LC900N GK weike 90W laser cutter review.


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    Default LC900N GK weike 90W laser cutter review.

    !We picked up a WKLaser direct from china. Here are some notes..

    Ordering was easy enough, $700ish to broker it.

    about 6 nuts and bolts came loose in shipping, mostly the doors. half of the locks were stripped at the back, easy to fix. they are standard locks.

    One of the mirrors was loose, we replaced them all with II-VI's and realigned everything. The mirrors were dirty out of the factory, the focus lens was covered in black specs (on the topside)

    Small crack in the case on the upper front left side where its hinged, the welds gave way. reasonably easy fix.

    Airflow seems odd for the suction, not sure yet why the back is open? (ohh for long boards derp)

    Poor grounding, the gantry is not properly grounded to the chassis, check it and fix it.

    Internal fluorescent burned out after a couple of days (black edges) its a T4 28" tube

    Gantry isn't aligned to the table properly or the chassis, cheapy plastic blocks instead, easy to rebuild and fix.

    I don't like that home's automatically when you switch it on, but that's a minor thing.

    Z table is a bit shonky but it more or less works, its easy to get it out of alignment.

    honeycomb/razors just sit on the work table, they can move off and get jammed, double sided tape fixes it but something to affix it would be better.

    LaserCut5.3 Software is ok, locked up a few times. bit slow, but easy to use, don't like that it is dongled. installed easily enough on windows, CD's supplied had one scratch on it, and one of the SHX fonts was unreadable but i found it online.

    Initially we were going to build our own controller for it, but the leetro hardware seems ok, it needs some shielding though. the current idea is just to write our own printer driver around the leetro DLL's instead.

    Also been looking at the reci W6? with the dy20 psu replacement, the machine has a suitable cut out for an extension box. (quoted $1500 plus shipping)

    So far its been pretty good, under $4,000K. Pretty happy with it overall, definitely room for improvement but nothing that's been a deal killer, though the grounding needs to be better.

    we're gonna get the rotary attachment, though i almost died laughing when i saw some people want $1,000 for it.

    tonight we took apart the z table so that we could align it, the hpde/nylon bearings use to lift the table were loose too, so when it changed direction it lurched.

    the two steppers to lift the Z table are connected together and driven by one controller.

    we took lots of pictures and are going to write a longer post with details on everything we've found and fixed. We will probably replace the entire case since nothing is square or aligned to anything else.

    Similar Threads:
    Last edited by charliex; 06-13-2012 at 04:09 AM.


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    Last edited by G.Weike-Abby; 06-12-2012 at 12:24 AM.


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    Uploading some pics.

    The inside of the focus lens


    You can see the black specks in this one a little easier, this is day one.


    case is cracked at the hinge point. the case is just spot welded together so its an easy fix.


    other mirrors, we replaced with the ii-vi's one of them was completely loose, so good idea to a full inspection of the machine before you operate it.






    These were loose causing the z table to lurch when it changes direction. The tolerance on the fitting is not great. angle iron to hold the table on.


    The design of the Z table is interesting its driven by two steppers that are spliced together from one controller, which means that invariably they'll slip and be out of alignment


    there is no bottom limit switch, and the one limit switch doesn't take into account the table height, so head crashes are easy. We're changing this out to a blade off work surface and optical breaker instead


    the wiring is neat, the controllers are decent enough, though we'll change those too.


    There is some fault in the wiring for the case/chassis/gantry that means you get a shock if you complete the ground path.

    the bolts that came loose were mainly the chains that do strain relief with the panels open, the panel locks also stripped since they were probably yanked out during shipping. May not want to ship them locked in future, though they are wrapped tightly in cling film so its hard to see that the panels flapped loose in shipping.



    I have a bunch more pictures to write up. More than likely we're just going to build a new frame for the machine, since none of it is aligned then transfer the laser bits into that, also increase the bed size. It'll be an interesting project.



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    Thanks for the writeup... I will be receiving my LC1290 in less than an hour so Ill be going through all the same soon.

    As to controller options I was actually thinking about upgrading the controller with one of these two:
    2012 Commercial DSP CO2 Laser Engraving/ Cutter Controller. Support CorelDraw & AutoCad

    DSP laser controller, co2 laser controller, diy laser cutter, laser cutter controller

    Will eventually be doing more research to determine if its worth the money and trouble of installing or not.

    Phil



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    cool i've read varying things about them, so it'd be good to get some first hand info.

    The Leetro DSP based controller seems pretty strange to be honest, I'm not entirely sure what the DSP is being used for , maybe calculating trapezoidal speeds or handling the servo pulses. Everything as far as i can tell gets sent over as individual points.



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    Got everything setup now and am trying to get alignment... I find it really odd the whole outside of the laser was covered in a thin film of oil though.

    Phil



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    you're lucky ours was like a greased pig, i'm assuming it protects from the sea shipping environment.



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    Quote Originally Posted by charliex View Post
    you're lucky ours was like a greased pig, i'm assuming it protects from the sea shipping environment.
    Mine was in pretty much the same condition.. I have been cleaning grease off of all kinds of stuff.. there were puddles of it inside the laser.. its pretty messy...


    Now if only i could get the damn thing aligned!!!



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    Default gweike

    Hi Phil,
    a "the whole outside of the laser was covered in a thin film of oil though.
    " to prevent the rusting during the sea transfer,hope it didn't bring much trouble to you

    Best Regards
    Lucy Lee
    G,WEIKE LASER
    han@wklaser.com


    Quote Originally Posted by phylo View Post
    Mine was in pretty much the same condition.. I have been cleaning grease off of all kinds of stuff.. there were puddles of it inside the laser.. its pretty messy...


    Now if only i could get the damn thing aligned!!!




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    Quote Originally Posted by gweikelaser View Post
    Hi Phil,
    a "the whole outside of the laser was covered in a thin film of oil though.
    " to prevent the rusting during the sea transfer,hope it didn't bring much trouble to you

    Best Regards
    Lucy Lee
    G,WEIKE LASER
    han@wklaser.com
    It wasnt to much trouble and I figured that the reason for it was to prevent corrosion on the voyage here to the US.

    Phil



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    Quote Originally Posted by charliex View Post

    Ordering was easy enough, $700ish to broker it.
    Hey Charliex, can you expand on the $700 broker fee? Is that the duty/customs fees? Or was that the total cost, including the crane you had to rent?

    What's the shipping time from China to LA?

    Thanks



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    Quote Originally Posted by atv2 View Post
    Hey Charliex, can you expand on the $700 broker fee? Is that the duty/customs fees? Or was that the total cost, including the crane you had to rent?

    What's the shipping time from China to LA?

    Thanks
    that was just the broker

    400 for the crane

    couple of weeks iirc



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LC900N GK weike 90W laser cutter review.
LC900N GK weike 90W laser cutter review.