Resources
Getting Started
Welcome to Eureka3X! This section covers everything you need to know to get up and running with your digital twin simulation.
Quick Start Guide
Learn the basics of setting up your machine, loading tools, and running your first simulation.
Read GuideInterfacing Fusion360 with Eureka3X
Integration Guide
Step-by-step instructions for installing and configuring the Eureka add-in for Fusion360.
Read GuideArticles & Insights
Read the latest articles, case studies, and deep dives into Eureka3X technology.
Haas VF-2 G-Code Simulator
Verify Your Program Before It Touches the Spindle — Eureka 3X Pro.
Read ArticleFanuc Robodrill G-Code Simulator
Verify Macro & Subprogram Code Before It Runs — Eureka 3X Pro.
Read ArticleAccurate CNC Cycle Time for Quoting | Stop Losing Money on Bad Estimates
Your CAM's cycle-time estimate is optimistic — and every quote built on it either loses you the job or loses you money.
Read ArticleDebug G-Code the Way Developers Debug Code | Breakpoints, Step-Through & Controller State
Stop troubleshooting G-code by crashing the machine. Eureka 3X Pro brings real debugging to CNC.
Read ArticleHeidenhain Program Simulator | Verify TNC Programs Off-Machine
A controller-accurate 3-axis simulator for the Heidenhain TNC control. Verify your real Heidenhain program off-machine.
Read ArticleSinumerik G-Code Simulator | Verify Siemens Programs Before They Run
A controller-accurate 3-axis simulator for the Siemens Sinumerik control. Verify the real Siemens program before it touches your machine.
Read ArticleVerifying AI-Generated G-Code | Trust, but Verify Before It Runs
AI can write G-code now — but it has no model of your machine, your limits, or your control. Eureka 3X Pro verifies AI-generated programs.
Read ArticleFusion 360 Machine Simulation vs. Eureka 3X Pro
What Your CAM Simulator Actually Verifies (and What It Doesn't).
Read ArticleCNC Simulation for Precision Machining Subcontractors
Discover how to protect your tight margins immediately with Eureka3X and scale seamlessly as you grow without costly crashes.
Read ArticleCNC Mill Programming: A Practical Guide for G-Code on Machining Centers
Learn CNC mill programming from the ground up. Understand G-code structure, coordinate systems, and tool compensation for 3-axis machining centers. Includes working examples.
Read ArticleG84 Tapping Cycle — How to Program Rigid Tapping on a CNC Mill
Learn how to program the G84 tapping cycle on a CNC machining center. Understand spindle synchronization, feed rate calculation, and common mistakes to avoid.
Read ArticleG73 and G83 Peck Drilling Cycles — Deep Hole Drilling on CNC Mills
Learn when to use G73 chip-breaking vs G83 full retract peck drilling on a CNC machining center. Includes syntax, examples, and Q-value guidance.
Read ArticleCNC M Codes — Machine Functions in G-Code Programs
Understand CNC M codes for spindle control, coolant, tool changes, and program flow. Covers Fanuc, Haas, and common dialects with working examples.
Read ArticleCutter Compensation G41 and G42 — Program to the Part, Not the Tool
Learn how to use G41 and G42 cutter radius compensation on a CNC mill. Program to the part profile and let the controller offset for tool radius. Includes examples and common pitfalls.
Read ArticleG90 and G91 — Absolute vs Incremental Positioning in CNC Milling
Understand the difference between G90 absolute and G91 incremental positioning in CNC mill programming. Learn when to use each mode and avoid common errors.
Read ArticleG98 and G99 — Initial Plane vs R-Plane Return in Canned Cycles
Understand the difference between G98 initial plane return and G99 R-plane return in CNC canned cycles. Learn when each is appropriate and how to avoid clearance errors.
Read ArticleCNC Canned Cycles — Drilling, Tapping, and Boring on Machining Centers
Complete guide to CNC canned cycles for milling. Covers G81 drilling, G83 peck drilling, G84 tapping, G85/G86 boring, and how to use G80, G98, G99.
Read ArticleG28 — Reference Return in CNC Milling
Learn how G28 reference return works on CNC machining centers. Understand the intermediate point, why G91 G28 Z0 is standard practice, and how to use G28 safely.
Read ArticleM98 and M99 — Subprograms in CNC Milling
Learn how to use M98 and M99 subprograms in CNC milling. Reduce program length, handle repeated features, and structure complex programs with subprogram calls.
Read ArticleCNC Datums and Work Offsets — G54, G55, G56, G57 Explained
Learn how CNC work offsets and datums work on machining centers. Understand G54–G59, how to set them, and how to use multiple offsets in a single program.
Read ArticleFanuc Canned Cycles — Drilling, Tapping and Boring on Fanuc Controllers
Complete guide to Fanuc canned cycles for CNC milling. Covers G81, G73, G83, G84, G85, G86, G76 with Fanuc-specific syntax, parameters, and behavior.
