DXF & SVG Preflight Inspector, 72/96 DPI Scale Resizer & Laser Cut Time Calculator
DXF / SVG Preflight Inspector, DPI Scale Resizer & Laser Cut Time Calculator
sample-cnc-enclosure-panel.dxf
How This DXF/SVG Preflight & Laser Cost Calculator Works
Before sending a .DXF or .SVG vector file to a CO2 laser, fiber laser, or CNC router, operators must verify that all interior cutouts are closed polylines, no duplicate overlapping lines exist to cause double-burning, and the coordinate system matches 1:1 physical millimeters ($INSUNITS = 4). Our 100% client-side DXF/SVG Preflight Inspector parses your vector file locally in the browser, repairs 72 DPI (Adobe Illustrator), 96 DPI (Inkscape), and 25.4× (Inch-to-mm) scaling mismatches, and computes exact machine cycle time and unit material cost.
Governing Mathematical Equations (AutoCAD DXF R2000 ($INSUNITS=4) & W3C SVG 1:1 Millimeter Standard)
Sums through-cut travel time, vector scoring/creasing time, and laser pierce dwell delay for every closed contour.
Corrects the 33.3% or 25% dimensional shrinkage/expansion caused by unitless pixel SVG exports between Illustrator and Inkscape/LightBurn.
Combines gross material consumption (including a 15% skeleton nesting margin) with hourly machine operating rate.
Typical CO2 & Fiber Laser Cutting Speeds and Pierce Delays by Material
| Material & Caliper | Laser Source | Through-Cut Speed | Vector Score Speed | Pierce Delay |
|---|---|---|---|---|
| 3.0 mm Baltic Birch Plywood | 60W–80W CO2 | 18 – 28 mm/s | 80 – 120 mm/s | 0.25 s |
| 6.0 mm Baltic Birch / MDF | 80W–100W CO2 | 8 – 14 mm/s | 80 – 120 mm/s | 0.45 s |
| 3.0 mm Cast Acrylic (PMMA) | 60W–80W CO2 | 15 – 22 mm/s | 90 – 140 mm/s | 0.30 s |
| 1.5 mm Mild Steel Sheet | 1.5kW Fiber Laser | 45 – 65 mm/s | 120 mm/s | 0.20 s |
| 1.5 mm E-Flute Corrugated Board | 40W–60W CO2 / Knife | 35 – 55 mm/s | 95 mm/s | 0.10 s |
Apply These Calculations in 1:1 Parametric CAD Studios
Laser Cut Finger-Joint Box Generator (with Kerf & Thickness Compensation)
Laser Kerf & Slot Thickness Calibration Test Strip Generator
CNC Decorative Fretwork Lattice, Privacy Screen & Architectural Grille Panel Generator (DXF/SVG)
Frequently Asked Questions — DXF/SVG Preflight & Laser Cost
Is my uploaded .DXF or .SVG file sent to any external server?
No. All file parsing, polyline length integration, duplicate segment detection, and 1:1 re-export run 100% locally inside your browser using JavaScript FileReader.
Why did my SVG import at 75% or 133.3% of its real size in LightBurn or Cricut?
Adobe Illustrator historically exports unitless SVG user coordinates at 72 points per inch (72 DPI), whereas Inkscape 0.92+, CSS, and LightBurn default to 96 pixels per inch (96 DPI). Selecting 'Fix 72→96 DPI' or 'Fix 96→72 DPI' rescales every vertex and embeds explicit millimeter physical units.
How does the duplicate line detector prevent laser scorching?
When two adjacent parts share a common line segment, the laser beam cuts that path twice at full power—charring wood edges and melting acrylic. Our segment hash audit flags overlapping collinear vectors before you cut.