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Thread: Can't figure this out

  1. #1
    Join Date
    Jun 2005
    Location
    Southern Minnesota
    Posts
    75

    Can't figure this out

    I don't have a clue as to what is happening here. The laser cuts normaly and then powers down and then powers back up leaving the piece uncut in the area I have noted with arrows. I have checked everything I can think of incuding alignment, clean lens, and any software issues. I'm using
    corel X3 as my laser software.

    TIA
    Dave
    Attached Images Attached Images
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  2. #2
    Post the Corel file. Probably something stupid.

    Mitch
    "I love the smell of sawdust in the morning".
    Robert Duval in "Apileachips Now". - almost.


    Laserpro Spirit 60W laser, Corel X3
    Missionfurnishings, Mitchell Andrus Studios, NC

  3. #3
    Join Date
    Jun 2005
    Location
    Southern Minnesota
    Posts
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    This pattern of cutting and non cutting is affecting every file that I use
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  4. #4
    Join Date
    Dec 2004
    Location
    Southern California
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    1,125
    Dave,

    What laser are you using that might help to get some answers for you.

  5. #5
    Join Date
    Jun 2005
    Location
    Southern Minnesota
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    My laser is a Epliog Legend 32 75 watt
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  6. #6
    Join Date
    Jun 2005
    Location
    Southern Minnesota
    Posts
    75
    I Forgot to mention that I cut baltic birch at 100% power and 50% speed
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  7. #7
    Join Date
    Jul 2005
    Location
    Sammamish, WA
    Posts
    7,623

    Can't figure this out

    Is it cutting lines but not curves? Have you tried a file that worked before? I'd get on the horn to Epilog Technical Support, and e-mail them the file. When my tube went out it was cutting and not cutting randomly,
    this is a really odd one.



    Sammamish, WA

    Epilog Legend 24TT 45W, had a sign business for 17 years, now just doing laser work on the side.

    "One only needs two tools in life: WD-40 to make things go, and duct tape to make them stop." G. Weilacher

    "The handyman's secret weapon - Duct Tape" R. Green

  8. #8
    50% speed sounds pretty fast for vector cuts, have you tried slowing it down--maybe to 20 or 25?

  9. #9
    Join Date
    Jun 2005
    Location
    Southern Minnesota
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    I have tried different speeds and does not make a difference I have cut all of the 1/8th inch baltic birch at 50% speed and 100% power and have not had a problem. I have used the same files for almost 2 years and they have all cut normaly untill last friday when the problem started. Last nite I started to cut a new pattern and the same problem started after the second sheet.
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  10. #10
    Join Date
    Oct 2004
    Location
    Cape Town, South Africa
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    I dont have your laser , so dont take what I say as gospel but it
    sounds like a tube overheating issue , first thing to check is that the tube isnt overheating , open the tube enclosure and used canned air to blow all dust off tube fins , fans , vent holes etc , IE make sure you have the volume of air circulating and clean metal surfaces for any heat exchangers. Also check the motherboard and blow the dust of it and any driver ics etc. Check with your mnfgr if its ok before doing any of this!!!!

  11. #11
    For me it looks like your laser tube is not working correctly or you have any file transmisson problem. Does it happen after you pressed the first time start or after the job is already stored in your machine?

  12. #12
    Join Date
    Jun 2005
    Location
    Southern Minnesota
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    I do routine cleaning on my laser twice a month and had just cleaned all of the cooling fins. the motherboard is clean and dust free. The laser is located in a air conditioned room with additional fans blowing cool air on the laser. When I start a job it cuts the 2 or 3 sheets out perfect and then it will begin to power down and power up first missing one or two pieces then on the next sheet it will miss cut 3 or 4 pieces and this will get worse with every sheet I cut.
    Dave

    Laser Lane Engraving
    Epilog Laser, Legend 32, 75 Watt
    Corel X4, Photo Shop, Photograv Software

  13. #13
    Join Date
    May 2005
    Location
    SE South Dakota
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    Dave

    I tend to agree with Rodne, you have an issue with the tube! I've replaced several over the years and it was always the tube, it would start out fine and then as things "heated up" the cut quality diminished. I've even had the beam "glow" yellowish instead of white when engraving an object. On the other hand the tube could be fine and the laser electronics went sideways which is the same thing basically . Keep us posted.

    Bruce

  14. #14
    Join Date
    May 2004
    Location
    Vancouver, Washington
    Posts
    397
    seems like too much of a fluke for the failed cut portion to be in the same spot for each object like that. Would the laser fail like that due to heat?

    It's in different spots on the table, but same within the object, so it would appear to me to be a problem with the file. Maybe something's corrupting the data.

    Shaddy

  15. #15
    Join Date
    Mar 2005
    Location
    Anaheim, California
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    You've got a file that has a whole array of these shapes, and the same subcurve of some of them is cutting at a different power level. I've got to agree with Shaddy on this one: no way is that a hardware issue. Easiest way to tell for sure is to mirror the entire job both vertically and horizontally and rerun it...see what (if anything) fails.

    Narrow it down:

    First, go into the object manager and make sure there isn't some hidden cruft on that page that's confusing the driver: all you should see is a regular array of your shapes, anything else should stick out like a sore thumb. Then...

    1. Copy one of the ones that fails to a different page (same position) and cut it by itself. If it works, the file is ok, so it's probably some kind of buffer overflow issue. If it fails, move it to a "good" position and see if it still fails: if it does, the problem is in the file...maybe that curve is getting set to the wrong color for some reason.

    2. Copy one of the ones that works to a different page and move it to a "failure" position. If it works, move it back to the original page (replacing a failed one) and see what happens.

    3. Flip the whole array vertically and cut it...see if the same ones fail.

    4. (Assuming your driver supports it) Select one row at a time of the original array and cut it as a separate job. If they all work, problem is probably in the driver...if one or more of them fail, problem is in the file.
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