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Type: Posts; User: jz79

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  1. doing it with private funding (mostly?) rather...

    doing it with private funding (mostly?) rather than tax payers unlimited dollar supply is what made this remarkable, there are/were probably a lot of people interested in keeping things as they were,...
  2. Fehlmann ended up going for quite a bit more than...

    Fehlmann ended up going for quite a bit more than any of the other machines... I'm quite surprised, I probably should convert my 2axis cnc one to manual and spruce it up when I'll decide to get rid...
  3. I wouldn't use the external drive to house the VM...

    I wouldn't use the external drive to house the VM (I'm guessing you're going to use it a lot) for one simple reason - plugging/unplugging cables constantly wears things out eventually, and a socket...
  4. Thread: "Lazy" coolant

    by jz79
    Replies
    16
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    905

    is there a coolant flow diagram somewhere in the...

    is there a coolant flow diagram somewhere in the manual? it sounds like a stuck valve, stuck near closed position

    there might be a one way mechanical valve somewhere or a solenoid controlled one,...
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    pictures with that days Taiwanese newspaper in...

    pictures with that days Taiwanese newspaper in the background preferably :D
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    keep regular updates with pictures coming and...

    keep regular updates with pictures coming and this whole thing may still turn positive, just don't blame upcoming problems on something, anything, say there is problem X, we're working to solve it,...
  7. not an in-shop method, unless you have a press...

    not an in-shop method, unless you have a press brake, and if you don't need the near perfect radius at the bottom, would be to use a press brake, if the final shape is "U", you'd start with small...
  8. from what I red, the early treatment plan in...

    from what I red, the early treatment plan in hospitals using hydroxychloroquine was to give it to patients who were starting to get worse (progressing from serious to severe/critical), they were...
  9. Replies
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    88,340

    Wasn't it in the Chinese culture that they very...

    Wasn't it in the Chinese culture that they very rarely will admit to their mistakes, lose face in public so to speak? That would explain more than couplet things...
  10. I'm terribly sorry for the confusion, here are...

    I'm terribly sorry for the confusion, here are more traditional units and corresponding numbers:
    table length - 2 and 31/50 cubits
    the total expansion of said SS sheet over 50F would be 8 and a...
  11. thermite, I'm guessing no one is spraying water...

    thermite, I'm guessing no one is spraying water on that mdf board, air humidity changes would affect such things, significant changes would be noticeable between winter/summer, but not so much from...
  12. I don't think the moisture effect would follow...

    I don't think the moisture effect would follow day/night cycle, its too quick

    The error in the design seems the use of epoxy to glue the SS to the board, if I were to glue it at all, I'd use much...
  13. here is my amateur effort trying to solve this...

    here is my amateur effort trying to solve this same issue few days ago (I had no way of balancing the wheel alone at the time), one pic shows the hub on my grinder with adjustable weights, the other...
  14. the way I understand function of this device is...

    the way I understand function of this device is that it is not balancing anything, but instead it doesn't allow the system (spindle column) to go into its natural oscillating frequency by constantly...
  15. Thread: Titanium or SS?

    by jz79
    Replies
    13
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    821

    9/16-40 multistart thread? and the material...

    9/16-40 multistart thread?

    and the material options being Ti or _cheap_ stainless steel? at least here, Ti on average is 4 or 5 times more expensive than the "expensive" 316 stainless...

    this...
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    3,276

    I was just watching few vids of the S700 changing...

    I was just watching few vids of the S700 changing tools, and there is a pause between the initial Z+ move and the moment the grippers grab the tool and additional Z+ move is done for spindle to...
  17. Replies
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    3,276

    spindle decel rate affecting tool changes? that...

    spindle decel rate affecting tool changes? that sounds quite odd...
  18. if longer etching times can be proven to cause...

    if longer etching times can be proven to cause more problems, then it might be that the deox tank is not removing everything from the surface of the parts, etching eats away aluminum leaving alloying...
  19. coolant most certainly can be the cause (you must...

    coolant most certainly can be the cause (you must check pH of the coolant, compare to manufacturers spec sheet), especially on 2xxx or 7xxx series alloys, check where the spots are, if spot density...
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    so the arbor was made to the 1:12 taper with 23mm...

    so the arbor was made to the 1:12 taper with 23mm at the narrow end, I used a sharpie to mark the balancing arbor and tried to spin it inside the hub with light pressure (the taper wants to slightly...
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    I now read what I wrote and yes, there is a...

    I now read what I wrote and yes, there is a slight "contradiction" :)

    Regarding the pressure and lapping, because there are a lot of tiny sharp edges on the lap, you need to overcome the...
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    I'll append my question to this thread so as not...

    I'll append my question to this thread so as not to make a new one for a simple and short answer

    I need to make a balancing arbor for my Jung F40 surface grinder and can't really find any...
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    Chiron are ones that use custom linear guides, so...

    Chiron are ones that use custom linear guides, so if possible, do a visual inspection, look for any signs of wear there, corrosion, do some test cuts to get idea of condition if possible,...
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    a flat file if it is reasonably sharp, will still...

    a flat file if it is reasonably sharp, will still cut material of a flat work piece, because the contact area of the teeth of the file is small and can be overcome with hand pressure

    the whole...
  25. they have safety cells in those boats now, reason...

    they have safety cells in those boats now, reason being - those crashes previously usually killed the driver, not just the risk of drowning before help arrives, but Gs from impact and tumbling
    ...
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