Read ArticleHaas G-Code — What's Different from Standard Fanuc
Learn what makes Haas G-code different from Fanuc and standard CNC programming. Covers Haas-specific M codes, tool changes, canned cycles, and NGC controller features.
Read ArticleTool Length Compensation — G43, G44, and G49 on CNC Mills
Understand G43 tool length compensation on CNC machining centers. Learn how H offsets work, the difference between G43 and G44, and how to avoid Z-axis errors.
Read ArticleCNC Variables and Macro Programming — Parametric G-Code on Machining Centers
Learn CNC macro programming with variables, arithmetic, and conditional logic. Covers Fanuc custom macro B, common variable types, and practical examples.
Read ArticleCNC Coordinate Systems — Machine Zero, Work Zero, and Local Offsets
Understand CNC coordinate systems on machining centers. Learn the difference between machine zero, work zero, and local coordinate systems, and how they interact in G-code programs.
Read ArticleG-Code for Fusion 360 — How to Verify CAM Output Before Machining
Learn how to verify Fusion 360 G-code output before running it on the machine. Understand what Fusion's simulator doesn't catch and how Eureka3X fills the gap.
Read ArticleAI-Generated CNC Programs — How to Verify Them Before Running
AI tools can generate G-code programs, but they introduce new failure modes. Learn what to check in AI-generated CNC programs and how to verify them before machining.
Read ArticleCNC Simulation vs Dry Run — Which One Actually Protects Your Machine
Compare CNC simulation and dry run as methods for verifying NC programs. Understand what each catches, what each misses, and why simulation is the safer choice.
Read ArticleParametric Programming in CNC
Why it's the hardest G-code to verify and how to do it right. Validate parametric programs with the same certainty you would apply to any other NC code.
Read Article"The G-Code Looks Correct, But the Machine Does Something Wrong" — Here's Why
Discover the structural gap between CAM simulation and machine execution, and how to close it before it becomes a crash.
Read ArticleG43 Tool Length Compensation: Why It's the Most Dangerous Line in Your CNC Program
Find out where invisible G43 errors hide and how to catch them before the machine does.
Read ArticleCNC Tool Change Crashes: Why M06 Is the Riskiest Moment in Your Program
Learn exactly what happens during a tool change, where each phase can fail, and why simulation is the only verification method.
Read ArticleHow to Debug G-Code: Why Offline Simulation Is the Only Method That Actually Works
Close the gap entirely before the program ever reaches the machine and eliminate the physical sensation of not knowing.
Read ArticleCNC Post-Processor Problems: Why Your G-Code Looks Wrong
How to verify your G-Code before it reaches your machine and catch errors introduced by the post-processor.
Read ArticleWhen Your Best CNC Programmer Can't Be Everywhere
How G-code simulation protects precision machining subcontractors from their own skills gap and preserves tacit machining knowledge.
Read ArticleAS9100 and CNC Simulation
How G-code verification becomes process conformance evidence — and why precision machining subcontractors should care before the next audit.
Read ArticleDry Run vs CNC Simulation: Why Dry Run Is Not Enough
Every experienced machinist has run a dry run before cutting metal. But dry runs still cause machine crashes. This article explains why, and what to do instead.
Read ArticleFANUC Robodrill Post Processor: Verify Your G-Code Before It Reaches the Machine
Your post processor translates CAM toolpaths into G-code your Robodrill can execute. Here is why simulating the posted G-code is the only way to be sure.
Read ArticleCNC Work Offset Errors: G54, G55, G56 Problems and How to Prevent Them
A wrong work offset is one of the most silent and destructive errors in CNC machining. This article explains why G5x errors are hard to detect, and how to eliminate them.
Read ArticleCNC Tool Change Problems: ATC Errors, Wrong Tool, and Tool Change Collisions
Tool change errors are one of the leading causes of CNC machine crashes. This article covers the main failure modes and how G-code simulation catches each one.
Read ArticleYour Program Didn't Crash. It Still Made Scrap.
A program can pass every collision check and still make the wrong part — a gouge, a missed feature, a bad-offset cut. Eureka 3X Pro compares the simulated result against your CAD model to catch program-caused scrap before you cut. 30-day free trial, no credit card required.
Read ArticleRigid Tapping Not Activated: Missing M29 and the Stripped Threads That Follow
A tap cycle that runs without rigid mode engaged strips threads and snaps taps — and it never crashes, so crash detection never sees it. Eureka 3X Pro emulates the control so a missing M29 or wrong tapping mode shows up before you cut. 30-day free trial, no credit card required.
