6W Laser

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This topic contains 21 replies, has 9 voices, and was last updated by Profile photo of Glenn Glenn 3 months, 1 week ago.

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  • #21114
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Hi All,

    Im looking at buying a MPCNC kit to use as a laser cutter.

    Looking at high power lasers I came across with this one:

    http://optlasers.com/en/plh3d-6w/175-plh3d-6w-5902693110637.html

    It looks like I can even power it from the PSU that comes with the MPCNC kit, is this assumption correct?

    How does this analog manipulation work?

    It seems to be a very interesting and powerful laser. Might think of making a box for the whole setup with laser filter protection etc.

    Am I going the right way?

    Bye!
    Joao

    #21115
    Profile photo of Ryan
    Ryan
    Keymaster

    They actually contacted me 2 or 3 days ago. hopefully they are working on a write up on how to use there product with the MPCNC. Might want to pop over there and email them to tell them you are interested.

    #21116
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Cooooooollll

    I was buying the machine from your shop. This is going pretty sweet up to know 😛
    So ill just do what you say and write them an email asking about integration with your machine!

    joao

    #21132
    Profile photo of Dave B.
    Dave B.
    Participant

    That’s the same laser I’ll be starting with but not the fancy housing and just ordered a 2W as well for finer detail burning. I got mine from DTR Laser shop. I’ve been developing a mount for it and will do a writeup on the process when I get things together. My thermal paste and parts for tuning the driver came in yesterday so hopefully this weekend!!

    I’m going to be using this driver from Optlasers.com

    #21169
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Hey David,

    Good stuff! I am only starting with CNC laser 3D print etc.

    I am baby stepping and wanting to do it right. My trade is architecture so I know how to use a scalpel and glue but all this technology is very exciting to me!

    In the past Ive built a couple of guitar amps and other wood/electronics stuff for myself and I manage to do it right!
    BTW you are the Sigil Pickups youtube man right? 😉

    I am about to buy the laser and thank you mr Allted for your linking me with those friendly people from Opt lasers

    They have the aluminium holder attached and when I bought the MPCNC I selected the MK8 extruder mount. Can this mount be of use?
    If the extruder mount is as the one pictured in the second attachment, can the aluminium mount work within the wholes from the Z axis thing?

    joao

    #21179
    Profile photo of Ryan
    Ryan
    Keymaster

    I doubt it. The extruder gets clamped in.
    Since the laser takes no load I am sure you can just cable tie it on until you figure out a proper mount. I have done it before.

    #21206
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Ok

    So I ordered only the laser.

    I’ll now start to see how things go together:

    1 – The PSU is 12v 30A 120/220v so I guess it will be ok for powering everything up

    2 – I would like to run the extruder and the laser from the MPCNC ramps board – an possibly keep both offset mounted at all times

    a – so including one driver slot for the mk8 style extruder (total: 1X; 1Y; 1Z and one 3D print) I think one driver slot will be let free.

    b – Can I use the free driver slot to control and modulate the laser output? seems like often opt laser uses PWM signal for spindle control to achieve this. The signal must variate from 0 to 5v to make it possible to go from 0 to 100% output from the laser.

    3 – I am going to use Fusion 360 from autodesk. Any Ideas, help with this?

    In the end I hope to get all this information compiled and possibly with pictures so that everyone that tries to steer this path has a quick and easy process… Hopefully!

    David are you after this analogue modulation also? You seem to be much more competent that me at this stuff, If you could share your ideas and you setup later on it would be most appreciated.

    ‘night everyone!
    Joao

    #21252
    Profile photo of Ryan
    Ryan
    Keymaster

    1- It should I am not sure of the laser power requirements. You have 12v30A max 360W, the machine only needs about 12v 3A 36W so as long as it requires less than 320W you should be fine.

    2-keeping both on there will sacrafice speed and precision on both tools, more so on the laser and you probably don’t want your optics near all that dust.

    a-yup

    b-nope

    3-lots of video tutorials on fusion. Not going to work with a laser. Steep learning curve, really steep. You should learn the basics on estlcam first. Fusion has at least 5x’s the options. you really need to know what every single one of them means or you will get bad cuts.

    #21258
    Profile photo of Dave B.
    Dave B.
    Participant

    Yeah, I’m the Sigil Pickups guy…and StuntMonkey Pedals, RaptorFPV, Full Impact MMA, Bowes Digital…. I have a lot of hobbies 😉

    Okay, looks like you’re going to run a 3D printer and laser from the same machine; are you going to do a router as well or just the first two? It’d be possible to do the laser and printer in one but as vicious1 said, it’d be better to run them separately… BUT I understand the appeal to have them both on for ease of switching.

