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Type: Posts; User: awerby

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  1. Re: Running a Gerber Sabre 408 Without a Spindle

    Read the manual that came with your VFD, There's probably a way to connect it to the Gerber control so that the control issues a signal which varies in voltage (usually 1-10, or 1-24) that controls...
  2. Re: Rookie question on minimum spindle speed of a HSD spindle

    It sounds like your machine came with a general-purpose controller which is suitable for a range of spindles, not just the HSD. I wouldn't run the HSD much lower than 18,000 RPM. Just don't use the...
  3. Re: Wanting to build 4x2 4 axis machine. Where to start

    If this machine is to be dedicated to 4-axis work, I'd say keep the Y axis short, like 24" or less. Profile rails are a good idea; they're much more rigid than the round ones. Keep the Z axis short...
  4. Thread: CNC 'jumps'

    by awerby
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    Re: CNC 'jumps'

    I doubt that a crash like that would disrupt your software settings. But it certainly could throw bolted-on rails out of alignment. If there are suddenly a few places where the motion of an axis...
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    Re: How to Start Clothing Business from Zero?

    Get some clothing. Sell it. Repeat with more clothing, etc.
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    Re: CNC converted G0602 is all over the place.

    That doesn't look too bad to me. A lathe like that isn't going to reliably hold tolerances finer than .001", and if you're off by .0005" you have to double the inaccuracy on a turned part. Spend...
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    Re: The spindle is not starting

    Is there an interlock between the water cooling system and the spindle's on-off function? Is the pump running when you're trying to trigger the spindle?
  8. Re: Need help, building CNC machine for steel and wood

    I'm looking at your picture and trying to figure out what's going on. It looks like you've got two frames mounted vertically, quite close together, that each have a narrow stage which moves up and...
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    Re: Need advice on my 24" Y axis build

    [It would be easier to help with this if everything was in the same thread. Are you building your own clay extruder, or buying one prefabricated?]
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    Re: The spindle is not starting

    Have you asked the seller about this yet? Apparently they do support through ebay messages; how is that working so far? If you can't get it to work, they claim to have 12 month replacement warranty;...
  11. Re: Looking to get New motors, Any advice ???

    That would be a better motor for your setup than the one you've got, which has too much induction even for your high-voltage supply (it wants about 96 volts to run optimally). But it's really rare...
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    Re: Newbie With Facemill Danger..LOL

    How deep a cut were you attempting? Especially on a small mill like yours, a facemill can't be expected to take a very heavy cut. Try to do as light a cut as you can (like .005"), using plenty of...
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    Re: Table origin shifting after setting

    It sounds like you're losing steps. This happens when stepper motors try but fail to reach a commanded position. In an open-loop stepper system, there is no feedback mechanism to compare the...
  14. Re: Stepper Motors not working on new Sainsmart MX3 3018

    There may be an issue with your USB adapter, then. Which one are you using?
  15. Re: what to do with this 3+ axis dental cnc machine

    Your best bet will probably be to strip it down to the base components, losing the proprietary control system and substituting a computer running something you can figure out how to run, like...
  16. Re: Stepper Motors not working on new Sainsmart MX3 3018

    Are you running this machine off the parallel port or are you using a USB or ethernet adapter?
  17. Thread: 3D scannner

    by awerby
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    Re: 3D scannner

    Interesting. Does this scan continuously until the part is captured entirely, moving the device and part, or does it scan one view, turn off, and then scan another one, collecting a series of scans...
  18. Thread: motor sizing?

    by awerby
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    Re: motor sizing?

    Are you providing a planetary gear for this rotary axis, or just sticking a chuck on the end of a motor? With the gearing, you can use a much smaller motor than with the direct-drive plan. The ratio...
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    Re: Problem with mach 3 when using G00

    It sounds like you've got the anti-backlash settings set wrong.
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    Re: Direction of finish pass

    It sounds like you've got your material cantitevered out into empty space. This, as you've noticed, is not conducive to smooth cutting. I'd suggest supporting the far end and clamping it down (or if...
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    Re: 1.5m by 1.5m cnc at rigidity

    Steel box tubes are stiffer than aluminum extrusions, and cost less. If you build a machine with big enough pieces of box tube and pay attention to details, you might end up with a machine that will...
  22. Thread: Roland PNC-5000

    by awerby
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    Re: Roland PNC-5000

    If it's buzzing, it probably is getting the signal to move, but can't. Since stepper motors themselves rarely go bad, I'd check for mechanical problems first; see if the axis in question moves freely...
  23. Re: Engraving (stone) with 3018 pro for prototype project

    [QUOTE=Itamarg;2329284]Thank you very much for your reply.

    Its common to find flint or other hard yet small rocks inside the limestone, the tungsten carbide can handle it?

    [Maybe, maybe not. If...
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    Cheap Hurco kneemill near Santa Cruz, CA

    This isn't my mill, so please don't contact me about it. I just happened to see the ad in my local Craigslist, and thought someone here might want it:
    ...
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    Re: How to make it stop screeching?!

    It might be time for a spindle rebuild. Sounds like the bearings are going out.
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