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Type: Posts; User: jz79

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    I was trying to be sarcastic about that :) and...

    I was trying to be sarcastic about that :)

    and no need to record 24/7 and store everything for decades, single shift would be enough, if nothing out of the ordinary happened - delete, start next...
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    Here's a thought - grind a slight convex radius...

    Here's a thought - grind a slight convex radius at the end of the 1/16 punch, so if they try to use it instead of the starter punch it will tend to slide off, making it usable when really needed - to...
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    doing this properly makes that thing basically...

    doing this properly makes that thing basically into a teach in cnc lathe, which sort of defeats the whole manual machine thing, and, if everything is done properly all will be good (no steppers...
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    great tool if you, as the equipment manufacturer,...

    great tool if you, as the equipment manufacturer, want to avoid abuse of the equipment (and avoid warranty claims) and probably great for insurance provider also :D
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    this thing wouldn't exist without Youtube, draw...

    this thing wouldn't exist without Youtube, draw your own conclusions...
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    smaller hammer? so they can get a better feel for...

    smaller hammer? so they can get a better feel for how much energy they are trying to use

    and what is the application? can't an assembly press be used with a fixture instead of punch and hammer?
  7. I have a switch mode lab power supply 0-24V and...

    I have a switch mode lab power supply 0-24V and 0-80A, fed from single phase 240V (EU), and that thing will blow auto fuse (10A) once in a while when turned on, few big caps in there to provide the...
  8. normally there would be much less filtering when...

    normally there would be much less filtering when rectifying 3ph, probably the reason why they designed the PS for that thing that way, so I doubt it would be happy about the 1ph supply, not for long...
  9. my old Deckel S1 tool grinder has 2 speed 3 phase...

    my old Deckel S1 tool grinder has 2 speed 3 phase motor, it isn't normal and high speed, it is low and normal, so if you connected to the low speed (more poles per revolution) and ran it at twice the...
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    if it comes to decision of parting it out -...

    if it comes to decision of parting it out - don't, better offer the whole thing for 2x or 3x you payed for it to someone like Peters mentioned Ruemema, it will be much better use of your and everyone...
  11. nearly 1% Si in those two, which makes me think...

    nearly 1% Si in those two, which makes me think it is not 3000 at all
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    indeed, and also forget about lottery tickets for...

    indeed, and also forget about lottery tickets for the next decade or so :)
  13. the first one with a lot of Zn is most likely...

    the first one with a lot of Zn is most likely 7075, the other 2 are 6061 or 6082
  14. "better" is a matter of perspective, I'd say it...

    "better" is a matter of perspective, I'd say it simply is different

    that search bar (not just in google) is a complicated tool despite appearances, it is like a Swiss army knife, you only use the...
  15. it isn't really a restriction if you make a...

    it isn't really a restriction if you make a "complicated" query which google doesn't understand

    when I googled this (only the text inside quotes) - "Henry Ford (1918) quote It is well enough that...
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    you're displaying quite a lack of common sense...

    you're displaying quite a lack of common sense and obvious lack of basic science knowledge to not understand the 2 methods I wrote about if you think that measuring density is better, this in turn...
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    mr. Engineer, no one is guessing these alloys...

    mr. Engineer, no one is guessing these alloys based on density, that is about the worst option of them all
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    you can do a very crude hardness test - take a...

    you can do a very crude hardness test - take a similar weight piece (to your gummy 7075) of 6061 T6 you trust and pick a 90 degree corner on it that you don't care about, take your gummy 7075 and...
  19. read this regarding electrolyte - Dissolved...

    read this regarding electrolyte - Dissolved Aluminum in Anodizing -- How Much, Analyze/Titrate, Correct/Adjust , watching voltage (if you're using constant current method) also tells a story, but...
  20. the chilled vacuum chamber they tested it in,...

    the chilled vacuum chamber they tested it in, that would have cost a pretty penny also

    I'm wondering if the option to assemble it in space was ever considered, wasn't the heat shield a big...
  21. it can be done with type2, but I'm not sure what...

    it can be done with type2, but I'm not sure what effect it will have on type3, I'd expect the roughness of the surface to increase (due to acid eating away the oxide), and probably abrasion...
  22. type2 typical current is about 12amps/sqft, from...

    type2 typical current is about 12amps/sqft, from memory type3 was about 2 times higher current density, so 24-25sqft *6 would be 150A or so for a part of that size, the voltage there at the end may...
  23. here are some notes from me, this isn't "how to",...

    here are some notes from me, this isn't "how to", but just a collection of thoughts I have on the process that I experimented with in small scale (10l tank)

    that type2 shop could use some of their...
  24. the important bit is not to surround yourself...

    the important bit is not to surround yourself with them, that makes you the central one
  25. anodizing is ok, but as I said, don't overdo it,...

    anodizing is ok, but as I said, don't overdo it, don't go for max thickness be it hardcoat or regular typeII, 15micron is minimum for black color, that is about the maximum what I would use, and note...
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