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Thread: MountainCrafts Router/Plasma Build Thread

  1. #49
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    So I can assume 1/16" - 1/8" is a good gap?

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  2. #50
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    Quote Originally Posted by Mountaincraft View Post
    So I can assume 1/16" - 1/8" is a good gap?
    Yes, in my opinion. There won't be enough angular movement in the coupler to cause it to close the gap and butt against each other. The coupler can wind and unwind a very small amount with very high acceleration and directional reversals. Normal values for acceleration shouldn't cause any problems.

    CarveOne

    CarveOne
    http://www.carveonecncwoodcraft.com


  3. #51
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    Upon rethinking that last post, I don't think the shafts should extend into the helical spring area. I've been using the DumpsterCNC Delrin couplers which only have maybe 1/4" of area that can bend with an angular misalignment in shafts. Helical couplers have a longer helix length.

    CarveOne

    CarveOne
    http://www.carveonecncwoodcraft.com


  4. #52
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    This would be an area where Ahrens input would be helpful... especially where as my screw is not true and can wobble..

    However, the Z axis screw is probably only about 20" between bearing supports, and for the most part will not be making large movements, as the majority of material I'll be working with will be an inch and a half thick or less.....

    However, at some point down the road, I plan to add an indexer.. which is why I will have about an 11" Z travel range...

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  5. #53
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    Quote Originally Posted by Mountaincraft View Post
    I need to know how far the motor shaft on the 640 oz stepper he sells protrudes past the bottom of the Z axis mounting plate.... I'm also needing to know how much of a gap should be between the end of the motor shaft and the Z screw (inside the helical coupling).. This information is necessary for me to know how long to cut the 4" flat bar...

    If I had the motor, it would be a no brainer... but I thought it would be nice to work on that stuff while waiting to get the moola together, so that it's out of the way and the work doesn't all stack up at once...

    It's not a huge deal...
    Can't help with that, don't have those motors
    The other thing I'd like to know, is the difference between the MeanWell switching power supply he said he could supply me (not listed yet on their website,but I'm pretty sure he's talking about the SE-100-48) and the Torroidial Power Supplies from Keling... Is one better than the other? More reliable? Is the main difference just the enclosure and fan on the meanwell?
    The Meanwell is a regulated power supply, has overvoltage protection, and a whole bunch of other stuff. The toroidal has none of them, but is much simpler. Lots of folks get by with unregulated supplies. I like regulated myself.
    The meanwell is considerably more expensive, but may be worth it... I need some 'sales' help here...

    There is zero info on his website regarding the motors other than the voltage, current, and in oz rating.. torque curves, drawings/dimensions and all that are non-existent...

    I like the idea of his stuff being plug and play, but I'd really like some more info on it all... It's pretty vague... and the money for this stuff adds up.... I don't mind paying the slight markup for all this stuff that he charges, as I think it's all quite reasonable, but a little hand holding is expected in return...

    Also, one thing I haven't asked him yet, but I need to know, is the BOB... what do I need? What is recommended with his system?...
    Breakout Boards

    Take your pick. Depends on how many motors, and what other inputs and outputs you need
    I will be using the super-PID controller for the router listed elsewhere here.. I will be needing zeroing/homing switches, E stops, tach input, etc... there may be other inputs I am not yet aware of that I need.. AFAIK, the BOB is the interface for all of this stuff, and I need to select one that has all the ins/outs required...
    Yup, that's how you choose.

    Note that with Mach (you are using Mach, right?) you don't get a lot of advantage in separating out the home switches and limit switches. On a 3 axis system, one input is actually enough. On a 4 axis system (dual Y drives), you want a separate home input for the "A" axis. You need E-Stop. Tach goes to the Super PID, right?. You may want relay control for spindle.

    Finally, the difference between the Gecko 201x and 203V? I think it is just 'protection'.. Is the extra 35 bucks worth it? are the bulletproof claims exaggerations? Are there other differences than the protection? Is this something I should not worry about and just buy the cheaper 201x drivers?
    Gecko's are pretty bulletproof. You CAN blow them up, but it's pretty hard to do it. You are probably okay with the 201.

