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OpenBuilds LEAD CNC

Discussion in 'CNC Mills/Routers' started by MaryD, Nov 20, 2018.

  1. Giarc

    Giarc OpenBuilds Team
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    Openbuilds parts are open source. Do they distribute parts originally DESIGNED by the Openbuilds team? Yes. That is a true statement. Do they source them from the same suppliers with the same quality assurance standards??? Maybe. But price speaks volumes. According to Makerstore's own words they are not officially affiliated with Openbuilds and they source their products from different suppliers. Sometime earlier this week I saw a post by a person that could not get their steppers working properly because he was following the official Openbuilds documentation but purchased the motors elsewhere (Makerstore). The wire color coding is not a standard so the motors were not wired correctly. So, if you buy "Openbuilds" machines elsewhere, do not expect that official Openbuids videos and manuals will get you up and running with no hitches. You may be doing a lot of trouble shooting - particularly when you get to the electronics. Here is another review here on Openbuilds Makerstore Australia. If you go to the forum home page and do a search of "Makerstore", you can research further for yourself. There are some positive and some negative reviews.

    What I find most impressive about the Openbuilds team is that they will spend their time (which equals money) helping people on this forum get things running even when it was not purchased from Openbuilds. They could just refer the person to the Chines company's customer service forum (which probably is non-existent), but they don't. They still help them get up and running even with competitors equipment.
     
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  2. jbloggz

    jbloggz New
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    Very interesting...
    Thanks for pointing out that thread. I think what they put on their website is quite deceptive. It gives the impression they are affiliated with Openbuilds.
    So you're probably right, they would just source all their parts from China. I suppose a benefit of buying from them (instead of direct from china) is you would be protected by Australian consumer Law, and hopefully they would filter out the bent rods etc.

    I'm not sure why you keep mentioning price as if they are dirt cheap. Makerstore's prices are pretty close to Openbuilds, which is another reason I believed they were affiliated.

    It's just a shame that we (Australia) have no option but to buy clones, either direct from china or through makerstore.

    Thanks for helping me understand the situation.
     
  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Well, for a limited time we offer FREE WORLDWIDE SHIPPING: See blackfriday2019 - now's the time to jump (;
     
  4. Ray Jenkins

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    I am sure that this is covered somewhere but.. I have limited space and would want to make a 1010 LEAD in to a 1075. How hard is this to do and how can it be done?
     
    #694 Ray Jenkins, Nov 29, 2019
    Last edited: Dec 1, 2019
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  5. JC Mazon

    JC Mazon New
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    I have the same problem (space). I just received my Black Friday WorkBee 1010 and would like to turn it into a 1075 or 1000mm x 750mm. I assume it's just cutting some rails to 750mm, a lead screw and removing some links from the drag chain.
     
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  6. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Actually it's a case of removing 250mm from several members. Not all members in the direction you intend to cut down start at 1000mm. But yes, overall it is that simple. Just be sure and get all ends cut as squarely as possible.
     
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  7. JC Mazon

    JC Mazon New
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    I think a 1075 size (3:4 ratio) would be a popular offering because it would fit on a common workbench, table or desk.
     
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  8. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Another nice thing you'll find on a 750mm wide system, a 24" wide piece of MDF which is a stock width at most US home centers fits perfectly between the rails. No need to buy a whole 4x8 sheet just to cut out a wasteboard. (I only know this because I too am currently building a 1075 system.)

    I truly wish OpenBuilds would add 750mm lengths to its ecosystem. It would open a lot of doors for those who just don't have room for a full size machine but need more cutting area than the 5050 systems provide.
     
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  9. Ray Jenkins

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    Thanks Rick. What would be the cutting size for a 1075 and which axis is best to shorten?
    Ray
     
  10. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    My comment was based on shortening the X-axis and that will leave you a cutting width just shy of 20". (With some slight mods you can take that to 21") Length will still be the 32" noted on the sale listing. If you cut the Y-axis the usable width will still be the 29" stated on the listing just the length will drop by 10".

    As for which axis is best to shorten, that is a personal decision. Cutting the X-axis makes for a stiffer machine when it comes rotational flex of the X-axis affecting the quality of the cut. Cutting the Y-axis leaves the X-axis full width and allows for wider stock to be cut. Using tiling (pin registration) you'll never miss the 10" you cut off the Y-axis.
     
