Search:

Type: Posts; User: Brobdingnagian

Page 1 of 13 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    4
    Views
    4,658

    Dengue, The BBQ does not get hot enough to do...

    Dengue, The BBQ does not get hot enough to do anything interesting to the metallurgy of the iron. if you want fully annealed cast iron you need to get it hotter much hotter, glowing bright yellow...
  2. Replies
    28
    Views
    19,105

    Sorry Ewan, Nope, I have not pulled out the...

    Sorry Ewan, Nope, I have not pulled out the interferometer since I got them off you. :( Its a happy day when I do need to pull it out though. Do you need em back?

    On the Omer Robbins it has two...
  3. Replies
    77
    Views
    39,194

    I'm still a fan of a positional Sexagesimal...

    I'm still a fan of a positional Sexagesimal system. It has been around a long time ~3000BC, we still use it today time angles etc, has the best of base 10 and base 12. It stacks very well and also...
  4. Replies
    5
    Views
    6,168

    I still have a pattern for the locking collar...

    I still have a pattern for the locking collar knocking about, if you fail to get a good piece at the end of braising it up let me know.

    -Josh
  5. Replies
    26
    Views
    12,244

    Scrap metal merchants are also worth a try, as...

    Scrap metal merchants are also worth a try, as they tend to keep anvils aside. But also failing at having an actual anvil they would probably have a chunk of steel not anvil shaped that would suffice...
  6. Replies
    70
    Views
    33,198

    Both good points. I'm unclear if it is required...

    Both good points. I'm unclear if it is required or not, based on the FEA modeling it would suggest no it does not need an extra plate over the top. That being said there is 4mm clearance between the...
  7. Replies
    70
    Views
    33,198

    Soon... I tweaked the design a little more,...

    Soon...

    I tweaked the design a little more, for simpler build and better use of steel. I also made the calculations for the deflection of the double beam thingy and for the springs free length.
    ...
  8. Replies
    70
    Views
    33,198

    Revision 2.0 Draft: A simpler build.

    Revision 2.0 Draft: A simpler build.
  9. Replies
    70
    Views
    33,198

    Ok Will do, It will just mean an extra layer, a...

    Ok Will do, It will just mean an extra layer, a measurement pad to be mounted on the top of the arm for the indicator, and a few more holes and screws.

    Stay tuned for version 2.

    -J
  10. Replies
    70
    Views
    33,198

    Here are a couple of drafts, still working...

    Here are a couple of drafts, still working through the rest.

    -Josh

    Edit Added some more
  11. Replies
    70
    Views
    33,198

    Sure thing Joe, the schematics are underway. ...

    Sure thing Joe, the schematics are underway.

    If you want to play around with the PDF if you right click you have all sorts of options, the one I always change it is the render mode to shaded...
  12. Replies
    70
    Views
    33,198

    Ok, more simplicity or more protection? And...

    Ok, more simplicity or more protection?

    And do you think we need a fine adjustment mechanism?

    -J
  13. Replies
    70
    Views
    33,198

    Thanks for the feedback Joe they are all very...

    Thanks for the feedback Joe they are all very good points.

    I'll see if my brain is still working at this hour and try to explain what I was thinking.

    The Little block IS a clamp for the...
  14. Replies
    70
    Views
    33,198

    More detailed Repeat Meter -J Please...

    More detailed Repeat Meter

    -J

    Please comment, question etc...
  15. Replies
    70
    Views
    33,198

    The one in the pdf is ~5.5kg

    The one in the pdf is ~5.5kg
  16. Replies
    3,017
    Views
    1,538,264

    Sticky: I was going to mate it with a mass balanced arm...

    I was going to mate it with a mass balanced arm for a camera, but I like the way you think Stuart. ;)

    -Josh
  17. Replies
    31
    Views
    19,682

    Deckelexia....

    Deckelexia....
  18. Replies
    70
    Views
    33,198

    I like the 3D pdf for many reasons, but you can...

    I like the 3D pdf for many reasons, but you can also take measurements, isolated parts, do cross sections off them etc.
    That's interesting. the GGG spec had them with the two feet at the back, hmmm...
  19. Replies
    3,017
    Views
    1,538,264

    Sticky: The pdf are just a way to encapsulate a .u3d...

    The pdf are just a way to encapsulate a .u3d model. If you are having trouble viewing it try Adobe Acrobat 7 or later.

    I u3d for iphone is not supported as it is a light weight implementation of...
  20. Replies
    31
    Views
    19,682

    Franz wants super ridiculous premium on...

    Franz wants super ridiculous premium on everything.
  21. Replies
    3,017
    Views
    1,538,264

    Sticky: Gimbal

    I recently got my hands on some nice 7075 aluminium scrap, and I figured I could build a nice little 3 axis gimbal out of it.
    It is just a side project while I work on other things.

    Anyway see...
  22. Replies
    70
    Views
    33,198

    Here is a quick rough out of the shape and...

    Here is a quick rough out of the shape and important features.

    Based on feedback I'll do a more refined/detailed design.

    based on the 5" centres of the US standard, easily changed to the 100mm...
  23. Replies
    24
    Views
    13,985

    sounds like a rounding error. turn up the...

    sounds like a rounding error. turn up the precision in your spreadsheet for accurate calculations.
    -J
  24. Replies
    940
    Views
    581,822

    Sticky: Nothing major. The cross slide DRO scale on the...

    Nothing major. The cross slide DRO scale on the lathe had came loose.

