Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: mlsilva on February 20, 2026, 12:39:26 PM

Title: Tangential Knife Control Configuration
Post by: mlsilva on February 20, 2026, 12:39:26 PM

Hi everyone, I hope you're all doing well!

I'm building a 4-axis (XYZA) CNC machine for fabric cutting. I haven't yet decided which software I'll use, but from what I've seen in videos online, Mach3 seems to meet my needs well.

I need to control the A-axis (4th axis) as a tangential knife.

Could someone show me how this configuration is done in Mach3?

Title: Re: Tangential Knife Control Configuration
Post by: sertarrow on March 03, 2026, 03:18:09 AM

I’ve seen tangential knives run with Mach3 (Mach3), and the important thing to understand is that Mach3 won’t automatically behave like a dedicated knife controller — you need to treat A as a true 4th axis.