  11. RoosterTX

    RoosterTX Well-Known
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    I'd second this recommendation. I bought my steppers elsewhere, and they were just fine, but the colors of the wires did not match up and it took some understanding to get it right. Not complex, just different, and if you're not super handy with such things you could stumble. Multiply that many times over if you piece together the whole machine to save some money. Regarding the comments on customer service, my good experience with customer service at Openbuilds started before I bought my machine. I was scared about buying the wrong thing and spending $2000 on it, but they called me and answered my questions. Helped greatly.
     
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  12. jbloggz

    jbloggz New
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    Does the lead CNC have any issues with the y motors getting out of sync when they are disabled (eg. someone accidentally rotates one of the motors somehow). My current CNC uses dual endstops on the y axis to make sure things are always square when homing. How does the LEAD CNC handle this? I was thinking of just forgoing endstops entirely and putting some hard stops on the y axis, then do the following to home:

    - Jog up close to the hard stops
    - Disable the motors
    - Manually rotate the screw until both sides are up against the stops
    - Re-enable the motors.

    Is this entirely overkill/unnecessary?
     
  13. Giarc

    Giarc OpenBuilds Team
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    I do what you said on mine.

    - Jog up close to the hard stops
    - Disable the motors
    - Manually rotate the screw until both sides are up against the stops
    - Re-enable the motors.

    The only difference I do is I use 1-2-3 blocks between the gantry plates and the end plates the lead screw is mounted in. I can't go to a hard stop on both sides because the limit switch is in the way on one side.
    IMG_20191204_190533278.jpg
     
  14. jbloggz

    jbloggz New
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    So why do you still have the limit switch? Is that just for safety?
     
  15. Giarc

    Giarc OpenBuilds Team
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    To be totally honest, I installed all my limit switches and never got around to hooking them up. They would normally be for safety and homing. However, I start each day that I use it by making sure the machine is square with the 1-2-3 blocks. Then I manually zero the machine where I determine the zero is on my stock material and start cutting. Someday I will get around to finishing the wiring, but in the 3+ years of using this machine, I have not seen the need. One positive, I do not have to worry about electrical noise. ;) I have bought the components (2 years ago) and got around to milling the PCB last year for the board with Optocouplers from the GRBL WIki's gnea/grbl page. So maybe those switches will get hooked up in 2020.:thumbsup:
     
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  16. jbloggz

    jbloggz New
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    How do you use the 1-2-3 blocks to square things? That sounds interesting
     
  17. Giarc

    Giarc OpenBuilds Team
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    I have a set of 2. I know my frame is square so I just jog my y gantry up close to the front plates the screws are attached to then I insert the blocks and hand turn the screws until they hold the blocks in place. You can find them on Amazon.
     
  18. mavu

    mavu New
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    Hi,

    I just started assembling my Lead CNC (from Europe, bought from ratrig.com) and I have a problem getting my z-axis to sit firmly.
    Both eccentric spacers are already adjusted as close as possible, but the part where the router mounts still wobbles by ~1mm.

    I already ordered new (and additional) wheel assemblies, until those arrive, is there anything I can do to make it fit better?
     
  19. Batcrave

    Batcrave Journeyman
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    Two things (unless I get distracted by something shiny, in which case it may be anywhere from one to six things):

    First, I'm noticing that the chips from cutting aluminum like collecting in the upper slots on my X (and, to a lesser degree, Y) axes, and over time it tends to chew up the V-wheels. I notice the slot covers barely/almost fit underneath (sliding the covers underneath is a snug fit, but the wheels will roll over them easily enough) and was thinking they might make it easier to clean the slots. Any chance someone has already tried this and can save me the trouble of discovering for myself why it's a terrible idea?

    And second (also relating to slot covers, oddly enough) is just a quick nitpick note on the LEAD parts list...

    Towards the bottom it lists (as lists are wont to do):
    Code:
    1  Flexible Corrugated Tubing 1' (Black)     https://openbuildspartstore.com/flexible-corrugated-tubing/     SKU 2675-By-The-Foot
    5  Flexible Tubing Clamp                     https://openbuildspartstore.com/flexible-tubing-clamps/         SKU 2685
    1  Flexible Corrugated Tubing - 28"          https://openbuildspartstore.com/slot-cover-panel-holder/        SKU 2675-By-the-Foot
    
    ...and that second "corrugated tubing" points to the page for the slot covers, not tubing.

    I don't know whether it's the URL or the description that's wrong , but one way or another I figure it's bound to confused someone someday.


