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Type: Posts; User: RCaffin

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  1. Re: How to generate a Mach3 error when a drive gives a fault output

    Just so.
    For each axis, I have a current meter, a magnetic circuit breaker and the diagnostic LED. I find watching the ammeters interesting: they never read much more than 0.5 A, if that. So much...
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    Re: "equal to" operator not working in script

    You do get used to the limitations of floating point calculations.

    Mach3 sometimes annoys me with the formatting of the DROs. I tell the CNC to go to X=40.0 and the DRO shows it has gone to...
  3. Re: Spindle cooling requirement, basics of calculation.

    I clamped a few turns of 1/8" bore copper tube tightly around the uncooled spindle and used an inexpensive pump from ebay and a large tub of water from the local HW store. No radiator at all. Works...
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    Re: "equal to" operator not working in script

    This is a pretty common issue with floating point numbers in any software.
    The bane of novice programmers in almost any language.

    Cheers
    Roger
  5. Re: How to generate a Mach3 error when a drive gives a fault output

    Me, I would just AND all those fault lines (via diodes) to the eStop line.
    You could stick diagnostic LEDs on the fault lines if you wish.

    Cheers
    Roger
  6. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    .can it be soft soldered......or silver soldered?
    The Tioxide layer is far more tenacious that for many other metals.You would need an extremely aggressive flux, and probably an oxygen-free...
  7. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    Unless you are coming from China these days. A quarantine barrier has been erected in the last few days. Other countries are doing this too, or will have to, as the 10 day incubation period plays...
  8. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    @Ian - can you play a harp, or would you just produce a hellish discord (sorry about the pun).

    Cheers
    Roger
  9. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    Very nice indeed. Beats the hell out of electronic music!

    Cheers
    Roger
  10. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    @zorbit
    Very nice! A close-up of the bits would be lovely too.
    Very interested in your experiences doing your machining.

    Cheers
    Roger
  11. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    @Ian: it is Ti, not Tn. No such element as Tn.

    I get the impression that this is like cutting stainless....if you go too slow on the feed and without any coolant or lube you will work harden the...
  12. Re: Calling all Titanium grade 5 machinists in Australia and New Zealand

    Some of those 'rules' quoted by Zorbit reflect some ignorance about machining Ti. In particular, you do NOT need flood coolant - I machine Ti a bit and don't have flood coolant. Treat that bit as...
  13. Re: Importing A Chinese Machine......Roger Webb/Pacific Tooling - CNC Router

    It's not Mach3 that is the crap; it is the Chinese controller which does not handle all of the g-code instructions which Mach3 uses. The use of an old pirated copy does not help of course. Yes, we...
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    Re: Designing new Router called Maximus

    You don't actually need flood coolant with Ti. I use pulsed MQL (3 parts kero, 1 part olive oil, ~0.5 sec pulse every ~10 sec) with an air blast (which does cool) for 6Al4V.
    436266
    Works fine with...
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    Re: Designing new Router called Maximus

    Without knowing any details, I think that means you were cutting too fast and maybe not aggressively enough. Ti is funny stuff: treat it gentle and it will get hot, hard and bite you. Rip into it...
  16. Re: Tired of the Aluminum Collet Chuck Wrenches

    just turning some cough syrup into party favors.
    Your name is Fred or George maybe?

    Cheers
    Roger
  17. Re: Tired of the Aluminum Collet Chuck Wrenches

    one off custom work on the paying side
    Hard life sometimes, but it can be fun. Chuckle: many times the customer simply has no other choice.

    I had one customer employee tell me my rates were far...
  18. Re: Stepper / Driver configuration for a HY-6040 rebuild

    The thing to remember about PS ratings is that you are extremely unlikely to ever pull peak power from all axes at once. Even on a snap back to start (G0), the motors should be able to withstand some...
  19. Re: Tired of the Aluminum Collet Chuck Wrenches

    Hi Bob

    Free scrap - I can understand that one!

    I was not thinking of things like glue or tape. Perish the giggling thought!
    I was thinking of a multi-step step process, using a sacrificial...
  20. Re: Ball screw support bearing questions. Are $420 bearings necessary on this machine

    Why not just add shims where needed and be done with the problem?
    My thoughts too.

    Cheers
    Roger
  21. Re: My machine parts aren't to scale in simulation

    You don't say how much too small, which is really not helpful.
    You may have a metric/imperial conversion problem.

    Cheers
    Roger
  22. Re: Tired of the Aluminum Collet Chuck Wrenches

    Blanket statement, and wrong as such.
    If you are talking about unalloyed aluminium, or one of the good bending alloys (eg 5000-series), you would probably be right.

    But cast aluminium is a...
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    Re: G52 offsets not shown in mach3 screen

    +1 to Gerry.
    It is annoying of course, but the actual cutter path is OK.

    Cheers
    Roger
  24. Re: What is the best bit for cutting a pocket into a paving stone and engraving lette

    Paving stone - but what material?
    Many softer stones can be cut with (good) solid carbide. The cutter might not be useful for aluminium and plastic afterwards though.
    For harder stone, up to basalt...
  25. Re: Tired of the Aluminum Collet Chuck Wrenches

    Nice tools.
    I am curious: it seems you milled them out of a solid block and then cut the back off to get something like 6 mm thick spanner. (if thicker, no matter.)
    Why didn't you cut them out of...
  26. Re: UV Printing - UV LED goes out partway through Printing

    I would go for overheating too.

    Cheers
    Roger
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    Re: Designing new Router called Maximus

    It's when your cutter goes that colour that you know you are really in trouble!

    Cheers
    Roger
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    Re: Fixture design tips

    That is always tricky.
    I find using a reference bar on the table, against which I push the job, works moderately well.
    Failing that, you could consider doing each side separately. The milling time...
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    Re: G0704 Tapered Bearing Upgrade

    Fair enough. It may be so.

    Cheers
    Roger
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    Re: G0704 Tapered Bearing Upgrade

    Hi JJ

    I understand the logic all right, but does the mfr make that claim? I am curious.

    Cheers
    Roger
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