As promised I'd post an update after testing it. It's been running reliable at 2400mm/min so far. Maybe I'll change the leadscrews to a higher pitch later to achieve higher speeds.

I'm still having some issues with stall detection, but I'll search the forums for some answers on that first

Thanks for your reply @Phaedrux

That's indeed the motors I'm using.

After doing the math that means I should have a max speed of 2400mm/min. This would explain the stalls at 3000.
I was able to get the motors running without stalling at 12000 (their max speed at 1500rpm) but this is probably due to the inertia when rotating that fast.

I'll test it out and post an update on wether or not this runs good reliably.

Hi,

I've been using a Duet 2 wifi for a while now for my diy cnc router. I've upgraded the CNC to use linear rails and leadscrews recently. Since then I've been having lots of issues with the motors, especially the Y motors (using 2). I've upgraded to a duet 3 since I'm using 3A motors (thinking that the duet wifi drivers were the issue), but the problem persists.

This is my setup:
Dual motors on the Y axis (Nema 23, 3A rated. "Motech Motor: MT-2315HS300AW-C")
Both motors are connected to a seperate driver
Leadscrew has an 8mm pitch
Steps/mm: 400
Microstepping: 16 with interpolation
24V Power supply is used

The issue:
The motors stall reliably at 3000mm/min after moving about 50-60mm.

What I've tried/checked:
M122 command shows no issues detected after a stall.
Stall detection also doesn't detect the stalls.
Changing motor currents ( testing 2000mA-2500mA on the duet wifi and 3000mA on the Duet3)
Changing acceleration settings
Changing jerk setting
Check alignment of all components. Everything moves smoothly when I remove the motors
Lubricating all rails and leadscrews

I'm completely at a loss here. Does anyone have any ideas on how to fix this?

@bearer I got a chance of testing it today and the work coordinate system works perfectly, this is exactly what I was looking for. Thanks!

Thanks guys, I can't believe I didn't see this in the GCode page, I went over it a few times already. I'm going to give this a try tomorrow

Hi,

I'm using the Duet wifi for my cnc router and its working great.

When I start a milling operation, I set the machine's zero point to a suitable location on my stock. Currently I'm just using G92 X0 Y0 Z0 to set my zero point. What I would like to do also is set the axis minima and maxima according to the current position.

I'll give an example of the steps I want to take:

• Let's say I have a machine that can move X500 and Y500
• I home the machine
• I manually move the machine to the spot where I want to start machiening (lets say x100 Y100)
• Then I want to call the macro which sets the minima to X-100 Y-100 and X400 Y400 for the maxima
• After that I want to use G92 to set everything to 0

Is it possible to do this?