    You might consider just getting the G540. It's 4 drivers and a BoB in one package. Very high quality, very nice device.



  6. #54
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    Quote Originally Posted by brtech View Post
    You might consider just getting the G540. It's 4 drivers and a BoB in one package. Very high quality, very nice device.
    Won't handle the current, otherwise I'd be all over it at less than half the price...

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  7. #55
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    On the C11G card info (at CNC4PC), it says the card works with Mach2.. This card works with Mach3 also, right?

    Also, I'm using 4 axis control (two on X axis), this BOB will handle that right?

    If I want to add an indexer later, will this card handle the fifth axis? Or will I have to get a different card? If so, can a basic no frill card be 'added' to the setup, or will I need to replace the entire card with a different one?

    Thanks, getting ready to order, and I want to make sure I have something that will not only do what I need, but allow a little flexibility for the future...

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  8. #56
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    Quote Originally Posted by Mountaincraft View Post
    On the C11G card info (at CNC4PC), it says the card works with Mach2.. This card works with Mach3 also, right?

    Also, I'm using 4 axis control (two on X axis), this BOB will handle that right?

    If I want to add an indexer later, will this card handle the fifth axis? Or will I have to get a different card? If so, can a basic no frill card be 'added' to the setup, or will I need to replace the entire card with a different one?

    Thanks, getting ready to order, and I want to make sure I have something that will not only do what I need, but allow a little flexibility for the future...
    Yes, it works with Mach3, and with EMC2. I don't think it really cares which software drives the board as long as the I/O parameters are set right. I use this board with Gecko G203V, Mach3, on a slaved X axis. I think it handles just four motors and you would need a second C11G and second parallel port card to get more step and direction lines for motors 5 and 6.

    CarveOne

    CarveOne
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  9. #57
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    Should I be planning to get a dedicated parallel port card for the PC, or is the one that is built in on the motherboard safe to use?

    Thanks,
    Mark

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  10. #58
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    Ordered the rack gears from moore gear this afternoon... Giving Ahren some more money this weekend... I think.. awaiting e-mail response first (so that I know how to spend it) ...

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  11. #59
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    Which is better, the CNC4PC C11G, or the PMDX 132?

    The PMDX 132 is $183 but when the geckos are purchased with it, the geckos are only $139... If I buy direct from Gecko, I have to pay state sales tax of $50 for the 4 drives...

    The PMDX seems to have similar features, but also allows the gecko drives to plug in and mount directly underneath the BOB...

    Although the PMDX is a more expensive board, with the sales tax savings, and the gecko 203v discount, that PMDX combo actually comes in a few dollars cheaper than buying the drives directly from gecko and the C11G board directly from CNC4PC..

    But I have no idea as to which is considered better quality, better performing, etc... nor which is more feature packed...

    There is also the PMDX 134.. which seems to be missing the charge pump (which as far as I can tell is an auto shut off safety device) for only $55... which would allow me to have the drivers and BOB delivered to my house for less than I could buy just the drivers from gecko... But I don't know if this BOB is inadequate or ill advised for my needs.. even for the short term...

    Could use some veteran advice here...

    [URL="http://www.cnczone.com/forums/cnc_wood_router_project_log/124543-mountaincrafts_router_plasma_build_thread.html"][U]4' x 8' CNC Wood Router Project[/U][/URL]
    [U][URL="http://www.cnczone.com/forums/woodworking/135576-home_made_drum_sander.html"]Home Made Drum Sander Project[/URL][/U]


  12. #60
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    I don't have any opinion or experience with the PMDX boards. They end up being similar to the G540 in respect to packaging the drives and BOB functions in one package. Hopefully, someone will be able to help you with that soon.

    CarveOne

    CarveOne
    http://www.carveonecncwoodcraft.com


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MountainCrafts Router/Plasma Build Thread
MountainCrafts Router/Plasma Build Thread