Author Topic: Laser went crazy  (Read 338 times)

surgimfg

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Laser went crazy
« on: December 29, 2016, 10:42:40 AM »
engraving on alum panel.  Basicaly just burning paint of al sheet. the file is a dxf and i am using T2 laser.   the artwork is outline with a fill hatch to complete the letter.  the file cuts fine  for a while and then just goes crazy. it runs into the side. it cuts one letter then shifts up  or down and cuts another letter which is supposed to be on the same line. 

 

Zax

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Re: Laser went crazy
« Reply #1 on: December 29, 2016, 11:51:31 AM »
Please post the DXF you're using and I will take a look.

treinbert

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Re: Laser went crazy
« Reply #2 on: December 29, 2016, 11:53:51 AM »
Welcome on this forum.

We can look at the file, but it will be easier, when you attach it to your message.
Yes, Zax was a touch more quickly, he wrote T2Laser.

Kind regards,
Bert Mengerink
Hartelijke groeten/Best regards/Freundlichen Gruessen,
Bert Mengerink

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Benbox A3 with 2500mW/3500mW laser
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surgimfg

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Re: Laser went crazy
« Reply #3 on: December 29, 2016, 01:27:14 PM »
Here is the file and a pic of what happened

Zax

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Re: Laser went crazy
« Reply #4 on: December 29, 2016, 01:41:30 PM »
Well from the picture I can be pretty sure that's not a software (G-code) issue, it looks like your losing steps.

Check your axis are running smooth and the belts aren't too tight. The motor drivers may be overheating if you haven't set the current up correctly or are compensating for excess friction / hardware issues.

surgimfg

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Re: Laser went crazy
« Reply #5 on: December 29, 2016, 02:29:22 PM »
was this after the look at the dxf file.  do you want the gcode file.  I still have it.


Zax

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Re: Laser went crazy
« Reply #6 on: December 29, 2016, 04:02:10 PM »
The DXF looks fine, yes, zip the g-code and send it to me and I will double check.

Zax

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Re: Laser went crazy
« Reply #7 on: December 29, 2016, 04:51:05 PM »
Checked the g-code and it's correct too.

Zax

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Re: Laser went crazy
« Reply #8 on: December 29, 2016, 04:55:34 PM »
Mark a location with the laser and then jog the machine around at high speed. Go from side to side a few times and then mark the spot again, if it's moved your axis has a problem. Then repeat for the other axis and finally together as that will load the PSU and may lower current causing missed steps. Of course it's possible the problem only occurs when the laser is on and everything begins to heat up, in which case it will take more trial and error.

surgimfg

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Re: Laser went crazy
« Reply #9 on: December 29, 2016, 04:57:54 PM »
ok I will do.  Must do it tomorrow and will let you know.