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Type: Posts; User: jz79

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  1. Replies
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    you're right, I didn't look carefully enough at...

    you're right, I didn't look carefully enough at it, jumped to conclusion thinking about something I'm familiar with
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    he is looking for the exact opposite of...

    he is looking for the exact opposite of passivation, passive layer is inert, it will not attract or react, activated surface on the other hand attracts other stuff, be it another metal - think...
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    google hall effect sensors, very common type of...

    google hall effect sensors, very common type of sensor used all over the world, from cars (wheel speed sensing, crank/cam shaft position sensing) to home security (door/window open positions), they...
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    this is a really bad idea for multitude of...

    this is a really bad idea for multitude of reasons, here are some:

    composites do not take point loads well, failure (in case of carbon fibers especially) will be sudden and catastrophic

    carbon...
  5. Thread: 45k$ Dining table

    by jz79
    Replies
    48
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    3,354

    price was 45k not the cost, it is not really...

    price was 45k not the cost, it is not really polite to discuss the cost of such showcases of craftsmanship

    I'd be interested to see the techniques used to make the legs, just general curiosity,...
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    motorsport enthusiasts often take the original...

    motorsport enthusiasts often take the original aluminum core (new if available), cut off the formed up flange where the plastic caps are held in and just weld fabricated ends to the old core, any...
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    93,213

    I believe it connects to this: 277743

    I believe it connects to this:
    277743
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    1,545

    if it is mertric, then it won't be 24tpi but 1mm...

    if it is mertric, then it won't be 24tpi but 1mm pitch, M8x1.00 is the fine pitch M8 thread, that is the tap you need to use, 24tpi = 1.06mm pitch, on 1D worth of threads that is already error of...
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    this is too depressing to read, and the worst...

    this is too depressing to read, and the worst part about it - there is quite a big part of population that see these people as "making it", because they employed also a few honest people apart from...
  10. I can't speak for everyone, just from my...

    I can't speak for everyone, just from my experience regarding 6xxx series alloys, the main (or common among them) alloying element is Si in these, and the amount of it makes the difference (if all...
  11. Thread: Pull scraper??

    by jz79
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    1,783

    this is the best vid I've seen that shows Swiss...

    this is the best vid I've seen that shows Swiss type scraping and tools:

    https://www.youtube.com/watch?v=TFCVO0fXW1k
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    In theory the witness sample should work, but it...

    In theory the witness sample should work, but it has to be the same stock of material for one, and racking has to be 'ideal' for both parts for them to behave the same way, what I mean by that is...
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    I tried Dykem hi-spot this morning on the...

    I tried Dykem hi-spot this morning on the differential gears I mentioned, and just couldn't get a good enough print, getting enough resistance between driving and driven side was also difficult with...
  14. 6063 and 6061 anodize basically with identical...

    6063 and 6061 anodize basically with identical results, 6082 (higher Si content) is where you can begin to see differences, higher Si makes the surface (even if polished to mirror) lose its luster,...
  15. any paint will produce rounded edge on corners,...

    any paint will produce rounded edge on corners, that will create the "parting line" effect

    anodizing will work for this, bright red is certainly possible, the only problem here might be with the...
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    when I said to do trial runs I didn't mean the...

    when I said to do trial runs I didn't mean the actual finished parts, make dummy parts with similar surface area and couple special features you're going to inspect and use the same hanging method to...
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    hard anodizing is done at around -2 degrees C,...

    hard anodizing is done at around -2 degrees C, you will have to take into account the thermal shrinkage if you want to do it that way, in case the parts need to be dyed, you might run into problems...
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    you can't really tell from this "print" anything,...

    you can't really tell from this "print" anything, what one should be seeing is what people look for when finish scraping - high spots (gear tooth contact patches) will be light - no spotting...
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    my eye isn't really trained in adjusting gear...

    my eye isn't really trained in adjusting gear meshing, but somehow I don't think that is the right amount of spotting compound you used there, the idea is to get a very thin and even coat (like what...
  20. Thread: filing titanium

    by jz79
    Replies
    8
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    787

    steel density is around 8, Ti - 4.7, aluminum...

    steel density is around 8, Ti - 4.7, aluminum ~2.8, if you have the same component from a known material, you could just weigh them on jewelers scale to get an idea if they are Ti or not, apart from...
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    as an exercise, I gave this modification a try,...

    as an exercise, I gave this modification a try, used Dialog 4 post available from Autodesk as a base,

    what it does:
    calculates G0 and G1,2,3 moves for X, Y and Z axis and keeps adding them up in...
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    Fusion does calculate total feed distance for an...

    Fusion does calculate total feed distance for an op, you can see it one of the info windows for an operation, but I did very quick search in the...
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    my experience is nearly 10 years old with this,...

    my experience is nearly 10 years old with this, so there are probably more software solutions out there now to make the work flow easier, but back then the scanner itself (supposedly it was some...
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    this looks more contrast adjustment related, that...

    this looks more contrast adjustment related, that signal is usually set by a voltage divider, a trim pot or couple resistors, usually near the power supply/lcd cable connector area, could try to...
  25. for the ones that don't believe it works on...

    for the ones that don't believe it works on steel, fast forward to around mid part of the video, the part looks it might be aluminum, but then the glowing sparks later in the vid must have come from...
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