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  1. Replies
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    912

    so, EPAIII, if I anodize few hundred 7050 parts...

    so, EPAIII, if I anodize few hundred 7050 parts on Monday, they all look perfect before and after the dye, even with etching, then on Tuesday some random joe comes in with 2 parts like that, you tell...
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    912

    this (d)effect is quite common with 7075, as...

    this (d)effect is quite common with 7075, as noted before - especially if etching is involved, avoid etching completely if possible, or at least reduce the time to minimum, a slightly warmer...
  3. it works on boats because the rivets have very...

    it works on boats because the rivets have very little surface area compared to aluminum it is galvanically coupled, the amount of corrosion due to incompatibility of these 2 is spread over a large...
  4. Russian hackers obviously are diverting those...

    Russian hackers obviously are diverting those tests from Japan to their servers...
  5. Thread: Teflon Tapping

    by jz79
    Replies
    14
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    1,083

    I think this had to be in the beginning of your...

    I think this had to be in the beginning of your post :)

    my experience is not production, but sometimes I need to repair or modify scientific tools, never had a problem tapping it, even if the tap...
  6. why would that matter for this 1min 1 off job?...

    why would that matter for this 1min 1 off job? you can machine it at 5ft/min or 10rpm or whatever if the spindle motor has enough torque at such low rpm, it will still be quicker than wondering...
  7. I can't really see the big deal here with +/+ ......

    I can't really see the big deal here with +/+ ...

    you add both + together and divide, add this to the nominal and you have your median, and the divided tolerance number is your +/- if you really...
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    either that or they were setting up for an...

    either that or they were setting up for an exorcism gig at some later date when it turns out that grandmothers couldn't find peace after all and now are pestering the living relatives :D
  9. Replies
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    that is more or less when the machine is rigid,...

    that is more or less when the machine is rigid, in OPs case all bets are off, with a 3" face mill it most likely is flexing in all possible axis, so even if trimmed to 0 and everything is indeed...
  10. Replies
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    1,979

    the only thing that will impress you will be the...

    the only thing that will impress you will be the amount of corners cut when trying to make that machine to a 300-500$ price tag that they could be bought in China, same machine in either US or EU...
  11. Replies
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    3,061

    sometimes the whole idea is to spend on something...

    sometimes the whole idea is to spend on something that only they appreciate, as to show how little regard they have for the money they have and are willing to spend, and potential profitability...
  12. there is definitely something going on with the...

    there is definitely something going on with the material in the marked areas - that is why I insisted on a photo, I was expecting something like this, would be interesting to see it under filtered...
  13. it seems that the pictures are telling a story:...

    it seems that the pictures are telling a story:
    1) the line width on the part seems to correlate with the lighter/darker patches of the part itself, perhaps that is an optical illusion, but I...
  14. do you want to actually solve this or just talk...

    do you want to actually solve this or just talk about it for couple more days wasting peoples time?

    it takes 5min to make a decent pic of the problem, and I'd also suggest posting pic of the drag...
  15. picture is worth a thousand words... under...

    picture is worth a thousand words... under magnification, to see what the "bad" line looks like next to a good one
  16. Thread: Anodizing 7075

    by jz79
    Replies
    11
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    1,142

    take a very good luck at the racking points on...

    take a very good luck at the racking points on the part, area next to them, look for soft/flaking oxide, signs of erosion due to sparking, if it is there - you need to increase the number and quality...
  17. it is normal for the equipment would the fair...

    it is normal for the equipment would the fair thing to say, machines like that are forbidden to be discussed on this forum btw

    if the spring action is smooth with no sticking and the diamond shape...
  18. might be the cross feed screw and handwheel that...

    might be the cross feed screw and handwheel that was taken off before they put it in the truck to avoid bending it during loading/unloading, look carefully at the beginning of the vid, it is still in...
  19. that was a WTF moment for me also, but there is a...

    that was a WTF moment for me also, but there is a way to switch back to the original layout, I can't recall exactly how the option was named, found it by googling, somewhere under preferences checked...
  20. Just tested that indeed Parasolid cannot be...

    Just tested that indeed Parasolid cannot be opened without an online converter, but it will open STEP files no problem, perhaps something to do with licensing, since Parasolid was Siemens owned(?)...
  21. not a great way to start off with a lie, it isn't...

    not a great way to start off with a lie, it isn't could based as you present it, it actually installs the program on your pc and can run offline as well for some period of time till it needs to...
  22. Replies
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    that is wrong, you want 0.10~0.05 for solder to...

    that is wrong, you want 0.10~0.05 for solder to flow, specifying both at 8.00 h7/H7 is basically a press fit, you can end up with 8.00 shaft and 8.00 hole, both in spec - press fit and no room for...
  23. Thread: Deeep 1/2-20

    by jz79
    Replies
    68
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    6,179

    besides the tapping complexity, the U shape is...

    besides the tapping complexity, the U shape is liable to split open - meaning reduced load capacity, which leads me the design was probably dictated more by aesthetics rather than ease of production,...
  24. but organizing a coup in Australia was probably...

    but organizing a coup in Australia was probably much more expensive...
  25. Thread: Deeep 1/2-20

    by jz79
    Replies
    68
    Views
    6,179

    Tried to google those designs and I can't really...

    Tried to google those designs and I can't really see where the 14" continuous thread would be used or necessary there, not saying it couldn't be there, just showing my ignorance
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