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Type: Posts; User: RCaffin

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  1. Re: HELP: Need to mill alu, brass & copper with single flute endmill

    Soft aluminium, soft brass and copper - a world of pain without an air blast to clear the chips and lubrication to prevent 'Built Up Edge'.

    Cheers
    Roger
  2. Re: Is there a single-line, connected-text font in SHX,SHP,LFF format?

    There is a extra charge from our CNC manufacturer for lifting the pen when etching these strings of text so I need one line
    Amazing idea. Do they say why? How much is the 'extra charge'?

    Cheers...
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    Re: Panasonic servo

    Yes.
    Just limit the voltage and current. The servo drive should allow that.

    Cheers
    roger
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    Re: Advice on milling slots in 1mm pcbs

    I use a vacuum table for PCBs. I can shave the surface before I start so it is FLAT. I start with a thick top!
    Some vacuum tables have holes everywhere. That is unnecessary and expensive.
    A single...
  5. Re: X/Y motors all of a sudden chattering/struggling under no load

    Yes, G61 would do that.

    Cheers
    Roger
  6. Re: X/Y motors all of a sudden chattering/struggling under no load

    Which only goes to show just how many causes there can be for 'problems'. :p
    And how really difficult it can be to diagnose things when one have only half (or less) of the info one needs and would...
  7. Re: X/Y motors all of a sudden chattering/struggling under no load

    Most likely (I think) your servo drive is oscillating. Have you changed ANY parameters in any of the drives recently?
    Or, perish the thought, there could be a component failure in the drive in the...
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    Re: Spindle Index Noise

    You need to measure the actual voltage going into the BOB. It may be hovering right at the witching threshold.
    Electrical noise is probably also a problem.

    My Mach3 spindle DRO works fine.
    ...
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    Re: CNC machining soft aluminum

    Hi Pete

    Ah so - LM24.

    Machining practice [for LM24] is similar to that for other Aluminium castings alloys containing Silicon. Whilst there is not the tendency to drag associated with high...
  10. Re: 6063 aluminum profile machining - slipping and shifting

    Well, stop it from shifting!
    Try adding clamps beside the profile. Top clamps will hold it down, but are often not good enough to stop sideways movement Been there.

    Cheers
    Roger
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    Re: PETG Forming Question

    Opinion only, based on vacuum-forming work done for me decades ago:
    (Dear me - that long ago?)
    If the first material vacuum-forms very well, I have some doubts whether it is standard PETG. Of...
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    Re: CNC machining soft aluminum

    I don't think the problem is in the cutter, but in the lack of lubricant on the cutter.

    I use an air blast to clear the chips and a pulsed misting of 3:1 kero/olive oil. If I see any scruff on the...
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    Re: Best CNC controller

    Go back to Mach 3 & ESS
    You have Mach3 and the ESS and all the machine HW. Zero cost to try it.

    Cheers
    Roger
    (W7, Mach3 .062, ESS, Geckos)
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    Re: AC servo recomendations

    Hi WesM

    Not so fast.
    The spec on the drives is 220 V +/- 10%. That means they can take 220 + 22 = 240 V. That is very close to what you have right now.

    The next thing to consider is just what...
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    Re: Best CNC controller

    In Mach4 you can edit the screen within the session, and on the fly.
    Now that is something I did not know.

    I guess what we are seeing here is a reflection of the huge increases in performance of...
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    Re: Best CNC controller

    Hi Craig

    I have not really played with Mach4, so I cannot comment on the relative ease of modification.
    I was only saying that I found modifying Mach3 to be fairly easy.

    Cheers
    Roger
    PS: am...
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    Re: Best CNC controller

    Hi Craig

    Among the things that Mach4 does, and so much better than Mach3, is that the screen is highly user editable. If you want a particular screen you can make it.

    I have to dispute this bit...
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    Re: Best CNC controller

    W7, Mach3, ESS, Gecko servoss, 4 axes. Steel, titanium, aluminium, plastics.
    No mucking around. I am 'customer support' :p
    Has been running very reliably for many years.

    Cheers
    Roger
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    Re: Best CNC controller

    Could it be that we have two different groups here? One group keen to innovate, develop and explore, and another group keen to use their machine to make things right now.

    For sure, I can see the...
  20. Re: New Sainsmart 4040 Pro Owner - with newbie questions!!

    For PCBs I use the pins as described by Craig, with a vacuum table. Works very well.

    Cheers
    Roger
  21. Re: looking for someone to do lathe work for zero cost for my experimental setup

    Transmutation of lead into gold.
    Chuckle.
    Could be a bit of a scam.

    Cheers
    Roger
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    Re: Which spindle type should I use?

    600 W Baldor DC PM motor, 3,500 RPM max, huge overload capacity. Steel, titanium anything.
    I find 600 W quite enough.

    Cheers
    Roger
  23. Re: New Sainsmart 4040 Pro Owner - with newbie questions!!

    Me, I would put two hard straight alignment edges on the table, on the X and Y axes. I would align the spindle to these edges (ie X=0 and Y=0).
    If necessary you can change the X & Y zeros later, by...
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    Re: Best CNC controller

    Homework - yes indeed!
    Cheers
    Roger
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    Re: Best CNC controller

    Yes Mach 3 absolutely works, but for how long?
    Contrary to some popular rumours, software does NOT decay with time. A bit is a bit. Backups help of course.

    Mach3 runs perfectly well on W10 and...
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    Re: Chips welding to the end mill

    I machine a lot of hard and soft Aluminium and various plastics.
    I use a strong air blast with a pulsed misting. The air blast prevent second cuts, and the mist keeps the cutter 'wet' so chips don't...
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    Re: Best CNC controller

    Hi Roger

    Stick with what you have got: Mach3 + ESS. Works just fine for me.

    Cheers
    Roger
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    Re: Best CNC controller

    Hi Craig

    Well, I suggest we are both correct.
    There is no questiont that NIST G-code is a Standard.

    On the other hand, we all know that many older companies pursue variations of their own. I...
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    Re: Best CNC controller

    Hi Craig

    That is interesting. I was not aware of the difference. Thank you.

    I avoid the whole problem by never relying on carry-overs, or modal defaults. I spell the parameters out in full each...
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    Re: Best CNC controller

    Hi Craig

    but if you do issue a new G82 then you must do it completely.
    I wonder whether that restriction is in the published NIST Standard? I read up as much as I could find (at the time) and I...
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