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Type: Posts; User: ninefinger

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  1. Replies
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    Re: MD001 cnc conversion

    what kind of resolution do the encoders on the servos provide? The biggest remaining reason to gear down is to effectively multiply that resolution if needed, but somehow I doubt that is the case. ...
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    Re: MD001 cnc conversion

    No direct experience but seen a lot of youtube videos of people who have used the Masso touch and it seems quite nice, and intuitive. For a machine that you just want to use, it seems to be a great...
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    Re: MD001 cnc conversion

    You probably don't need the external support. The issue is that with the dovetail slides the weight of the head tries to pinch the 2 sides together. With linear guides that pinching force just...
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    Re: New ballscrews?

    This forum (don't know about the rest of the site) just dropped in participation last few years. I make it back in here once in a while but not more than probably 2 times a month.
    I'm in similar...
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    Re: Inconsistent Rotary Stepper positioning

    I've had an issue before like this - here are my suggestions to look at:
    1. Test at a slow speed - this puts the motor in its peak torque band (eliminates "binding" as a suspect)
    The next one is...
  6. Re: Sherline DRO- Comments about an improved version- Owners and non owners

    I don't own a sherline, but feature wise, the obvious ones I want / use - switch between metric and imperial, for lathe work ability to change between diameter and radius measurement. And for me, ...
  7. Re: Schematic for Industrial Hobbies CNC mill controller

    you could try asking in the RF-45 sub forum as well, the IH 12Z is a derivative of the RF-45.
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    Re: Info on Compact 5 CNC Lathe

    I keep meaning to do a proper write up on my conversion but never spend the required time.

    The quick description is:

    I replaced everything electrical except the spindle motor itself. I got a...
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    Re: rf31 benchtop Help Needed

    I use whatever I can get my hands on, usually some left over CAT5 or 6 cabling or if I'm lucky I have some real communications wires (24AWG) with shield, but the shielding doesn't usually do much if...
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    Re: Zx45 z axis column flex solution?

    Thanks for the update, great to hear it worked.
    Now I just need to make mine. I started, and cut up some 1" square tubing to weld into a brace, but ran into my poor welding skills and decided to...
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    Re: HBM Profi 45 conversion

    Availability, the single nuts were far more readily available than the factory doubles, get the factory made ones if possible to save yourself the hassle, plus it may actually be cheaper to get one...
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    Re: HBM Profi 45 conversion

    Uou sound like your doing what I did 10 years ago.


    I tried calculating everything, and designing to optimize the mill cnc conversion based on math.
    What I was missing was experience, and...
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    Re: HBM Profi 45 conversion

    Regardless of the control system you need to reduce or eliminate as much backlash as possible. Backlash will kill a tool in a blink of an eye especially a small diameter tool.. If you're climb...
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    Re: compact 5 cnc

    https://www.cnczone.com/forums/attachment.php?attachmentid=456126&stc=1https://www.cnczone.com/forums/attachment.php?attachmentid=456128&stc=1https://www.cnczone.com/forums/attachment.php?attachmentid...
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    Re: compact 5 cnc

    I missed this post. I guess I did provide some info on what I did, but its out of date now. Let me compile an update on where I'm at currently.

    Long story short - I gave up on the Beaglebone SBC...
  16. Re: New to me EMCO compact 5 pc gonna need some help

    I converted an Emco Compact 5 CNC. I ditched the original steppers and electronics and swapped in cheap stepper drives and new stepper motors along with a MESA 7i76e interface card and Linuxcnc. I...
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    Re: Zx45 z axis column flex solution?

    I may try 1 or 2 of the exoskeleton members (think C clamp working in reverse) to see if it creates any noticeable improvement. If it does then I'll add more. I just need to relocate my home/limit...
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    Re: Zx45 z axis column flex solution?

    Further to above point 3 - I would want to measure the deflection at the sides before doing this - if all or most of the flex is in the dovetails this won't help much (but it looks neat )
    .
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    Re: Zx45 z axis column flex solution?

    Lots of solutions, just picking the right one for your situation is the hard part. Everyone has an opinion on which solution is right, I'll list the ones I know of:


    Linear rails - mounted to...
  20. Re: eBay 3 axis axis servo motor/driver package questions

    Your power supply will has 2 outputs at ~72VDC each, look at the wiring diagram that came with it. Each output has a terminal block for convenience so you can easily connect direct from those...
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    Re: Getting False Limit Switch Triggers.

    What type of limit switch are you using? Actual switch? Proximity (if proximity is it NPN or PNP)? Key bits of info missing there, as well as how they are wired (voltage and normally closed or...
  22. Re: eBay 3 axis axis servo motor/driver package questions

    I can't comment on unccnc as I know nothing about it, but I can say that LinuxCNC along with an Ethernet Mesa interface card (in my case the 7i76e for "steppers") has been great - and the latest...
  23. Re: eBay 3 axis axis servo motor/driver package questions

    Let me ask you: Do you think that $1100 spent on an ebay package is a bargain versus $1575 from a company that does this as its main business and has been around a long time (i.e. DMM-tech ...
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    Re: HBM Profi 45 conversion

    Late to answer but this may help some others with the same question.
    If you are talking about belt or direct drive for the axis motors, its all going to depend on your motor selection and screw...
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    Re: PM-932m CNC Conversion

    https://us.misumi-ec.com/maker/misumi/mech/product/bs/choice/choice06.html

    There are others too that are online - you need to know / assume a bunch of stuff (Mass, acceleration, max velocity,...
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    Re: PM-932m CNC Conversion

    While I appreciate a robust build I tend to also dislike the "bigger is always better" approach as it is wasteful and not necessarily true.
    IMHO the 25mm ballscrews are way too big for this...
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    Re: PM-932m CNC Conversion

    Glad you talked to one of the 2 vendors - I think you'll be very happy with that setup.
    As far as the PC goes - you may want to have it closer to the screen depending on where the electronics box...
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    Re: PM-932m CNC Conversion

    I'd ask DMM for their recommendation on controlling the servos. They take step & direction inputs so may be better with a "stepper" control board rather than a servo control board. The drives...
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    Re: speed vs torque graph for stepper?

    Well, the OP is converting a Sieg X2. I highly doubt that either the max speed or the max torque will ever be needed unless its being programmed for self destruct mode.

    Hansw3 - you are best off...
  30. Re: JET GHB-1340A CNC Conversion (CAD Model link)

    An issue you will run into trying to use the CNC machine in a truly manual way is that the "force feed back" you are looking for will actually back drive the ball screw if you don't keep it held all...
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