format, read what is a DXF file.

Step 1: Insert the DXF

1. Open Fusion and create a new design, or open the design you want to add to.
2. Go to the Insert menu and choose Insert DXF.
3. In the dialog, click the plane selector and pick a plane, such as the XY plane. Or pick an existing sketch.
4. Click the file icon and choose your DXF.
5. Set the Units to match the drawing, such as millimeters or inches.
6. Choose whether to bring everything into one sketch or keep layers as separate sketches, if the option is shown.
7. Click OK.

The DXF appears as a sketch in the model tree on the left. Each line, arc and circle is now sketch geometry you can edit.

Another way: upload through the Data Panel

You can also upload a DXF through the Data Panel. Fusion turns it into its own design file. This is fine for a quick look, but inserting into a design gives you more control.

Step 2: Check the scale

Use the Inspect menu and the Measure tool. Click a known edge. Compare the result with what you measured in the viewer.

• If it is 25.4 times too big or small, you picked the wrong units. Undo and insert again with the right units.
• If it is off by another amount, check the designer’s notes for the intended size.

Getting the scale right now saves pain later. A part designed at the wrong size will be wrong in every export.

Step 3: Find closed profiles

Fusion can only extrude closed shapes, called profiles. When a sketch has a closed shape, Fusion shades it. If a shape that should be closed is not shaded, there is a gap somewhere.

How to find and fix gaps

1. Edit the sketch. Zoom in on the corners of the unshaded shape.
2. Look for line ends that almost touch but do not.
3. Drag one end onto the other to join them. Or use a coincident constraint to snap them together.
4. When the gap closes, the shape turns shaded.

Overlapping lines and tiny duplicate segments can also break profiles. Delete extra lines where you find them.

Step 4: Extrude into 3D

1. Finish the sketch.
2. Choose Extrude from the Create menu, or press E.
3. Click the shaded profiles you want to extrude. Holes inside a shape are left out on their own.
4. Type the thickness, such as 3 mm for plywood or 6 mm for plate.
5. Click OK.

Your flat outline is now a solid body. You can add fillets, chamfers, holes and other features just like any Fusion model.

Step 5: Clean up what you do not need

Text, dimensions, center marks and borders from the DXF often come into the sketch. Hide them or delete them from the sketch. Keeping the sketch clean makes later edits easier.

How to export a DXF from Fusion

Fusion is also a great way to make clean DXF files for laser and CNC work.

Export a sketch as DXF

1. Make sure the sketch only holds the lines you want to cut.
2. Right-click the sketch in the model tree.
3. Choose Save As DXF.
4. Pick a location and save.

Export a face of a 3D part

If you modeled a 3D part and want a DXF of its outline, create a new sketch on the face you want. Fusion projects the edges of that face into the sketch. Then save that sketch as DXF.

Export a sheet metal flat pattern

For sheet metal parts, create a flat pattern first. Then right-click the flat pattern and export it as DXF. Bend lines can be included or left out, depending on what your shop needs.

Check the exported DXF

Open the new DXF in our online DXF viewer. Measure a known edge to confirm the scale. Turn layers on and off to make sure nothing extra came along. Then send it to your laser or CNC software. See our LightBurn DXF guide for the next step.

Common Fusion DXF problems

The insert fails or nothing appears

The DXF may be binary, damaged or a renamed DWG. Save it again as an ASCII DXF. See DXF file not opening. If you have a DWG, read how to convert DWG to DXF.

The sketch is very slow

Big DXF files with hatches, text and thousands of lines make sketches heavy. Delete what you do not need before you start modeling. Or clean the DXF in a CAD program first.

Profiles will not shade

There are gaps, overlaps or duplicate lines. Zoom in and fix them as described above.

Splines come in wavy or broken

Some programs export curves poorly. If smooth curves matter, ask the designer for a better export, or redraw key curves with arcs.

The part is in the wrong place

The DXF may have been drawn far from the origin. Use the Move tool on the sketch or the body to bring it closer to 0,0.

Tips for cleaner DXF imports

• Clean the DXF before import. Delete notes, dimensions and title blocks in a CAD program or in Inkscape first.
• Import onto a fresh component. Make a new component, activate it, then insert the DXF. This keeps your design tidy.
• Rename the sketch right away, such as Outline from DXF, so you can find it later.
• Hide sketch constraints if a big DXF looks cluttered.
• Save often. Large imports can be slow, and a crash costs time.

Is Fusion free?

Autodesk offers a free personal use license for Fusion, with some limits on features and the number of active documents. Businesses need a paid license. Check Autodesk’s current terms before you sign up, since they change from time to time.

Real example: a phone stand from a free DXF

You download a free phone stand DXF made for 6 mm acrylic. You open it in the viewer and measure the base at 90 mm. You insert it into Fusion on the XY plane in millimeters. Two profiles do not shade, so you zoom in, find tiny gaps at two corners and close them. You extrude everything 6 mm. Now you can see the parts in 3D and use joints to check that the slots line up. One slot is a little tight for your acrylic, so you widen it in the sketch by 0.2 mm. You save the sketch as DXF, check it in the viewer, and send it to the laser.

DXF in, DXF out: a simple workflow

Many makers use Fusion as a middle step. They receive a rough DXF from a client or a free download, clean it in Fusion, and send a tidy DXF to the machine. The steps are always the same. Check the file in a viewer. Insert it at the right units. Close every profile. Extrude to see how parts fit. Fix any slots or holes in the sketch. Then save the sketch as a fresh DXF and check it once more. Following the same order every time turns a messy file into a reliable cut file in about ten minutes, and it builds a habit that catches mistakes before they cost material.

Frequently asked questions

Can Fusion 360 open DWG files?

Fusion can work with DWG through some routes, but DXF is the simplest path for sketches. Convert DWG to DXF first if you have trouble.

Why are my DXF lines not making a profile?

Profiles need closed shapes with no gaps or overlaps. Fix the corners and the shape will shade.

Can I import a DXF onto a face of a part?

Yes. Pick the face, or a sketch on that face, as the target plane when you insert.

How do I make a DXF for laser cutting from Fusion?

Right-click a sketch and choose Save As DXF. Keep only the cut lines in that sketch.

What other programs open DXF files?

See our list of programs that open DXF files.

Check your DXF before you model

Open the file in our free DXF viewer before you insert it into Fusion. A quick measurement and layer check saves time fixing scale and clutter later.