    -Bats
    (...bound to confuse somebats sometoday?)
     
  20. Blackhorn

    Blackhorn New
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    For the owners, do your spindle mount is steady and solid? I will try to make a video, but I have few loose arround the X axis (if i put some pressure on the front of the spindle mount), seems to come from the flexibility of the CBeam which seems quiet odd according to the shape. Otherwise this issue I have no loose at all or backlash, this machine seems pretty great!
     
  21. Gofertpc

    Gofertpc Well-Known
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    Lead1010 with High-Z Mod. Just finished adding a 100V VFD and 1.5 kw spindle. Openbuilds control is almost working. I can turn on the spindle using M3 SXXXX, Turning off the spindle using M5 the spindle slows down to 6000 RPM but does not stop (I can go through my PD settings and figure that out). I also rewired all connections (motors, limit switches, LED) using shielded cables. My real problem is with figuring out where I screwed up. I can manually trigger all limit switches no problem. I can move the gantry in the right direction on all axis' using the motion control arrows. All of my limits on the left side where I would set X0 Y0 Z0 show as being disabled. I must be missing something in the grbl settings.
     
  22. Batcrave

    Batcrave Journeyman
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    Is that one of the big 80mm spindles? If so, I'd love to hear more about how it works out, and if you run into any trouble with the weight. My Lead's only built half-width right now, but I've been itching to expand it to full-size + High-Z - I'm just curious about what to expect with this ten ton pound* chunk of metal swinging around at the top of that flagpole.

    Unfortunately I'm not going to be much help with the config, though - I've never worked with grbl or OB Control and still haven't even gotten around to wiring my VFD to the PC - but I had the same thought on the speed issue - both of my VFDs (a cute little Leeson Speedmaster on my South Bend, and a big noisy Chinese clunker on the CNC spindle) had a vast array of internal options to tweak, and at least half of them didn't seem to do quite what it sounded like they were supposed to. I built my machine a year ago (minus many months of downtime in the middle) and still don't have the spindle acceleration working the way I want it to.


    -Bats
    *ok, so I have no idea whether it's 10lbs. it could just as easily be 10kg. the only scale I had handy just said "I don't care about the units, it's too many!"
     
  23. Gofertpc

    Gofertpc Well-Known
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    It's only a 65mm spindle. I have two mounting brackets for it. If I can get it to work I'll let you know how well it does. I've been working on the upgrade since November and am finally trying to finish up. It's a chinese VFD and spindle Huanyang VFD.
     
  24. Batcrave

    Batcrave Journeyman
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    Ahh...ok. I was thinking the 120V 1.5kw spindles were all big honkin' 80mm beasts like mine, but maybe that was just for the ER16 versions (if you say you got ER16 in that size too, I'm going to cry).

    You'll probably have an easier time with the mounting the smaller spindle, too. I made a 2-piece bracket from milled aluminum & hose clamps that's working out really nicely (I think there are pics posted here somewhere), but I had a hell of a time getting it squared. Now that I look at it, it probably won't play nice with a stock High-Z, either.

    Sounds like the same VFD, then - or at least clones of each other. About the same timing, too - I got mine the previous Nov/Dec, built the kit in about 48hrs, and then it took me until at least Jan/Feb before it was properly wired, spindled, and ready for cutting (not that the current wiring in any way resembles "proper"). Once its running, it's a nice little machine... at least when I'm not killing PCs, burning up drivers, or battling strange, intermittent stalls.

    -Bats
    (typos courtesy of Samsung handwriting recognition, dumb comments courtesy of Bats)
     
  25. Gofertpc

    Gofertpc Well-Known
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    I hear you. Between work/family obligations I've hardly had any time to work on it. I did get the 6000 RPM issue resolved. PD011 was set to 100 eaning the minimum speed was set to 6000 RPM. Setting it back to 0 fixed that part.
     
  26. Batcrave

    Batcrave Journeyman
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    Woohoo! My guess wasn't entirely off-base!

    -Bats
    (too bad it wasn't the important answer - hopefully one of our more grbly locals can be more help with that)
     
  27. Rob Taylor

    Rob Taylor Master
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    Sounds like hard limits are turned on, but homing is turned off? You should have both $21=1 and $22=1.
     
  28. Gofertpc

    Gofertpc Well-Known
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    Thanks Rob. I'll give it a look.
     
  29. Gofertpc

    Gofertpc Well-Known
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    All settings look correct. $21 and $22 were =1. I just enabled soft limits as well.

