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C-BEAM-GTC

Discussion in 'CNC Mills/Routers' started by GinoTheCop, Mar 9, 2016.

  1. GinoTheCop

    GinoTheCop Master
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    I guess its about time to call it "Build Complete".

    It will only have few cosmetic enhancements from now on. (lettering the box and machine's connection panel etc.)

    I have done some cable management for the control box;
    [​IMG]

    And some calibration;

    [​IMG]

    Before the upgrade I was having imperfect circles due to backlash, it now seems pretty good in drawing mode. Hopefully it will be the same when cutting aluminium.

    [​IMG]

    Drawing random circles in different dimensions to check... And it is pretty accurate..
     
  2. GinoTheCop

    GinoTheCop Master
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    And a short video of the first calibration runs.

     
  3. Spark Concepts

    Spark Concepts Veteran
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    Hi Gino's, looking awesome! Quick question on your probing - do you have the ground connected connected to the plate or the spindle? If spindle, try swapping it so that the plate is connected to the Zprobe pin and the spindle/tool is connected to ground.
     
  4. GinoTheCop

    GinoTheCop Master
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    Hi Michael;

    Thanks,

    I have tried to switch the ground connection from spindle to the plate but had the same result..
     
  5. Cleyton Alencar

    Cleyton Alencar Well-Known
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    Hi Gino, man your build is just amazing ! I was planning to do something similar, but your design is just way beyond everything I had in mind previously. I believe I will really follow your design to the letter. Just want to know your thoughts now that your build is completed. Would you change anything ? I also started to play around assembling a Fusion 360 model with OpenBuilds Library 1.5 to assemble the machine virtually first and see what parts to order (I have a C-Beam machine, so will get only the extra parts needed). Started to notice some details like your custom plate for the XY Gantry on both sides of the X axis. Since they are 6mm thick each, I would imagined you trimmed 12 mm from the C-Beam from that axis in order to use the 1000mm lead screw. I am using your model a lot from A360, but can't get the measurements from there. Would you mind sharing your model ? I really appreciate your build man, I think it is rock solid and definitely the approach that I want to take on my upgrade here as well. Thanks man !
     
  6. GinoTheCop

    GinoTheCop Master
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    Hi Cleyton;

    I am glad you like my upgrade plan and thank you for your nice words.

    It is still a bit early to say if I would change anything but still here are a few comments from my point of view;

    1- Plan well and make sure you do not build a machine larger than you would ever need.
    2- I would use a solid piece of steel or at least aluminium on the bottom connect of the two Y gantries (Please see the pic below I used a sandwiched hard wood in between the two 20by20 v slots but still at times they may not be very well in sync for I believe various reasons (one gantry being not very similarly tight as the other one, one being not as well lubricated as the other one etc.)
    3- I have used a 100 mm measurement between the centres of the holes used for wheels on Y gantries. I believe it would be better to use something like 98 or 99 to have more flexible eccentric adjustment.

    Those are the ones I can think of for now.

    My model is shared via fusion360's sharing in my front page and you can get all the measurements from that model. F360 has all the measurement possibilities (a quick search on web would do the trick and you will see its pretty easy once you know how to do it)

    I hope this helps and wishing you the best of luck with your build.

    [​IMG]
     
  7. involved6

    involved6 Well-Known
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    This is outstanding!
    I am on an incredibly limited budget, and had resigned myself to paying for OX plates, as it would be my first build (ever, besides a Prusa kit...), and I have no way of making precision aluminum parts.
    Your plate diagrams might allow me to print/woodcraft these parts to get me up and running so that I can mill out the final plates later. Thank you!
     
  8. GinoTheCop

    GinoTheCop Master
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    You are very welcome.. Glad my work helps you out guys!

    Good luck wth your project!
     
  9. Cleyton Alencar

    Cleyton Alencar Well-Known
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    Thank you Gino for the hints and heads up. I currently own a C-Beam. It works like a charm but i could use some more area. I believe your set up will match exactly what I am looking for regarding size. Anything bigger would be a waste for what I am using it for. About the double Y axis, I always wandered about how they really perform. I am coming from a single gantry
    for that axis and will be moving to two. They need to be absolutely parallel and in sync. Thank you for your advice regarding support on that axis. About the custom plate, I am fortunate to have the C-Beam, will use it to make the plates following your advice and will only disassemble the C-Beam after a test fit, to see if I got it right.

    Glad to know your machine is working as you intended and no changes were needed, that is really hard to accomplish.

    Thank you Gino for your contribution and sharing your build with the community. This build is a really well thought build. I am improving a lot my Fusion skills as I use your model as reference and research. Thank you man, really appreciate it.
     
  10. Kozzy

    Kozzy New
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    This is amazing . Can i have a Parts list, also how much did it all cost you?
    Thanks
     
  11. GinoTheCop

    GinoTheCop Master
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    Hi Kozzy;

    I am afraid I do not have a full parts list in my hand yet.

    I plan to do that but i really cant tell when as I am way busy with my work and studies lately.
     
