Practice
How to Read a G-Code Print in an Interview Test
Handed a program printout in an interview? Read it in a fixed order: units and mode first, then setup, then the moves. Here is the method that keeps you calm.
Lawrence Arya··5 min
Guides
How to Safely Test a G-Code Program: Beginner Concepts
The checks beginners learn before running a new program: dry run, single block, rapid override, and a graphics preview, explained at a concept level.
Lawrence Arya··5 min
Practice
Is There a Game to Learn G-Code?
There is no big 'G-code video game,' but game-style recall drills exist and work. Here is what is actually available and what to look for.
Lawrence Arya··5 min
Practice
ITI CNC Practical Exam: What to Study and Practice
An ITI CNC practical exam tests reading and running a program: the common G-code and M-code, setup, and safe operation. Here is what to study, not answers to copy.
Lawrence Arya··5 min
Practice
Journeyman Machinist G-Code Test Questions: What to Expect
A journeyman-level G-code test goes beyond the basics into offsets, compensation, canned cycles, and reading a full program. Here is the deeper scope to study.
Lawrence Arya··5 min
Practice
GRBL Laser G-Code: Practice Exercises for Beginners
GRBL laser G-code is a small, friendly subset: G0/G1 for moves, M3/M4/M5 for the laser, and S for power. Here are simple exercises to learn it by doing.
Lawrence Arya··5 min
Code reference
M98 and M99: Subprogram Call and Return, With an Example
M98 calls a subprogram and M99 returns from it, letting you reuse a block of code. Here is how the pair works on Fanuc-style controls, with an example.
Lawrence Arya··5 min
Practice
Machinist Apprentice Study App: Why Dark Mode Helps
Dark mode is more than a look for a machinist study app: it suits dim shops, night shifts, and tired eyes. Here is what else an apprentice app should have.
Lawrence Arya··5 min
Guides
Mesa Card + LinuxCNC: The G-Code Is Still Standard
A Mesa card is hardware that connects LinuxCNC to your machine. It changes the wiring and config, not the G-code. Here is what to practice for the program side.
Lawrence Arya··5 min
Practice
The Most Basic G-Code Program Example, Explained Line by Line
A complete but minimal G-code program, explained one line at a time, so you can see how the common codes fit together. A teaching example, not a runnable file.
Lawrence Arya··5 min
Practice
NIMS CNC Operator Test: What It Covers and How to Study
What the NIMS CNC operator credential actually tests, the G-code knowledge it expects, and an honest study plan. We do not reproduce real exam questions.
Lawrence Arya··5 min
Practice
Online CNC Practice Tests for NIMS Prep: How to Self-Test
Practice testing is one of the most effective study methods there is. Here is how to build an online practice-test loop for NIMS CNC prep, the right way.
Lawrence Arya··5 min