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Type: Posts; User: dazp1976

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  1. Replies
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    Re: CNC Red Cam Help

    Desktop pc's with parallel port for that type board (DB25 parallel connector).
    Laptops for usb and lan boards.

    Get a cheap desktop or get a new usb or lan board.
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    Re: Stepper stalls high speed

    I had to settle with 3mh around the 570oz holding torque size of motors.
    You can find 2mh on closed loop ones but can't afford/justify getting some yet.
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    Re: Stepper connector

    My X2 machine has Nema23's (5A) with GX16 connectors.
    My PM machine has the Nema34's with GX20's.

    I recommend either.
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    Re: Stepper connector

    I use aviation GX20 connectors for my nema34 8A with 18AWG wire. Were good price on ebay.
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    Re: Shop computer network issues

    I have exactly the same problems with this Microsoft garbage!!!
    From the 7 & 10 machines I can access the public folders on the XP ones but can't get it working in the other direction.

    All I do...
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    Re: Newbie problem-wiring in spindle motor

    My feeling is that it was never connected in the first place. Previous user ran the axis cnc and the spindle from the manual potentiometer.
    No real signs of any on/off or speed voltage connections...
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    Re: Newbie problem-wiring in spindle motor

    I would say the ones in the red square are there for an optional 4th axis.
    Reckon it needs a speed control board as suggested earlier.
    What's that larger box on the end of the rail next to the red...
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    Re: Picking a stepper motor

    Show me a stepper that is that low?
    On a small budget, a closed loop I can only see as low as 2mh in a nema 23. Even a normal stepper I can only see about 2.5mh. (around the 500oz/in mark)
    The...
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    Re: Picking a stepper motor

    I just replaced my Z motor. I had a 1700oz/in 4 wire (nema34) that was loud as heck and slow through resonance (8mh inductance).
    The new one is from Longs on ebay.
    1090oz/in 8 wire (wired...
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    Re: speed vs torque graph for stepper?

    The Sieg X2 was my first dabble into cnc stuff. The BIGGEST mistake I made is using thrust bearings on the ballscrews.
    AC bearings are the best thing to use by a mile.
    The bearings don't sit right...
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    Re: speed vs torque graph for stepper?

    I would not have bought it as a kit.
    I personally would have got different drivers.
    With 2.5mh inductance 48v will be fine.
    The issue for me is the 5.6A limit on the drivers.

    When microstepping...
  12. Re: Suggestions for Inexpensive Computer(s) for Windows/Mach 3, Fusion and for LinuxC

    Not sure about availability of XP anymore. I luckily have my retail discs from 2005.
    As for Windows 7 I bought a product key from ebay for £5. Downloaded the OS from Microsoft as ISO. Created...
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    Re: Building my first CNC - final questions

    I'm using one of these type boards as Ger mentioned earlier. £5 ebay special....
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    New/latest laptops a bit junk

    I am really miffed about new machines now.
    It's all gone more about energy efficiency in Europe (just like vacuum cleaners that can't suck a pea off a carpet) .
    The power of the cpu,s has gone...
  15. Re: Suggestions for Inexpensive Computer(s) for Windows/Mach 3, Fusion and for LinuxC

    I'd get a refurbished Dell i3/i5 6th Gen.

    I actually bought an older Dell not long ago (i3 3rd gen E5430 under £100gbp) and it is pretty damn good :)
  16. Re: Suggestions for Inexpensive Computer(s) for Windows/Mach 3, Fusion and for LinuxC

    A PC such as this one:
    https://www.ebay.co.uk/itm/Dell-PC-Intel-Core-i3-Full-System-8GB-500GB-win-10/223353075264?hash=item3400e17640:g:bcEAAOSw4EJcyDyo
    Even a 2.6 core 2 duo would be plenty. 8gb...
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    Re: UCCNC and Win10 questions

    Why don't you just make your PC dual boot. Partition the drive into 2. Keep Win10 intact on 1 and run Win7 on the other.
    You can get a Win7 key for next to nothing on bay then download Win7 32bit...
  18. Re: How to remove pulley from Belt Drive upgrade on X2 Mini Mill

    I used a screwdriver to prise my pulley off being careful not to damage it.
    The plastic gears all come off easily once the spindle and head are in bits.
    The hardest part is getting the keyway keys...
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    Re: problem motors not moving

    Edit: Maybe ignore me. Just read about the jumper (X7) swapping the 5v common around to pos. D'uh. (I assume you did that one)
    Manual....
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    Re: Help with setting Steps per Unit

    Fair enough.
    Has he set native units to inch?
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    Re: Epoxy Granite Portal Machine

    Most I've seen is about 6000rpm (think was Mitsubishi or something). That's like about £1000 plus. Then you need a drive to match.
    Generally ones less than £1000 go to 3000rpm.
    Likely have to...
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    Re: Epoxy Granite Portal Machine

    Hmmm.
    On a mill I've used some decent AC bearings. Double nuts shimmed as tight as they can go, jaw couplings, a fair bit of work.
    I can't get lower than 0.03mm (0.0012").
    Some expensive linear...
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    Re: problem motors not moving

    If you have the 'step/dir' signal from bob going to the negative- connection side on drivers you need set active low.
    If connected to positive+ then set active high.

    If/when they eventually move...
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    Re: problem motors not moving

    Have you wired up the 'enbl +/-' on the drivers (enable) to the bob or left them disconnected?
    If you do have it connected you need to set up an enable pin.

    I'm guessing you have no physical...
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    Re: Help with setting Steps per Unit

    Are you forgetting to add your screw pitch to your math?
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