Read ArticleWrong Units or Decimal Format: The G-Code Error That Puts You Off by a Factor of 1000
An inch/metric mix-up or a decimal-format mismatch can scale your whole program by 1000 — a part that comes out wildly oversized, undersized, or straight into a crash. Eureka 3X Pro runs the real program on a controller-accurate twin so the error is obvious before you cut. 30-day free trial, no credit card required.
Read ArticleThe Most Common Siemens Sinumerik Programming Mistakes
Siemens doesn't run generic G-code — it runs CYCLE calls, frames, D-offsets and R-parameters, each with its own way to go wrong. Here are the Sinumerik mistakes that cause the most crashes and scrap on 3-axis mills, and how controller-accurate verification catches them. 30-day free trial, no credit card required.
Read ArticleThe Most Dangerous Fanuc Canned Cycle Mistakes
Canned cycles pack a lot of behavior into one line — which is exactly why one wrong parameter causes a crash or a scrap part. Here are the 10 Fanuc canned-cycle mistakes that bite most often, and how controller-accurate verification catches them before you cut. 30-day free trial, no credit card required.
Read ArticleWrong Retract Mode (G98 vs G99): The Canned-Cycle Mistake That Drives the Tool Through Your Clamp
G99 retracts to the R plane between holes — fine on open stock, a crash waiting to happen when a clamp stands above it. Eureka 3X Pro runs the real canned cycle on a controller-accurate twin so a wrong G98/G99 shows up before the tool clips a fixture. 30-day free trial, no credit card required.
Read ArticleThe Most Common Heidenhain TNC Programming Mistakes
Heidenhain programs in Klartext and cycles, driven by Q-parameters and TOOL CALL — each with its own failure mode. Here are the TNC mistakes that cause the most crashes and scrap on 3-axis mills, and how off-machine controller-accurate verification catches them. 30-day free trial, no credit card required.
Read ArticleThe G28 Trap: How a 'Go Home' Command Drills Straight Into Your Part
G28 doesn't go straight home — it routes through an intermediate point, and in absolute mode that point can send the tool plunging into the part or fixture. It's one of the most common 3-axis crash sources. See how controller-accurate verification catches it before you cut. 30-day free trial, no credit card required.
Read ArticleThe Blind Absolute Z Rapid: Why 'G00 Z-100' Is the Most Dangerous Line in CNC
A rapid to an absolute Z with the wrong offset, missing tool length, or part-zero on the table drives the tool to full-speed depth into the part or fixture. It's the classic crash — and controller-accurate verification catches it before the spindle moves. 30-day free trial, no credit card required.
Read ArticleForgotten Modals: How Leftover State Crashes the Next Move
G-code is modal — a mode set once stays active until changed. A leftover G91, an un-cancelled G93 inverse-time feed, a stale G40/G49, and the next block does something you never intended. Controller-accurate verification tracks modal state so these show up before you cut. 30-day free trial, no credit card required.
Read ArticleCutter Comp Lead-In Errors: How G41/G42 Gouges the First Corner
Cutter compensation can't switch on in the middle of a cut. A missing or too-short lead-in gouges the part, over-cuts the first corner, or throws a comp alarm. Controller-accurate verification shows how the control applies G41/G42 before you cut. 30-day free trial, no credit card required.
Read ArticleIs Every Cut Within the Tool's Limits? Cutting Conditions Verification in Eureka 3X Pro
Your program runs — but is every segment inside the spindle's power and torque, the tool's feed and chip load? Eureka 3X Pro checks each cutting segment against limits you define per tool, flagging what's over the edge and what's running far too conservatively. 30-day free trial, no credit card required.
Read ArticleG-Code Assistant: Parametric Templates
Discover how to leverage parametric templates within the G-Code Assistant to streamline your programming workflow and reduce manual errors.
Read ArticleShare the Simulation, Not a Setup Sheet: The Free Eureka Viewer
Verify a job in Eureka 3X Pro, then let anyone open the actual simulation — free — to review it. The Eureka Viewer turns 'trust me' into a shared visual anyone on the team can inspect.
Read ArticleSpindle Damage After a Crash: What to Check Before You Run Again
You crashed the machine — is the spindle damaged? A practical guide to checking spindle runout, bearing damage, and noise after an impact.
Read ArticleYour 2D Simulation Said It Was Fine — Then the Tool Buried Itself
A top-down or 2D graphic checks where the tool goes in X and Y — and is blind to a wrong Z. See why 3D verification is how you catch the Z error the 2D check can't see.
Read ArticleAutomating Eureka 3X with Python
Verify programs without touching the UI: open a project, load the setup, simulate, and read the results — from a script via the COM API.
Read ArticleSupport & Help
Comparison Matrix
Compare Eureka3X features with the full Enterprise edition and view the list of supported CNC controllers.
View MatrixFrequently Asked Questions
Answers to the most common questions about Eureka3X, including system requirements, CAD/CAM compatibility, and features.
View FAQs