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  1. it must be Ti (grade 1 or 2 most likely, alloyed...

    it must be Ti (grade 1 or 2 most likely, alloyed Ti don't work well for anodizing), there simply are no other options really, apart from aluminum, which you say it isn't

    I can't say for...
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    I'm in the same amateur category, so it is just...

    I'm in the same amateur category, so it is just speculation on my part

    interesting that in the picture I linked earlier, 3rd gen DMU 50 (which seems to be the one in the video), the Y/Z casting is...
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    this is supposedly what it looks like: 267532 ...

    this is supposedly what it looks like:
    267532

    I'm not very experienced with this, but I wouldn't call that a shit design...

    the thing is, when that tool holder started to wobble in the...
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    remember that doors are usually just under 2m in...

    remember that doors are usually just under 2m in height(78"), structural opening around 2,1m (82"), and Brothers are around 2,5m tall (nearly 100"), so even if it would fit in width, something will...
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    I think you might want to read up on dangers...

    I think you might want to read up on dangers associated with machining magnesium (especially on cnc), 2nd floor office type building would probably rank about the worst place to do that sort of...
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    that might have been the case when designers had...

    that might have been the case when designers had the actual machining experience, and still some things would go back to be redesigned after prototypes are made, not the case these days, someone...
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    if you need "adjustability" with a M5 screw for...

    if you need "adjustability" with a M5 screw for length of even 40mm (50 minus some save thread engagement length), that is a noodle of aprox 4.5mm sticking 40mm out of something to adjust the other...
  8. p.s. even if you do run into issues with the...

    p.s. even if you do run into issues with the range of motion of standard ball joint in the bracket, there are "extended" versions of those balls, a bit less load capacity at same size, but you can go...
  9. you begin to make less and less sense... you...

    you begin to make less and less sense... you don't get more motion out of the joint if you keep your setup the way it is, the only difference is where the ball is bolted, to the steel plate or the...
  10. if that is the case, then you should consider...

    if that is the case, then you should consider "flipping" the ball joint, so that threaded end goes into the other part and the bracket for the ball is attached to the sheet metal, position/rotate it...
  11. just a thought about the whole joint design - it...

    just a thought about the whole joint design - it is difficult to tell from the description how the forces are applied to this joint (see the attached image), if they are in the green arrow direction,...
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    I read/speak Russian, since it was taught in...

    I read/speak Russian, since it was taught in schools as obligatory (second) language back in USSR times to kids from the age of 11-12

    He said he changed to the smaller size tool to be able to roll...
  13. I use 2% lanthanated (blue) for AC, 2% ceriated...

    I use 2% lanthanated (blue) for AC, 2% ceriated (gray) for DC, as suggested by Jody from weldingtipsandtricks, my experience mirrored what he explained in one of his videos as well

    reasons:
    DC -...
  14. don't know who suggested starting with Al, in my...

    don't know who suggested starting with Al, in my opinion it is harder for a beginner to get the hang of, puddle looks quite different than mild or stainless, have to deal with oxidation, AC balance...
  15. surfaces look good, not much wear at all, but why...

    surfaces look good, not much wear at all, but why the question? is there a particular problem that prompted the disassembly and the question?

    one thing to check while everything is disassembled -...
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    oh I wasn't trying to offend "purists" :) if...

    oh I wasn't trying to offend "purists" :)

    if the aim is to get the "original", then that is what he should look for, I just wanted to point out that the new holders, that can be found on usual...
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    a little while ago I bought a new A size Multifix...

    a little while ago I bought a new A size Multifix from Schnellwechselhalter nach Multifix System, post + 6 holders was below 500 EUR, tool post alone was around 150EUR, you can check the website for...
  18. getting a bit off topic, kind of, but... as...

    Yeah, I heard that any imperfection that's not very visible on clean aluminum will become very visible afted anodizing.
    [/quote]

    getting a bit off topic, kind of, but...

    as anodizer I can tell...
  19. that reminds me I need to update that thread, but...

    that reminds me I need to update that thread, but no time for that now

    but in essence - that is a desktop machine, I had to remove mine from the table it was on to move it into the shop (it was...
  20. "un" was meant to be "and", I meant to suggest to...

    "un" was meant to be "and", I meant to suggest to read both of those topics, they pretty much cover everything about this table top cnc subject, short answer is - it makes no financial sense to...
  21. if the tool marks are not too terrible, one...

    if the tool marks are not too terrible, one option might be to look for anodizing shop that can do matte etching, it is an additive used in the normal caustic etch bath that produces a matte finish...
  22. all the answers to OP "questions" are in the...

    all the answers to OP "questions" are in the swissmak un "600 pound challenger" (I think the topic was named something like that) discussions , the is no reason to continue this one unless you want...
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    few ideas: cut off the thread end, drill and tap...

    few ideas:
    cut off the thread end, drill and tap for an insert, thread it in with some permanent loctite, machine to diameter, cut the required thread, there is little axial load on the shaft, so as...
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    for what it's worth, after careful...

    for what it's worth, after careful scraping/sanding the spot where the numbers are etched, from the 2 rails managed to piece together:
    LY 45 1020 FL 2G 07 P6 Z4
    below is the corresponding page from...
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    help identifying NSK linear guide

    As the title says, the guide is for a Chiron FZ 12 W, made in 1996, it's a traveling column machine, and there is some corrosion damage on Y axis rails, top ball row only, at around last 100mm in Y-...
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