Guides
Can You Put Two M-Codes on the Same Line of G-Code?
The one-M-per-block rule is the historical default; some controls allow more under conditions. Why the restriction exists, and the rule that is always safe.
Lawrence Arya··4 min
Guides
Does G-Code Need Spaces Between Letters? No, and Here's Why
G-code parses by letter-number words, so G1X50F200 and G1 X50 F200 are the same block on most controls. The tape-era reason, and where spacing still matters.
Lawrence Arya··4 min
Guides
G-Code Syntax Checker for ChatGPT Output: The Real Stack
No universal G-code syntax checker exists, because syntax is dialect-specific. The working stack: viewer, strict interpreter, highlighting, and a human pass.
Lawrence Arya··5 min
Guides
How to Add Comments in G-Code: Parentheses, Semicolons, Rules
G-code comments come in two styles: parentheses mid-line and semicolon-to-end-of-line, with dialect rules, no nesting, and a few traps worth knowing.
Lawrence Arya··4 min
Code reference
Mach4 G-Code Syntax vs Mach3: What the Rewrite Changed
Mach4 is a ground-up rewrite of Mach3, but the G-code syntax stayed standard-shaped. What changed is the architecture, scripting, and plugins, not the language.
Lawrence Arya··4 min
Code reference
G-Code Syntax vs C++: The Differences That Actually Teach
G-code and C++ differ in everything visible: words vs statements, modal state vs scope, no compiler safety net. Mapping the gap teaches both sides something.
Lawrence Arya··5 min
Practice
Is G-Code Case Sensitive? The Short Answer and the Long Habit
Most controls treat g01 and G01 identically: G-code is broadly case-insensitive for words. The exceptions, the uppercase convention, and where case bites.
Lawrence Arya··4 min