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41
General Mach Discussion / Re: Mach3 backlash compensation issue
« Last post by Tweakie.CNC on June 26, 2026, 02:17:02 AM »What is the make and model of your 'Amazon Special' motion controller ?
Tweakie.
Tweakie.
Recent Posts
42
General Mach Discussion / Mach3 backlash compensation issue
« Last post by teresalooney on June 25, 2026, 10:43:30 PM »Hello,
I recently built a 1000 mm × 1800 mm CNC router. After machining some very long parts, I noticed positional drift. Using a dial indicator, I measured approximately 0.002" of backlash on the X-axis. For reference, the machine is driven by Kevlar timing belts.
I'm running Mach3 and entered 0.002" in the backlash compensation settings, enabled compensation, and restarted the software. However, regardless of the value I enter, the machine's behavior doesn't appear to change.
I've seen several forum posts suggesting that backlash compensation is handled by the motion controller or breakout board rather than by Mach3 itself.
So, is my only option to replace my current breakout board (a $50 Amazon special) with a higher-quality controller?
Because these parts are time-sensitive, I've temporarily compensated for the error by manually adjusting the X-axis dimensions in my CAM software, but that's obviously not a long-term solution.
Any advice or suggestions would be greatly appreciated. Thanks!
I recently built a 1000 mm × 1800 mm CNC router. After machining some very long parts, I noticed positional drift. Using a dial indicator, I measured approximately 0.002" of backlash on the X-axis. For reference, the machine is driven by Kevlar timing belts.
I'm running Mach3 and entered 0.002" in the backlash compensation settings, enabled compensation, and restarted the software. However, regardless of the value I enter, the machine's behavior doesn't appear to change.
I've seen several forum posts suggesting that backlash compensation is handled by the motion controller or breakout board rather than by Mach3 itself.
So, is my only option to replace my current breakout board (a $50 Amazon special) with a higher-quality controller?
Because these parts are time-sensitive, I've temporarily compensated for the error by manually adjusting the X-axis dimensions in my CAM software, but that's obviously not a long-term solution.
Any advice or suggestions would be greatly appreciated. Thanks!
43
Promote and discuss your product / Re: E_CNC WHB04B v1.1.1 – Professional WHB04B Solution for Mach4 and MachPro
« Last post by Srato on June 24, 2026, 12:27:35 PM »**Update – Integrated Trial Activation**
The evaluation process has been simplified.
It is no longer necessary to request a 7-day trial license from the developer.
The installer now includes an integrated trial activation, allowing the software to be used immediately after installation.
This change makes installation faster and simplifies product evaluation for new users.
The installation manual has also been updated and is now available for download.
Documentation:
https://drive.google.com/file/d/1wDk9DQd4rW2orXpwlhHo1mYhyDJU_0fT/view?usp=sharing
English Language Configuration Guide:
https://drive.google.com/file/d/1TySGIGdOLSj1W2WJzeyd7abMnRkXtDcg/view?usp=sharing
Website:
https://e-cnc.pt
Installation Videos:
Mach4 + MachPro:
https://youtu.be/VhU7JDeXLFo
Mach4:
https://youtu.be/OceMDKB33-c
MachPro:
https://youtu.be/gmYY4G-VAhM
ConfigUI:
https://youtu.be/f42EDeMtrzE
Thank you all for your interest and feedback.
Best regards,
Sérgio Couto
E_CNC Software Development
[e_cnc@outlook.com](mailto:e_cnc@outlook.com)
The evaluation process has been simplified.
It is no longer necessary to request a 7-day trial license from the developer.
The installer now includes an integrated trial activation, allowing the software to be used immediately after installation.
This change makes installation faster and simplifies product evaluation for new users.
The installation manual has also been updated and is now available for download.
Documentation:
https://drive.google.com/file/d/1wDk9DQd4rW2orXpwlhHo1mYhyDJU_0fT/view?usp=sharing
English Language Configuration Guide:
https://drive.google.com/file/d/1TySGIGdOLSj1W2WJzeyd7abMnRkXtDcg/view?usp=sharing
Website:
https://e-cnc.pt
Installation Videos:
Mach4 + MachPro:
https://youtu.be/VhU7JDeXLFo
Mach4:
https://youtu.be/OceMDKB33-c
MachPro:
https://youtu.be/gmYY4G-VAhM
ConfigUI:
https://youtu.be/f42EDeMtrzE
Thank you all for your interest and feedback.
