Lantek Expert is the industry standard for CNC programming in sheet metal cutting. Whether you are operating a laser, plasma, oxy-fuel, or waterjet machine, mastering this software is essential for reducing waste and increasing shop floor efficiency. This comprehensive tutorial covers everything from the initial interface setup to generating the final CNC code. Understanding the Lantek Interface
When you first open Lantek Expert, you will see a workspace designed for a logical workflow. The top ribbon contains the main modules: Drawing, Nesting, and Manufacturing. On the left, you will find the Explorer tree, which organizes your parts, sheets, and jobs. The central area is your primary CAD/CAM workspace where you will visualize your nests and toolpaths.
Before starting a project, ensure your Machine Configuration is correct. This tells Lantek the specific capabilities of your CNC machine, such as maximum sheet size, nozzle offsets, and gas types. Using the wrong machine profile can lead to errors in the final G-code. Step 1: Importing and Preparing Geometry
Most workflows begin by bringing in a CAD file. Lantek Expert supports DXF, DWG, and various 3D formats. Click on Import and select your file.
Clean the geometry. Use the "Clean" tool to remove duplicate lines or tiny gaps that could confuse the cutting head.
Define the Part Attributes. Assign the material type (e.g., Stainless Steel) and the thickness (e.g., 2mm).
Set the quantity. Specify how many units of this part you need for the current production run. Step 2: Mastering the Nesting Module
Nesting is where Lantek saves you money by fitting as many parts as possible onto a single sheet of metal.
Manual Nesting: Drag and drop parts onto the sheet. Use the arrow keys to rotate parts. This is best for small jobs or odd-shaped remnants.Automatic Nesting: Click "Automatic Nesting" to let the Lantek algorithm calculate the best layout. You can set the "Nesting Quality" to high for complex shapes to minimize "skeletal" waste.Common Line Cutting: To save even more time and gas, use common line cutting. This allows the machine to cut the shared edge of two parts with a single pass. Step 3: Applying Machining and Toolpaths
Once your parts are nested, you must tell the machine how to cut them. This is known as "Machining." lantek expert tutorial
Lead-ins and Lead-outs: These are the entry and exit points for the torch. Ensure your lead-ins are placed on a straight edge or a corner to prevent "pitting" on the finished part.
Cutting Sequence: Use the "Sequence" tool to determine which parts are cut first. It is usually best to cut internal holes first, then move from the center of the sheet outward to prevent the metal from warping or shifting.
Micro-Joints: If you are cutting small parts, add micro-joints (tabs). These keep the parts attached to the skeleton so they don't tip over or fall into the scrap bin during the process. Step 4: Simulation and G-Code Generation
Never send a job to the machine without simulating it first. Lantek’s simulation tool shows a virtual representation of the cutting head moving across the sheet. Watch for potential collisions or inefficient rapid movements between cuts.
If the simulation looks good, click "Generate CNC." Lantek will translate your visual nest into a text-based G-code file specific to your machine's controller (such as Fanuc, Siemens, or Mazak). Final Tips for Efficiency
Save Remnants: If a job doesn't use a full sheet, use the "Save Remnant" feature. Lantek will catalog the leftover shape so you can nest smaller parts onto it later.
Update Tables: Regularly update your technology tables (feed rates and power settings) based on real-world results from your machine operator.
Use Layers: Keep your drawing clean by using different layers for marking/etching versus actual cutting.
By following this Lantek Expert tutorial, you can transform a raw DXF file into a precision-cut metal component with minimal material loss and maximum machine uptime. Lantek Expert is the industry standard for CNC
Lantek Expert is a specialized CAD/CAM software system designed to automate the programming of sheet metal cutting machines, such as laser, plasma, oxy-fuel, and waterjet, as well as punching machines. Tutorials for this software generally focus on transitioning from a raw design to a machine-ready NC (Numerical Control) file. Core Tutorial Modules Most comprehensive learning paths, such as the Lantek Cut Tutorial , are divided into several critical operational phases: Geometry Drawing and Importing
: Tutorials often start with creating shapes directly in the Lantek CAD module or importing external DXF/DWG files. Users learn to define "obrounds," circles, and complex contours using coordinate-based entry (e.g., entering specific X and Y values). Automatic and Manual Nesting
: A primary focus is "Nesting," the process of arranging parts on a metal sheet to minimize waste. Advanced tutorials cover: Automatic Nesting : Letting the software calculate the most efficient layout. Common Cut Nesting
: Arranging parts so they share a single cut line to save time and gas. Remnant Management
: How to define and save the "scrap" pieces of a sheet for future use. Machining and Technology Tables
: This involves assigning specific cutting parameters (speed, power, lead-ins) based on the material type and thickness. Tutorials demonstrate how to apply these automatically or manually through "Manual Contour Machining". Key Learning Objectives If you are following a Lantek Expert Reference Manual , you will typically encounter these practical exercises: Defining the Plate : Setting the dimensions and material of the stock sheet. Applying Micro-joints
: Learning to leave small tabs of metal so parts don't fall through the machine slats or tip up during the cut. Generating CNC Code
: The final step of "Post-processing," which converts the visual nest into the G-code language the machine understands. Punch-Specific Operations
: For punching machines, tutorials detail tool selection, nibbling patterns, and coordinate-specific tool hits. Official Resources and Updates Lantek Training : The company frequently releases updates (such as the Global Release 2019 onwards Step 7: Sending to Machine (DNC / USB / Network)
) that introduce more automated functionalities and better integration with manufacturing management standards. Documentation : Detailed workflows are found in the official Lantek Expert Cut Reference Manual
, which provides the technical foundation for all software interactions. on a specific process, such as automatic nesting importing DXF files
Machine Connection → Select COM port or IP → Send Program.Once imported, press Ctrl + G to open the Geometry validator. Look for:
Action: Click Auto-Heal. Lantek will merge collinear lines and close gaps smaller than your defined tolerance (usually 0.01mm). If it fails, use the Manual Chain tool to click on each segment until the outline turns solid blue (closed).
Never send code to the floor without simulating.
3D Simulation button (blue play icon).The "Red Zone" Warning: If Lantek highlights an area in red, it means Collision Detected. Go back to the Technology tab and increase the Micro-joint distance or change the Part exit point.
| Error | Likely Fix |
|-------|-------------|
| “Intersecting contours” | Repair DXF (overlapping lines) |
| “No tool assigned” | Map tool to hole size in Tool Library |
| “Post‑processor not found” | Copy .ppf file into Postprocessor folder |
| “Sheet too small” | Increase sheet size or enable part rotation |
Drawing a shape is not enough; the software must know what the shape represents.