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Type: Posts; User: RCaffin

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  1. Replies
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    Re: Designing new Router called Maximus

    Hi Pete

    Yes, I know about using heat. Been there when changing bindings.

    The 24 hr Araldite I use is a 50:50 mix. I dare say they made it that way for simplicity for the average user.
    What...
  2. Replies
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    Re: Designing new Router called Maximus

    I wax the bolts and set the bolts with epoxy or loctite after the first pull down.
    Ah - that is different from just tapping a hole in a composite. Very different in fact. I can imagine that working...
  3. Replies
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    16,676

    Re: Designing new Router called Maximus

    Prediction:
    You will eventually have to switch to steel inserts for the bolts. Yes, I know you mentioned that you can get good pull-out strength with composites, but that is for a static situation...
  4. Re: X and Y axis problem. DOES NOT MATCH THE ACTUAL LASER HEAD

    Well, for a start, your machine should be in eStop when you turn it on. You should put it in eStop before you turn it off.

    Cheers
    Roger
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    Re: CNC Router - New PC Parallel Port Pickle!

    I am running a 'several-years-old' dual processor Dell with W7 at present. Is it 32 bit or 64 bit? I am not sure. It drives an ESS. I monitor the CPU load and memory load via Task Manager all the...
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    Re: CNC Router - New PC Parallel Port Pickle!

    A lot of cheap Chinese adapters will drive four axes 'OK', but they can't handle more complex g-code like threading and touch-probes. It's a 'you get what you pay for' situation. And you rarely get...
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    Re: CNC Router - New PC Parallel Port Pickle!

    See my post #12 re MOSTEK chip.

    Cheers
    Roger
  8. Re: We do you guys buy your stock? Steel, mainly aluminium in Australia?

    A lot of Australian suppliers are still living in the land of denial. They only want to sell by the truck load, and they want a 100% mark-up. And their delivery charges are out of sight. As bad as...
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    Re: F360 - spiral toolpath on 4th axis?

    @farmer: Ah, I don't know LinuxCNC, so can't help.
    @dharmic: I wrote that document initially to get it sorted out in MY head!

    Cheers
    Roger
  10. Replies
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    Re: F360 - spiral toolpath on 4th axis?

    There is a guide to Coordinate Spaces at the Artsoft web site which discusses this for Mach3:
    Coordinate Spaces - a Guide

    You can reset the A axis value in Mach3 in several ways, not all of which...
  11. Thread: Spindle speed

    by RCaffin
    Replies
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    Re: Spindle speed

    What Craig wrote.
    +1 on the learning curve too. But that is part of the fun!

    Cheers
    Roger
  12. Thread: Spindle speed

    by RCaffin
    Replies
    18
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    79

    Re: Spindle speed

    You can buy 1kW high-speed motors which are even smaller, but they are for model aircraft and they rely on a huge airspeed for cooling. Without that airflow, they glow real fast! What can this one...
  13. Thread: Spindle speed

    by RCaffin
    Replies
    18
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    79

    Re: Spindle speed

    900 W in a body that small? Hum ... I have my doubts, at least for continuous operation. It might glow rather quickly.

    What is not clear is whether the price is just for the motor, or whether it...
  14. Replies
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    Re: Which bits to use for PCB milling?

    Di-Boride? I will research that one.
    Thank you.

    I have been milling 5082 sheet Al successfully, using a kero/olive oil mist. While watching closely.

    Cheers
    Roger
  15. Replies
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    Re: Which bits to use for PCB milling?

    Ah - CarbidePlus. Already on my preferred supplier list. But thank you.

    Have you tried CarbideChiu on ebay? Very happy with his services as well. He has done custom endmills for me in the past.
    ...
  16. Replies
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    Re: Which bits to use for PCB milling?

    The broad included angle has meant that the tip of the tool is very much more robust than the 30 degree tool I had used
    Ditto. Although I am happy with the 45 or 30 degree ones.

    What happens in...
  17. Replies
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    Re: Which bits to use for PCB milling?

    A very good brand, Kyocera. I buy some cutters and single-point thread mills from them.
    The particular bits you referenced look very solid.

    Cheers
  18. Replies
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    Re: Which bits to use for PCB milling?

    reason for opting 0.1mm V bits it compensates for spindle runouts
    Chuckle! Yeah, that works.
    I do use SMDs - but I need a head-mounted magnifier for them these days. That PCB I showed was SMD.
    ...
  19. Replies
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    Re: What spindle motor for a diy PCB CNC machine?

    Runout
    Runout
    Runout

    When the runout is as big as the size of the cutter, the cutter breaks - quickly.

    Cheers
    Roger
  20. Replies
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    5,816

    Re: Which bits to use for PCB milling?

    Hi Hanspeter

    Yes, some of these tiny end mills are expensive. I would reply that you get what you pay for.

    Yes, you can use those inexpensive carbide V-bits too. I have found that some of them...
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    Re: Non-circular boring. (Linuxcnc fun)

    You can see the higher resolution. Very nice.

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

    Very different things.
    Al oxide forms crystals, very hard crystals, which can be glued or sintered together to make AlOx grinding wheels. TiN does not make crystals like that. Instead TiN forms...
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    Re: CNC Router - New PC Parallel Port Pickle!

    Hum, yeah, I could have misunderstood the boundary a bit. I know that W64 won't run Mach3 through the LPT (I tried), but I have not checked the 32 bit version. So, consider me corrected, and thanks....
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    Re: CNC Router - New PC Parallel Port Pickle!

    Hi Gerry

    To the best of my knowledge, Art Fenerty's LPT driver, which is a core part of the original Mach2/3, can not be loaded by versions of Windows later than XP. It does things to the OS which...
  25. Thread: Spindle speed

    by RCaffin
    Replies
    18
    Views
    79

    Re: Spindle speed

    Wood is soft: you can cut it at high speed.
    But if you run the spindle fast, you MUST also move fast, otherwise the cutter spends most of its time rubbing rather than cutting. Rubbing makes heat and...
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    Re: CNC Router - New PC Parallel Port Pickle!

    Trying to run Mach3 through a parallel port, with or without an add-on card, is unreliable to say the least. This is KNOWN.
    The problem is that Mach3 needs a special driver to make the XP O/S work...
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    Re: Uneven surface finish on steel

    MACHINE????
  28. Re: Cannot create work cordinates (G54, G55....) E06 NO SPEC ERROR Meldas 64

    Never heard of the brand, but IF Chinese, it is well-known that they do not all support all g-codes.

    Cheers
    Roger
  29. Replies
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    Re: WMD25V mill from ETS

    WMD25?
    Made in Iraq?

    Cheers
    Roger
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    Re: Question re: 4th axis rotary

    Exactly the same thing.
    I made my own because I have cupboards full of electronic chips etc from the past; I am too mean to buy what I can make; and it was fun.

    Cheers
    Roger
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