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Type: Posts; User: ger21

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    Re: 30x30" open source CNC machine design

    Anything under $5K-$7K is a tradeoff, price vs performance.
    The only thing that matter is if it meets YOUR expectations. For most of the members here, those cheap machines are just not good enough....
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    Re: What downcut bits have a good tool life?

    Try 13,000 rpm, and they should last at least 50% longer.
    Try a coated bit like an Amana Spekta, for even longer life.
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    Re: Budget Spindles...where to start?

    Just be aware that having a high end spindle rebuilt can easily cost $1500 or more. They don't last forever.
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    Re: Building my first CNC - final questions

    Yes, I think so.

    I'd use a handheld router as a spindle before I bought one of those cheap so-called "spindles".
  5. Re: I need some direction on a new gantry build

    A new gantry won't make this go away, unless you'll be using a new Z axis as well?
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    Re: Using a shaper cutter on a 5X router

    Contact some of the big tooling manufacturers, like Leitz or Guhdo, and ask their recommendation for your application.
    Or call Southeast tool and ask what heads they recommend for that arbor.
    You...
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    Re: Looking for a direction to proceed

    You won't be able to get a "good" machine with a low budget, but for learning purposes, a cheap chinese machine from Ebay will work.

    LinuxCNC is the only Linux control software available. You may...
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    Re: Budget Spindles...where to start?

    The most popular by far are the $200-$300 chinese spindles from Ebay or Amazon. Most people get years of use out of them. But if you don't set up the VFD correctly, you can destroy them almost...
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    Re: Looking for feedback on a build idea

    +1

    I wouldn't spend more than $500 for electronics on that C Beam machine. It's a lightweight hobby machine.
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    Re: Building my first CNC - final questions

    Then you definitely want the lowest inductance, and highest possible voltage.
  11. Re: E-Stop getting triggered when interpolating circles

    Assuming you have an Estop button, disable it in UCCNC and see if it then runs OK.
    Most likely a noise issue, I would think.
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    Re: Building my first CNC - final questions

    How are you deiving it? Screws?
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    Re: Stepcraft Homing Function

    DO you have M20350.txt in the correct folder?
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    Re: Stepcraft Homing Function

    There's an errorlog.txt file in the macro folder that will give you some info as to why it's not working.
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    Re: Building my first CNC - final questions

    Yes, I use a UC300ETH, and it is much better than a UC100, as it has more features, and more ports.
    But it requires multiple breakout boards, as it has 5 separate ports. I use the UB1 breakout...
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    Re: Building my first CNC - final questions

    It's always better to use low inductance motors.

    Yes, the UC100 is much better than any chinese controller. But the UC400ETH is better, if you can afford it.
    I would not recommend any chinese...
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    Re: Stepcraft Homing Function

    The standard versions of UCCNC have never done a double homing, so perhaps the Stepcraft version was using a custom macro? That's the only way to do it, I think.
    Lowering your backoff speed should...
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    Re: Building my first CNC - final questions

    It won't hurt anything but the performance. Usually, the inexpensive kits give poor performance.




    Most if not all of the cheap chinese controllers do not support all of Mach3's functionality....
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    Re: BoB selection for closed loop steppers

    The closed loop steppers are wired to the breakout board just like open loop steppers. The loop is closed in the drive, and the UC300ETH never sees the encoder signals.



    Depends on how you wire...
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    Re: Building my first CNC - final questions

    You need a LAN port on the PC, and a Mach3 compatible ethernet motion controller. The most popular is the Ethernet Smoothstepper.
    I'd also recommend UCCNC, though, as Mach3 is obsolete at this point...
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    Re: Building my first CNC - final questions

    Steppers are rated for their holding torque, when they are not spinning. This will be the same regardless of voltage.

    Once a stepper starts spinning, the torque will decrease as rpm's increase....
  22. Re: GRBL 1.1 Cutting arc on the Z-axis using G2 command?

    Yes, you need to change planes. Not sure if GRBL supports G18-G19 though?
  23. Thread: JPG / MeshCAM

    by ger21
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    Re: JPG / MeshCAM

    Yes, but jpg (or other images) won't really do what you want.
    You really want to create 3D CAD models of your grips. With a good model, the machine will do 99% of the work for you.
    If this is a...
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    Re: Fusion 360 subscription changes

    If you pay the $310/year, you can still open your files.
  25. Re: New CNC'er & Seeking CAM Software alternatives.

    That looks like a fairly specialized machine. You might want to look at something like MasterCAM or AlphaCAM, but they aren't cheap.
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