    I’ve been eyeballing Leo69’s offset laser mount and thinking it’d be handy to do exactly what you’re thinking. Here’s the link;
    http://www.thingiverse.com/thing:1301138
    I was going to modify his mounting bracket to fit my heatshink but have decided just to keep things separate for now and use the Hicwic universal mount for each (link http://www.thingiverse.com/thing:1234989). If things go as planned, I’ll probably make a second machine for the laser anyway.

    Also, be sure to follow Leo69’s tutorial on this forum and the main site homepage on how to set up a laser with the PWM/TTL, I’m learning as I go and it’s starting to make sense the more I look at it.

    Advice (like it or not!!): Get your printer running first and then start designing and making parts for the other stuff as you see fit. Once you have the printer running, you’re ready to take over the world!! Then start thinking about tackling the laser.

    #21298
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Hi Guys,

    Thank you both on your input. I am reviewing all that you said and will come back shorty with more nonsense.

    Lots to review!
    joao

    #22160
    Profile photo of PCFlyer
    PCFlyer
    Participant

    What’s the latest on the 6w laser?

    #22190
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Hi everyone,

    So I have been quiet, that is true. A lot to put together this past weeks!

    I managed to assemble the MPCNC now called RUFUS here at home. Very nice mr Vicious! very nice indeed!!
    I am still tinkering with fine tuning and squaring the machine and letting my new love flourish.

    Last weekend I assembled the 3D printer and after a very frustrating morning of internet research and scraping off bits of filament I got the hang of it. Now, two owls, a squirrel, a stag and a test cube later I am a bit more confident about it! Hopefully it will continue to be this way although I have not printed anything today and im getting scared of loosing my recent skill :/

    New weekend I will build a table (Im being told the dinning table need to be set free) and an enclosure and start to assemble the laser.
    I can tell you now that the laser looks very professional and neat, and that the optlaser people have been very friendly. I feel very confident about it.
    I will be trying to document and explain how ill set the laser up hopefully before Christmas (so that I can make some gifts!)

    as a teaser here is the laser with its neat enclosure and some tubes I have been holding with the J tech P shielding.

    I will be posting stuff soon 🙂

    my compliments mr Vicious!
    Joao

    Attachments:
    #22294
    Profile photo of Ronnie_CNC
    Ronnie_CNC
    Participant

    I found this while looking for a similar solution Laser tube on CNC router which might be a way to go.

    At least it seems that the mounting style with the MPCNC would work, and it may be possible to use as a laser cutter rather than just engraving. However I know that these laser tubes are very fragile so could be risky.

    #22301
    Profile photo of Barry
    Barry
    Participant

    My biggest issue with trying to use a laser tube is rigidity. I don’t think our router is rigid enough for the mirror path. You’ll also need to keep it in a heated space once you have a laser tube, they’re water cooled, through the glass, so no freezing. I could be wrong on the rigidity, but mine will shake the cabinets it’s attached to, even with the 5 foot square torsion box on top.

    #24576
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Hello Everyone!

    Just finished my laser setup.

    Have a look at my MPCNC with a optlaser PLH3D head doing some doodles.

    I will try to post more soon.

    see ya,
    Joao

    https://youtu.be/8tJ03InRsYY

    #24577
    Profile photo of Ryan
    Ryan
    Keymaster

    video is private

    #24578
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Should be working, could you have another look?? :/

    #24579
    Profile photo of Ryan
    Ryan
    Keymaster

    Nice! looks good, added you to the videos page. Thanks.

    #24590
    Profile photo of Joao Simoes
    Joao Simoes
    Participant

    Happy to be part of this wonderful family!

    #24600
    Profile photo of Jason
    Jason
    Participant

    What kinda lens are you using on your 6 watt?

    I Typically use the 3 element lens that DTR offers. The G2 produces a spot that is too large. I ordered a couple lenses off ebay on recommendation from the guys over at PEP.

    This laser would be totally awesome if we could somehow get the focused spot smaller.

    #27401
    Profile photo of gbiski
    gbiski
    Participant

    Hello Joao,

    Will you be able to document and explain the setup of the module ?
    I am thinking of the PLH3D 2,8W.
    How did you connected on the ramps and what firmware mods did you made ?
    Have you designed finally a mount ?

    thanks
    George

    #27742
    Profile photo of Glenn
    Glenn
    Participant

    Hey Joao,

    I am in the middle of assembling my MPCNC.

    I hope to cut 5mm foam poster board with it.

    Does the 6w laser you installed have enough power to cut 5mm foamboard?

    Glenn

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