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  1. #1

    Question I know nothing.

    I have recently been tasked with trying to get our laser working; I have never used a laser or CNC before.

    I was able to find a rough tutorial on how to get it to start and was able to somewhat stumble through using the LaserGRBL software to make the laser engrave something. I have since started running into issues and need them sorted out before we try to engrave 250 pieces for an upcoming project.

    Laser Model: Two Trees TS3 Laser

    Issue 1: Whenever I try to tell the machine to 'go home' it flies off to the left and makes an awful clicking noise as it hits the side of the machine. I have tried to find how to 'set a new home position' but it always flies off when told to go home.

    I can get around this by physically moving the laser when it is off into the starting position i want and then unchecking the 'go home' command in the LaserGRBL software; though this seems very wrong and i feel there is a better solution to this.

    Issue 2: It burns, everything. I have found an arbitrary setting 'max power' and can set that value lower, but the laser seems to either burn something, or not engrave at all (it can't seem to engrave gray colours). Though this value is not consistent, sometimes it will burn something on 5% power, and other times the design will fail to be visible on 70% power.

    issue 3: If I manage to find a vector design that will not burn yet will show up (usually thick text) it will still burn the edges where the laser 'changes direction' to go do the next line.

    Issue 4: It seems to just stop after 2 - 10 seconds and has to be told to 'resume from the last line completed' and then it will finish the job. This is obviously not that huge of an issue, as i just have to tell it to continue, but it doesn't seem like it should be doing that.

    I have tried to comb the internet for solutions to these issues, but can't seem to find any useful information. everything I am finding is either so crazy simple ' here is how to install your software to your windows machine' and then jumps to something crazy complex and advanced 'resolder this specific capacitor on logic board model xyz to make it move to the right 2% faster'. I know enough to install the software and to have tried the 'turn it off and back on again, reinstall the software' troubleshooting, but i know nothing at all past getting the image into LaserGRBL and sending it to the laser to engrave. If someone could let me know if I am doing something super wrong, or if my machine may be broken (it is literally brand new, did about 15 test cuts on it so far) it would be greatly appreciated.

    Thank you!

  2. #2
    Registered
    Join Date
    Mar 2011
    Posts
    18

    Re: I know nothing.

    Apparently the boss has elected you as the new laser expert. Take pride in the fact that he believes in you enough to do that.

    There is no simple answer. You need to become totally familiar with all the instructions, quirks and settings of the machine. This will take time, which conflicts with the need to get the immediate job out the door. There are no shortcuts to competence.

    It may seem like you're under pressure right now, but once it's all ironed out life will become more bearable again. Trust me, I've been there.

  3. #3
    Member
    Join Date
    Jun 2010
    Posts
    4173

    Re: I know nothing.

    Apparently the boss has elected you as the new laser expert.
    Pay rise . . .
    And a LONG learning curve.

    Cheers

  4. #4
    Member
    Join Date
    Jun 2015
    Posts
    3675

    Re: I know nothing.

    as always, the chosen one is being tasked to handle the mistery machine
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  5. #5

    Re: I know nothing.

    I appreciate that; I know he has confidence in me, but it doesn't feel good that I keep running up against the same wall of 'not knowing the basics'.

    Are there any resources, aside from a 4 year college course, that you can recommend? As I said in the post, everything I've found thus far seems to jump from super simple to super complex in an instant.

    Thank you

  6. #6
    Member
    Join Date
    Jun 2010
    Posts
    4173

    Re: I know nothing.

    Best recommendation: find someone knowledgeable not too far away and hire him for a day or two. The boss can pay.
    That way will, in the long run, be much cheaper.

    Cheers
    Roger

  7. #7
    Member
    Join Date
    Jun 2015
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    3675

    Re: I know nothing.

    hy ingaged, just like rcaffin said

    it is literally brand new, did about 15 test cuts on it so far
    if machine is new, or close to being new, then contact the vendor and ask for instructions : they may have electronic manuals, or someone skilled that you can get in touch with; if the vendor is only an intermediary, then hope that he has conections, otherwise is up to you to find the cnc producer, and from their site you may find something/someone ?/or local dealership, that you may contact, even if not in your area

    besides produces/vendor, try to web search your cnc model + forum, maybe there is a dedicated discusion somewhere, and hopefully you'll be receving answeres also,on youtube, search your cnc model, then try to contact the person behind it

    looooook, just found this : https://www.youtube.com/c/Twotrees3Dofficial/featured

    at the end, when you will be a guru, make a little/pocket manual with how2use, and/or some videos for more complex tasks, so to avoid future similar situations
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  8. #8
    Registered
    Join Date
    Nov 2008
    Posts
    617

    Re: I know nothing.

    I clicked on the link for the TS3 site and see a slick video of a machine that seems no more complicated then push the button and go. The question you will have to answer: is it you or did your boss buy a useless machine? I’d go back to stock settings and if nothing works then contact the company and have them help you. Short of becoming a GRBL expert, which is ok for a hobby but not a business, it should work or it’s not for use in a business.

    By the way check the Lightburn forum which is good for diode based machines (todays K40).


    Sent from my iPhone using Tapatalk

  9. #9

    Smile Re: I know nothing.

    I very much appreciate everyone's suggestions!

    We had reached out the manufacturer several times and got no more than 'try restarting the software'. Until today, when we received a video file showing my exact problem and a super easy fix for it, uploaded here: https://youtu.be/fLsUHBJLz_E

    Apparently there was a limit sensor that gets bent in shipping a lot, and so they showed how to go in and bend it back; BOOM! the laser's home function now works flawlessly. I still have some quality issues, but I am going to take the suggestion to move away from LaserGRBL and try out Lightburn (though i will have to figure out how to get around the trial restrictions).

    I just wanted to update this thread in case anyone else is as clueless as me on how to get this machine to home.

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