Hello Guest it is November 20, 2019, 09:00:28 AM

Author Topic: V carving using Mach 3  (Read 4164 times)

0 Members and 1 Guest are viewing this topic.

V carving using Mach 3
« on: May 06, 2011, 12:42:56 PM »
I really hope that someone here can help me get this set up right.
I have a problem with v carving and I think that it may be the mach software.  If i try to v carve a name for a sign I get real a cut that takes a considerable amount of time and jerky motion out of the machine .  I have tried every thing that I know and I have never been happy .
I am cutting on a shopbot machine with an acension control box using mach 3 R3.042.040
windows xp sp3 1 gig ram
Is every one else doing v carving that they are happy with?
Is there a check list of settings that need to be verified?
I did have better results using the old shopbot software even though it was slow and  noisey.
Any help would be helpful

 

Offline Tweakie.CNC

*
  • *
  •  8,005 8,005
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: V carving using Mach 3
« Reply #1 on: May 06, 2011, 12:47:50 PM »
Hi,

Could you post your GCode file. If it runs OK here then that will at least rule out one possibility.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: V carving using Mach 3
« Reply #2 on: May 06, 2011, 06:33:35 PM »
Are you in CV mode, or Exact Stop mode?

If you are in CV mode, make sure all CV options are turned off.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: V carving using Mach 3
« Reply #3 on: May 06, 2011, 07:34:54 PM »
I am using CV mode and all options are off.
Should the motors all be set at the same speed ?
Should I see G2, G3  in the Gcode?
 Does the font selection matter? I am using a True Type font.
90 degree bit  1.25  diameter  1.2 IPS  on the feedrate

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: V carving using Mach 3
« Reply #4 on: May 06, 2011, 07:38:32 PM »
Mach3 uses ipm. How are you using ips?
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: V carving using Mach 3
« Reply #5 on: May 06, 2011, 07:40:08 PM »
when I set the toolpath I use IPS in the tool database
Re: V carving using Mach 3
« Reply #6 on: May 06, 2011, 07:43:13 PM »
Bye the way ger21,  the 2010 screen set is the cleanest, simple screen set I have seen to date. Excellent job !

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: V carving using Mach 3
« Reply #7 on: May 06, 2011, 07:52:26 PM »
Thanks, glad you like it.

Are you sure you have all the CV options off? Both on the settings page and all the ones in General Config?

What are your accel and velocity settings?
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: V carving using Mach 3
« Reply #8 on: May 06, 2011, 08:00:55 PM »
The cv settings in the general config (CV control) are all unchecked. On the settings screen in the "CV Settings" CV on/off is checked'.
The accel is set at 10 the  Velocity  is set at 350 ipm

Offline ger21

*
  • *
  •  6,288 6,288
    • View Profile
    • The CNC Woodworker
Re: V carving using Mach 3
« Reply #9 on: May 06, 2011, 08:28:45 PM »
Can you increase the accel? 10 is pretty low for a velocity of 350
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html