    I took a clean up pass, measure, set DRO offset, and proceeded to turn with the DRO and power feed and feed stops so I can...
  25. Replies
    940
    Views
    581,822

    Sticky: Learnt to make sure the DRO scale is firmly...

    Learnt to make sure the DRO scale is firmly mounted....
  26. Replies
    24
    Views
    13,985

    just a few more from the nets. ...

    just a few more from the nets.

    291518291519291520291521291522
  27. Replies
    70
    Views
    33,198

    cheers, I presume it is camped in place to give a...

    cheers, I presume it is camped in place to give a knife edge flex point?
  28. Replies
    24
    Views
    13,985

    Basically a chuck-able sine bar 291505

    Basically a chuck-able sine bar

    291505
  29. Replies
    24
    Views
    13,985

    Are you thinking something like the Sinuskator? ...

    Are you thinking something like the Sinuskator?

    -J
  30. Replies
    17
    Views
    12,921

    I think can identify a possible maker of that...

    I think can identify a possible maker of that block as Obishi


    291471

    see here
  31. Replies
    70
    Views
    33,198

    any idea on where the flex point is? is it in the...

    any idea on where the flex point is? is it in the middle or on the bottom?
  32. Replies
    70
    Views
    33,198

    Cool, I'll draw it up to suit mahr. -J

    Cool,

    I'll draw it up to suit mahr.

    -J
  33. Replies
    11
    Views
    6,245

    Oh Yeah, it was a cold process, I can't remember...

    Oh Yeah, it was a cold process, I can't remember the name of the company that made the products, but most of the 10 tubes were for rinses from memory.
    -J
  34. Replies
    5
    Views
    5,836

    He did draw some very long bows. When he said...

    He did draw some very long bows.

    When he said the automatons turned against their masters I was immediately thought of ATM's leading the charge. :)

    -J
  35. Replies
    11
    Views
    6,245

    I'll throw a couple more out there 1....

    I'll throw a couple more out there
    1. Copper/Selenium Blackening
    2. Caustic Black Oxiding (I'm guessing this would be the China method for bolts?)
    3. Black Dyed Oxalate Coating

    -Josh
  36. Replies
    2
    Views
    4,538

    If I understand you right, you just need to...

    If I understand you right, you just need to elongate the slotted holes right? if so the file would make pretty quick work of that.
  37. Replies
    3,017
    Views
    1,538,264

    Sticky: Update: Phil mod + handle. -J

    Update: Phil mod + handle.
    -J
  38. Replies
    3,017
    Views
    1,538,264

    Sticky: Phil, Ooooo, I like that mod... :) -J

    Phil,
    Ooooo, I like that mod...

    :)

    -J
  39. Replies
    17
    Views
    12,921

    I have seen them around but non of them seem to...

    I have seen them around but non of them seem to have a consistent name.. :(



    Semi off topic I have been playing around with an idea after tying to get a really good hold on a part while milling...
  40. Replies
    19
    Views
    11,187

    I quite like our fake Mitutoyo 0.01mm DTI's, even...

    I quite like our fake Mitutoyo 0.01mm DTI's, even the fakes are still pretty good.

    -J
  41. Replies
    70
    Views
    33,198

    : ) It's a good size...Maybe they will average...

    : ) It's a good size...Maybe they will average out,

    If you do make a repeatOmeter, I have some rough idea's on how they are put together.

    -J
  42. Replies
    3,017
    Views
    1,538,264

    Sticky: See attached. as simple as it gets.

    See attached. as simple as it gets.
  43. Replies
    70
    Views
    33,198

    All round that gauging quality episode was good....

    All round that gauging quality episode was good.

    As far as specs go, If anyone here is a student or an apprentice, I pretty sure you have access to all the australian standards the ones of...
  44. Thread: Cern

    by Brobdingnagian
    Replies
    109
    Views
    54,579

    When CERN shut down the LHC for luminosity...

    When CERN shut down the LHC for luminosity upgrades they sent their helium back to their suppliers for safe keeping. fingers crossed that it is still there when they are back online.
  45. Thread: Cern

    by Brobdingnagian
    Replies
    109
    Views
    54,579

    CERN pull power from the French and the Swiss...

    CERN pull power from the French and the Swiss grid. I worked out that they use at least some 36MW just in cooling the the LHC.

    Power supply for them is a huge problem, so much so rather and...
  46. Replies
    17
    Views
    12,921

    Don't hate, I'm sure you all have goodies big and...

    Don't hate, I'm sure you all have goodies big and small.

    I just thought of another toolmakers block, I think it is called a bench block? normally circular with some different sized holes and a V...
  47. Thread: Cern

    by Brobdingnagian
    Replies
    109
    Views
    54,579

    http://www.youtube.com/watch?v=uGstM8QMCjQ

    http://www.youtube.com/watch?v=uGstM8QMCjQ
  48. Replies
    3,017
    Views
    1,538,264

    Sticky: Love it Joe... :) Having one as pivot with a...

    Love it Joe... :)
    Having one as pivot with a loop for a hook is also very useful for steering.

    -J
  49. Replies
    17
    Views
    12,921

    290892

    290892
  50. Replies
    70
    Views
    33,198

    I'll note here that surface plate calibration is...

    I'll note here that surface plate calibration is one of the most demanding/important calibrations.

    Here are the methods I currently can think of
    1. Laser interferometer (get its standard for...
Results 1 to 50 of 624
Page 1 of 13 1 2 3 4