Novanta Laser Engraving: How to Choose the Right Project Files (And Avoid My $2,500 Mistake)

Let's Get One Thing Straight: There's No "Perfect" File Format

If you're looking for the single, magical file type that works for every Novanta laser engraving job, I've got bad news: it doesn't exist. I learned this the expensive way—about $2,500 worth of rework and wasted acrylic sheets in my first two years handling orders.

My name's Alex, and I'm the production manager handling laser engraving and cutting orders for a mid-sized signage company. I've been at this for seven years. I've personally made (and documented) 23 significant file-related mistakes, totaling roughly $4,800 in wasted budget and materials. Now I maintain our team's pre-flight checklist to prevent others from repeating my errors.

The core mistake I see—and made myself—is treating all projects the same. Sending a .DXF for a detailed photo engraving on glass? Disaster. Using a high-res .PNG for a vector cut on a Novanta fiber laser? You'll get a slow, burnt mess. The right choice isn't about the "best" format; it's about matching the file to your specific scenario.

"In September 2022, I submitted a 50-piece acrylic nameplate order with embedded customer logos as high-resolution .JPGs. It looked perfect on my screen. The result came back fuzzy, with ragged edges on the text. All 50 items, $320 in material and machine time, straight to the trash. That's when I learned that raster images and vector cuts are a terrible mix."

So, let's break down the three main scenarios I encounter daily. Your situation probably fits one of these.

Scenario A: You're Engraving Photos or Complex Artwork (Raster Work)

When This Is You

You're working with photographs, shaded logos, grayscale images, or any design with continuous tones. Think portrait engravings on crystal, detailed artwork on anodized aluminum, or a company logo with gradients for a Novanta laser marking system. The laser is acting like a printer, dot-by-dot.

Your Best File Choices

For this, you need a raster image. The quality rule is simple: higher resolution almost always gives better results on a Novanta machine.

• Go-to Choice: .TIFF or high-bit .PNG. These are lossless formats. They don't compress the image data, so every pixel detail your Novanta photonics system can resolve is preserved. I use these for premium jobs on glass or metal.
• Practical Choice: High-Resolution .JPG. If you have to use a .JPG, make sure it's saved at maximum quality (low compression). A good ballpark is 300 DPI at the final output size. Never, ever use a tiny .JPG you pulled from a website.

Here's something vendors won't tell you: the DPI (dots per inch) setting in your file needs to match your laser's capability. A Novanta bedford series galvo scanner might have a different optimal DPI than a gantry CO2 system. Always ask your operator or check the manual for the recommended engraving resolution.

My Mistake to Avoid: I once used a 72 DPI .PNG for a large plaque. It looked okay on my monitor, but the engraving was pixelated and unprofessional. The surprise wasn't the machine's fault—it was my low-res file. Now, our checklist mandates a 300 DPI minimum for any raster engraving.

Scenario B: You're Cutting Out Shapes or Engraving Crisp Outlines (Vector Work)

When This Is You

You're cutting acrylic sheets to shape, making precise stencils from MDF, or engraving the clean outlines of a logo or text. The laser is following a path, like a plotter. This is where Novanta laser cutters for acrylic truly shine.

Your Best File Choices

For this, you need a vector file. These are made of mathematical paths, not pixels, so they scale to any size perfectly and give the laser a clear, sharp line to follow.

• Industry Standard: .DXF or .DWG. These are the universal handshakes between design software and laser cutters. They're reliable and almost always work. If you're sending files to an external shop using a Novanta machine, this is your safest bet.
• Also Excellent: .AI or .EPS (from Adobe Illustrator). These are native vector formats. They can carry more design information (like colors for different laser operations), but you must convert all text to outlines before sending. An un-outlined font on my computer might be a default font on yours, and the file will substitute it.
• Surprise Performer: .SVG. It's a web-friendly vector format that's become surprisingly robust for laser work. It's great for simpler shapes and is widely supported.

The best part of switching to clean vectors for our cutting jobs? Zero kerf miscalculations. We finally got interlocking pieces that actually fit.

Scenario C: You're Doing Both (Composite Work)

When This Is You

This is the most common—and trickiest—scenario. You have a design that combines a photo engraving (raster) and a cut-out outline (vector). Example: a wooden coaster with a engraved landscape picture inside a precisely cut circle.

Your Best File Choices

You can't use a single, simple file here. You need a format that supports both data types, or you need to provide two separate, aligned files.

• Best Practice: .PDF with Layers. Create a PDF where the raster image is on one layer and the vector cut lines are on another, clearly labeled (e.g., "ENGRAVE" and "CUT"). Most modern laser software can read PDF layers.
• Alternative: Package Files Together. Send a high-res .TIFF for the engrave and a .DXF for the cut, with clear instructions. Include a third, low-res .JPG as a visual reference for alignment. This is a no-brainer for clarity.

Critical Check: Make sure your cut line is set to a specific color (like red) and a hairline thickness (0.001 pt). A thick, black line will be engraved, not cut. I learned this after a batch of acrylic keychains were only scored, not cut through. That error cost $890 in redo plus a 1-week delay.

How to Figure Out Which Scenario You're In (A Quick Guide)

Still on the fence? Ask yourself these questions:

1. Does your design have shading, gradients, or photographic detail? If YES, you have raster elements (Scenario A or C).
2. Does your design need a perfectly smooth, scalable outline? If YES, you have vector elements (Scenario B or C).
3. Will the laser be cutting all the way through the material? If YES, you absolutely need vector cut lines (Scenario B or C).

If you answered yes to both 1 and 2 or 3, you're in Scenario C (Composite). That means you need a layered .PDF or file package.

Here's my final, practical tip—the one that's saved us the most headaches: Always include a "test square." In a corner of your file, include a small 1x1 cm square to engrave and a 1x1 cm square to cut. It gives the operator a instant check for power, speed, and focus settings before running your whole, expensive sheet of material. It's a five-second step that can save a $200 piece of specialty acrylic.

Bottom line: matching your Novanta laser engraving project files to the job isn't about memorizing formats. It's about understanding what the laser needs to do. Use this as your starting checklist, and you'll avoid the expensive school fees I already paid.