Best regards,
Sérgio Couto
E_CNC Software Development
[e_cnc@outlook.com](mailto:e_cnc@outlook.com)
44
General Mach Discussion / Re: xbox controller
« Last post by Doily on June 24, 2026, 10:10:20 AM »controller works like a charm . just have buttons on controller i wish i could assign task to
45
General Mach Discussion / Re: xbox controller
« Last post by LaxieHong on June 24, 2026, 01:15:35 AM »One thing I'd double-check is whether Mach is actually communicating with the motion controller. I've seen cases where all the settings looked correct, but the plugin wasn't loading properly or the controller wasn't being detected. Also worth checking the diagnostics screen for any status messages or fault indicators. Sometimes the issue ends up being something simple that's easy to overlook.
46
General Mach Discussion / Re: CNC plasma Mach 3 torch height controller issues
« Last post by Steve Stallings on June 23, 2026, 07:18:47 AM »The "Arc OK" comes from the Proma 150's output connector.
On the Proma it is labeled just "ARC" and is on the same connector as the "UP" and "DWN" signals.
On the Proma it is labeled just "ARC" and is on the same connector as the "UP" and "DWN" signals.
47
General Mach Discussion / CNC plasma Mach 3 torch height controller issues
« Last post by rosaparks on June 23, 2026, 01:30:13 AM »Hello,
I'm helping a friend set up a used Premier Plasma CNC table equipped with a Proma 150 torch height controller. I believe everything is wired correctly, but when we received the machine, I didn't see any wiring for an "Arc OK" signal.
When attempting to cut with the THC enabled, the torch fires, then the machine pauses for about 8 seconds after the M3 command before timing out. I also noticed that the pigtail cable supplied for the Hypertherm 45XP only contains four wires—two for torch on/off control and two for the voltage feedback going to the THC.
In Mach3, pin 10 on the breakout board appears to be assigned to "Torch On," but there is no wire connected to pin 10 on the breakout board.
Could the missing Arc OK signal be causing the issue? Any advice or troubleshooting suggestions would be greatly appreciated.
Thanks in advance.
I'm helping a friend set up a used Premier Plasma CNC table equipped with a Proma 150 torch height controller. I believe everything is wired correctly, but when we received the machine, I didn't see any wiring for an "Arc OK" signal.
When attempting to cut with the THC enabled, the torch fires, then the machine pauses for about 8 seconds after the M3 command before timing out. I also noticed that the pigtail cable supplied for the Hypertherm 45XP only contains four wires—two for torch on/off control and two for the voltage feedback going to the THC.
In Mach3, pin 10 on the breakout board appears to be assigned to "Torch On," but there is no wire connected to pin 10 on the breakout board.
Could the missing Arc OK signal be causing the issue? Any advice or troubleshooting suggestions would be greatly appreciated.
Thanks in advance.
48
Promote and discuss your product / Re: E_CNC WHB04B v1.1.1 – Professional WHB04B Solution for Mach4 and MachPro
« Last post by Srato on June 22, 2026, 06:46:47 PM »Hello everyone,
The website is now fully operational, allowing all users to test and evaluate the software. I believe it will be a valuable solution for many operators using the WHB04B-4/6 controller with Mach4 and MachPro, helping to resolve common compatibility and operational issues.
Website:
https://e-cnc.pt
Free 7-Day Trial Download:
https://e-cnc.pt
I would greatly appreciate any comments, suggestions, and feedback from Mach4 users.
Best regards,
Sérgio Couto
E_CNC Software Development
The website is now fully operational, allowing all users to test and evaluate the software. I believe it will be a valuable solution for many operators using the WHB04B-4/6 controller with Mach4 and MachPro, helping to resolve common compatibility and operational issues.
Website:
https://e-cnc.pt
Free 7-Day Trial Download:
https://e-cnc.pt
I would greatly appreciate any comments, suggestions, and feedback from Mach4 users.
Best regards,
Sérgio Couto
E_CNC Software Development
49
Promote and discuss your product / Re: E_CNC WHB04B v1.1.1 – Professional WHB04B Solution for Mach4 and MachPro
« Last post by Srato on June 22, 2026, 02:23:17 AM »Thank you very much for your feedback Tweakie.CNC
50
Promote and discuss your product / Re: E_CNC WHB04B v1.1.1 – Professional WHB04B Solution for Mach4 and MachPro
« Last post by Tweakie.CNC on June 22, 2026, 01:17:26 AM »Excellent Manual Srato.
I wish you every sucess with your software solution.
Tweakie.
I wish you every sucess with your software solution.
Tweakie.