    [13:14:24] [ $$ ] $0=10 ;Step pulse time, microseconds
    [13:14:24] [ $$ ] $1=255 ;Step idle delay, milliseconds
    [13:14:24] [ $$ ] $2=0 ;Step pulse invert, mask
    [13:14:24] [ $$ ] $3=3 ;Step direction invert, mask
    [13:14:24] [ $$ ] $4=1 ;Invert step enable pin, boolean
    [13:14:24] [ $$ ] $5=0 ;Invert limit pins, boolean
    [13:14:24] [ $$ ] $6=0 ;Invert probe pin, boolean
    [13:14:24] [ $$ ] $10=1 ;Status report options, mask
    [13:14:24] [ $$ ] $11=0.020 ;Junction deviation, millimeters
    [13:14:24] [ $$ ] $12=0.002 ;Arc tolerance, millimeters
    [13:14:24] [ $$ ] $13=0 ;Report in inches, boolean
    [13:14:24] [ $$ ] $20=1 ;Soft limits enable, boolean
    [13:14:24] [ $$ ] $21=1 ;Hard limits enable, boolean
    [13:14:25] [ $$ ] $22=1 ;Homing cycle enable, boolean
    [13:14:25] [ $$ ] $23=3 ;Homing direction invert, mask
    [13:14:25] [ $$ ] $24=100.000 ;Homing locate feed rate, mm/min
    [13:14:25] [ $$ ] $25=1000.000 ;Homing search seek rate, mm/min
    [13:14:25] [ $$ ] $26=250 ;Homing switch debounce delay, milliseconds
    [13:14:25] [ $$ ] $27=5.000 ;Homing switch pull-off distance, millimeters
    [13:14:25] [ $$ ] $30=24000 ;Maximum spindle speed, RPM
    [13:14:25] [ $$ ] $31=0 ;Minimum spindle speed, RPM
    [13:14:25] [ $$ ] $32=0 ;Laser-mode enable, boolean
    [13:14:25] [ $$ ] $100=199.100 ;X-axis steps per millimeter
    [13:14:25] [ $$ ] $101=199.100 ;Y-axis steps per millimeter
    [13:14:25] [ $$ ] $102=199.100 ;Z-axis steps per millimeter
    [13:14:25] [ $$ ] $110=2500.000 ;X-axis maximum rate, mm/min
    [13:14:25] [ $$ ] $111=2500.000 ;Y-axis maximum rate, mm/min
    [13:14:25] [ $$ ] $112=2500.000 ;Z-axis maximum rate, mm/min
    [13:14:25] [ $$ ] $120=150.000 ;X-axis acceleration, mm/sec^2
    [13:14:25] [ $$ ] $121=150.000 ;Y-axis acceleration, mm/sec^2
    [13:14:25] [ $$ ] $122=150.000 ;Z-axis acceleration, mm/sec^2
    [13:14:25] [ $$ ] $130=810.000 ;X-axis maximum travel, millimeters
    [13:14:25] [ $$ ] $131=730.000 ;Y-axis maximum travel, millimeters
    [13:14:25] [ $$ ] $132=90.000 ;Z-axis maximum travel, millimeters
    [13:14:25] [ $$ ] ok
    [13:14:25] [ $I ] [VER:1.1g.20181112:LEADMACHINE1010]
    [13:14:25] [ $I ] [OPT:V,15,128]
    [13:14:25] [ $I ] ok

    Here is what I am seeing in both mm and inch mode:

    control.JPG
     
  30. Rob Taylor

    Rob Taylor Master
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    For a start, iirc grbl 1.1g was a weird transitional version sent out to vendors but never officially released, I'd update to 1.1h since that's over a year out of date and CONTROL allows you to pretty easily upgrade, there's no reason not to (but save your $$ settings!).

    Other than that, it all looks good. Does CONTROL not allow you to press those setzero buttons when they say disabled? I don't really understand how work coordinates can even be "disabled" considering grbl starts up in G54 mode. It has and is reporting work coordinates, CONTROL just isn't showing you them. But maybe CONTROL wants you to home first before it'll start talking about work coordinates?

    All I can suggest right now, since I'm by no means a CONTROL expert (never used it, sure does look pretty though) is to press that "setzero XYZ" button and see what happens. bCNC shows me both machine and work coordinates at all times, so not being able to see anything is freaking me out. :D
     

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