Preparing Text for Laser Cutting in Fusion 360: Video Guide

How to Prepare your Laser Cut Text in Fusion360

Table of Contents

In this tutorial, we’ll show you how to prepare text for laser cutting in Fusion 360. Follow along with the video or this article to learn how to prepare laser cut text in Fusion 360 in just a few simple steps.

Video Guide to Creating Laser Cut Text in Fusion 360

Before uploading your design to our Instant Quote tool, make sure to double check any text. In the below example, the word “LASER” includes two “islands” or areas of negative space; one in the letter “A” and “R”. These areas will not remain in the final design unless we bridge or join them to the main contour. Fortunately, this is an easy process in Fusion 360.

In this image, the word "LASER" includes two "islands" or areas of negative space; one in the letter "A" and "R".

Connect Negative Space to the Contour

We can use the Line Command in the Sketch Tab to connect the negative space to the rest of the contour.

Use dimensions and constraints to place the line geometry as desired. Use the dimension command to set the width. In this example, we set the width to 0.10″. Keep in mind this thickness must be reasonable for your material of choice and your material thickness.

Use the dimension command to set the width. In this example, we set the width to 0.10".

After this, it’s critical to trim away any unwanted lines so you’re left with a clean contour path. This includes the original geometry that makes up the A shape.

Break the Connection Link

In our example, the geometry was original projected so we’ll need to break the projection link. Working with text is one scenario where breaking the projection link is unavoidable.

To break the projection link, hold down the Shift key and select any pieces of geometry that need to be trimmed.

break the projection link in fusion 360

You can then select the Project Icon followed by the Delete key

The icon can be difficult to select, so we prefer to right click, followed by the Break Link option

Both options will remove the projection link turning the geometry into standard sketch geometry. This changes the line color from purple to black.

Activate the Trim Tool

Next we can activate the Trim Tool from the Modify dropdown.

The Trim Tool allows you to quickly select line segments to trim away to their nearest intersection. In the below example, we’ve selected the bottom and top.

Depending on your constraints and dimensions applied, you may get some warning messages in the lower right corner. This is nothing to worry about but you should be cautious and keep an eye on what you’re removing.

Our letter “A” is now ready to be cut on a laser cutter. Be sure to double check that it’s a closed profile but selecting the inside contour.

Repeat These Steps

You’ll need to repeat this process for all letters that include an “island” or negative space.

To summarize, we bridged the negative spaces in our text to make sure they could be cut by the laser cutter without losing the inner islands of specific letters.

Your Fusion360 design is now ready to be exported as a DXF for our laser cutter.

Check out our blog for more tutorials on Fusion 360.

Preflight Checklist

Before you upload your design files, be sure to go through our pre-flight checklist:

Get our latest articles in your inbox!

Start your first SendCutSend project today!

Upload your CAD design, or try one of our customizable part templates to get instant pricing on your custom laser cut parts. All delivered to your door in a matter of days.

We proudly use hardware by PEM

Flush Standoff, 4-40, .250" Zinc plus Clear Chromate

Aluminum: 5052, 6061, 7075 Steel: Mild, G30

SKUSO-440-8
Thread Size4-40 x .250″
Hole size in sheet (+0.003/-.0.000).168″
Minimum sheet thickness0.040″
Maximum sheet thickness.125″
Fastener materialSteel
Minimum distance hole C/L to edge0.230″
When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole..345″
Recommended panel materialSteel/Aluminum
Coating typeZinc
Length.250″
Aluminum material ranges (5052, 6061, 7075)0.040″-0.125″
Steel material ranges (CRS, HRPO, HR)0.048″-0.119″

We proudly use hardware by PEM

Flush Standoff, 4-40, .250" Passivated

Stainless Steel: 304, 316

SKUSO4-440-8
Thread Size440
Hole size in sheet (+0.003/-.0.000).166″
Minimum sheet thickness0.04″
Maximum sheet thickness.125″
Fastener material400 Stainless Steel
Minimum distance hole C/L to edge0.230″
When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole. Example shown with x2 of the same hardware..313″
Recommended panel materialStainless Steel
Coating typePassivated
Length.250″
304 Stainless Steel material ranges0.048″-0.125″
316 Stainless Steel material ranges0.060″-0.125″