  12. Sean Trace

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    Hi Gino,

    Reading throught your build discussions has set of lots of ideas spinning. It looks great and seems to also perform very well. Could you let me know where you sourced your 15x120 rails for your base from? These add a very professional look and highly functional benefit I would like to add to my plans.
     
  13. GinoTheCop

    GinoTheCop Master
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    Hi Sean,

    I purchased those from a local manufacturer here in Istanbul.

    I do not know where you are located but I think they do export to number of destinations.

    Here is a link: CLICK
     
  14. Darrell Corpening

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    Love your build, especially the simplicity of the Y-gantry plates and the bottom support adding rigidity.
    Two rookie questions:
    1. On the diagram for the Y-Gantry you show the screws into the end of the C-beam at the top as 5.1mm, yet on the bottom the screws into the two 20x20 v-slot are 6.1mm, why the difference?
    2. Given that you ultimately beefed up the bottom support, would you consider installing a 20x60 bottom support and then move the bottom wheels out a bit with two on each side of the bottom support?
     
  15. GinoTheCop

    GinoTheCop Master
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    Sorry for not seeing this earlier..Been very busy.

    1. The reason why bottom two holes on Y-Gantry are 6.1mm is because I am using M6 screws there instead of M5. The support rail is not a v-slot from Openbuilds, its from local market here and they come with M6 tapping holes. If you will be using standard Openbuilds v-slot there make sure they are 5.1 instead.

    2. I would rather go for a 3 wheel setup on the bottom ; two on the sides and one in the middle. But then again that is totally up to you of course. I find it a bit hard to adjust 4 wheels at the bottom setups.

    Hope this helps.. Sorry once again..
     
  16. Michael Dwyer

    Michael Dwyer Journeyman
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    Gino,

    Why didn't the original clamp idea work?

    Thanks,
    Michael
     
  17. GinoTheCop

    GinoTheCop Master
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    Hi Michael,

    It was me I suppose.. I just couldn't build them well. When someone from another shop came up with the idea of using the ones I have now and when those worked well I just didn't have more time to play with building the original clamp idea.
     
  18. Karl Miller

    Karl Miller Well-Known
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    Hi @GinoTheCop, I like your build.
    I have a couple of quick questions relating the bottom bars connecting the two Y plates:
    1. Did you find this effective, or did it cause problems with the two sides being out of sync?
    2. Did you try using the machine without them to see if there was any difference? It meant to make up for fewer wheels on the Y plates in certain locations?

    I ask these questions because yours is the second design I have noticed this feature on, and I am not seeing what forces it is meant to overcome, but that may just be my ignorance.

    Thank you, Karl Miller
     
  19. GinoTheCop

    GinoTheCop Master
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    Hi Karl,

    Thank you for your comments.

    The idea behind using the bottom Y connectors was to prevent out of sync movement of Y gantries. (This did happen while testing the machine so I thought it would be an additional feature to try and prevent this from happening or at least reduce the chance of that)

    However it did not fully prevent or stop the un-synced movement of the two Y gantries as it did happen happen again in fewer occasions resulting a stall. As I do not have a standard occasion or testing method to see whether this helped or not I am afraid I do not have a certain answer to your question. Would a single steel piece do a better job? I don't know that either as it requires testing creating the same situation and try with and without the bottom Y connector.

    Sorry that does not answer your question but thats where I am standing for now.
     
    Karl Miller likes this.
  20. GinoTheCop

    GinoTheCop Master
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    Today I donated the machine and its control box together with all accessories, spindle etc to Istanbul Haydarpasa Technic High School's Industrial Automation, Automatic Production & R&D Laboratory.

    The students of the school will now have their hands on an open builds CNC Router and be able understand the basics, controls and use a CNC Router in their Lab.

    I am very happy to see the student's joy and sparks in their young eyes.
     
    A.Aznan, danielsancnc, Giarc and 3 others like this.
  21. GrayUK

    GrayUK Openbuilds Team Elder
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    Good Man Gino :thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:
     
  22. Scotty Orr

    Scotty Orr Master
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    This was really a great build! I also really liked these profiles so have been keeping an eye out for them. For anyone from the USA stumbling on this build, Misumi US (and maybe elsewhere) has something very similar (up to 15 x 250 in 8mm slot width for M6 hardware). Here is the USA link: Flat Aluminum Extrusions -No Shoulder- -Slot Width 8mm- | MISUMI | MISUMI USA (BTW, these have bottom slots that accept M5 hardware.)

    They also have these in 6mm slot width for M5 hardware (up to 10 x 70 - which is what I ordered): Flat Aluminum Extrusions -No Shoulder- -Slot Width 6mm- | MISUMI | MISUMI USA
     
  23. caseyjaybenson

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    Great build! I am looking at attempting my second CNC build and I really like your design. Do you have an approximate cost on this build? (sorry if you posted that already, I didn't see anything on price)
     
  24. GinoTheCop

    GinoTheCop Master
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    Hi Caseyjaybenson;

    The cost breakdown for this build was relatively difficult as I sourced the parts from US, UK and locally here too. There were custom plate cost etc but I would imagine it is around 1500 USD including everything. This is a good estimation only.

    Thanks
     

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