Machsupport Forum

Mach Discussion => Mach4 General Discussion => Topic started by: Azalin on October 23, 2026, 12:42:30 PM

Title: Critial Mach4 Lathe Facing Cycle bug
Post by: Azalin on October 23, 2026, 12:42:30 PM

Mach4 version 4.2.0.5036

The problem is simple.

1- Open a new Facing Cycle.
2- Enter Xi:10, Zi:0, Xf:0, Zf:-1
3- Tap View Toolpath.
4- Run the code.
5- Machine crashes.

The problem is Mach4 adds an extra 10mm to the Z+ position value. And the carriage or the tool hits the tailstock and/or the live center.

N0095 G00 X0.1000 Z10.2000 (Positioning for Start of Cycle)

NOTE: The one or two earlier version of Mach4 hadn't this bug.

Title: Re: Critial Mach4 Lathe Facing Cycle bug
Post by: Azalin on October 23, 2026, 02:32:58 PM

Nevermind. I made Claude fix the bug.