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  • Evan's Avatar
    02-03-2015, 10:26 AM
    Evan replied to a thread OT: personal note in General
    The various sensors in the body can be incredibly sensitive. The difference between on and off can be tiny fractions of a percent of the operating...
    51 replies | 4362 view(s)
  • Evan's Avatar
    02-03-2015, 04:50 AM
    Evan replied to a thread OT: personal note in General
    It is funny you mention such thought processes. The operation of the various control sensors is now commonly referred to using standard engineering...
    51 replies | 4362 view(s)
  • Evan's Avatar
    02-03-2015, 01:01 AM
    Evan replied to a thread 4140 Annealed in General
    Abrasion resistance is a work hardening property. Abrasion resistant steels contain varying amounts of manganese to as high as 20% or so. They are...
    10 replies | 619 view(s)
  • Evan's Avatar
    02-03-2015, 12:23 AM
    Evan replied to a thread OT: personal note in General
    "Evan, what happens if this is confirmed? Does it change the treatment, or suggest a treatment that isn't being applied currently?" Excellent...
    51 replies | 4362 view(s)
  • Evan's Avatar
    02-01-2015, 10:41 PM
    Evan replied to a thread OT: personal note in General
    The specific genetic test I need done is to test for the presence of a mutation in the Chromosome 4 PHOX2B gene, exon-3. The reason that it cannot be...
    51 replies | 4362 view(s)
  • Evan's Avatar
    02-01-2015, 10:11 PM
    Evan replied to a thread help bending t6 aluminum in General
    "Our discussion is very generic about mechanical stuff and is true across the board." Not the least bit so. The discussion is very focused on a...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 10:08 PM
    Evan replied to a thread help bending t6 aluminum in General
    You should have seen the aluminum castings I had to finish making for a Handley Page aircraft. It was a ridiculously complex casting with many bores...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 09:55 PM
    Evan replied to a thread help bending t6 aluminum in General
    My point about predrilled holes is that the accuracy of CNC will play no part. Regardless of how the aircraft skin is made it must be drilled to fit...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 09:29 PM
    Evan replied to a thread help bending t6 aluminum in General
    I don't think it would be physically possible to make machined parts for the skin of a large aircraft, in particular anything that is predrilled....
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 09:03 PM
    Evan replied to a thread help bending t6 aluminum in General
    The standard sheet metal aluminium used in aircraft is grade 2024 T3 Alclad. It is called alclad because it has a very thin layer of pure aluminium...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 08:29 PM
    Evan replied to a thread Anger management. in General
    It is not good to stop taking opiates suddenly. Because it dampens the production of nor-epinephrine when it is removed suddenly you will likely have...
    95 replies | 6112 view(s)
  • Evan's Avatar
    02-01-2015, 07:55 PM
    Evan replied to a thread help bending t6 aluminum in General
    Material temp makes a big difference when bending aluminium. You can make bends easier and with less chance of cracking by taking it to boiling water...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 03:36 AM
    Evan replied to a thread help bending t6 aluminum in General
    "Unless the material is very anisotropic ..." High strength heat treated aluminium sheet metal is quite anisotropic. The rolling and stretching...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 03:26 AM
    Evan replied to a thread help bending t6 aluminum in General
    The wings on many fighter jets are machined from a single block. I have watched it being done. It has something to do with budget... added:...
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 12:41 AM
    Evan replied to a thread OT: personal note in General
    That remains to be seen. What I really need is some genetic testing and at least one of those tests may not be able to be done in Canada. Even the US...
    51 replies | 4362 view(s)
  • Evan's Avatar
    02-01-2015, 12:29 AM
    Evan replied to a thread help bending t6 aluminum in General
    @CalM I agree with your suggestions. (all of them)
    169 replies | 5717 view(s)
  • Evan's Avatar
    02-01-2015, 12:09 AM
    Evan replied to a thread help bending t6 aluminum in General
    "Have I missed in any aspect there of?" Just one. The alloy. 7075 is used in aircraft and sometimes in critical parts such as landing gear. It...
    169 replies | 5717 view(s)
  • Evan's Avatar
    01-31-2015, 11:41 PM
    Evan replied to a thread help bending t6 aluminum in General
    Aircraft are designed as light as possible with a 50% safety margin. That why they can fly. It isn't a bridge. Crossed posts. Aimed at Boomer ...
    169 replies | 5717 view(s)
  • Evan's Avatar
    01-31-2015, 11:19 PM
    Evan replied to a thread help bending t6 aluminum in General
    You cannot offer correct advice without knowing the alloy. It is not acceptable to bend T6 7075 aluminium even if it looks ok afterward. 7075 will...
    169 replies | 5717 view(s)
  • Evan's Avatar
    01-31-2015, 10:55 PM
    Evan replied to a thread help bending t6 aluminum in General
    Aircraft aluminium is my original training and work experience with metal. What has been written so far in this thread is of no help since the...
    169 replies | 5717 view(s)
  • Evan's Avatar
    01-31-2015, 10:21 PM
    Evan replied to a thread Anger management. in General
    Morphine is a natural body chemical and is present in all sorts of things such as milk. The body uses opiates as a regulator of neurotransmitters,...
    95 replies | 6112 view(s)
  • Evan's Avatar
    01-31-2015, 09:55 PM
    Evan replied to a thread OT: personal note in General
    I very much appreciate all the good wishes. However, this isn't some serious emergency issue, just some testing to do. Still, it is nice to have...
    51 replies | 4362 view(s)
  • Evan's Avatar
    01-31-2015, 08:56 PM
    Keep in mind that bolts are not generally made with a specified alloy (unless specifically so stated). Bolts are made to a strength specification...
    26 replies | 1788 view(s)
  • Evan's Avatar
    01-31-2015, 07:49 PM
    Evan replied to a thread Anger management. in General
    I haven't been following this thread but have read some of it. Basically, when something wrong happens while using a tool in my shop I have just one...
    95 replies | 6112 view(s)
  • Evan's Avatar
    01-31-2015, 06:44 PM
    Evan replied to a thread OT: personal note in General
    Just an update; I am still not in the hospital. I come after any emergency patients and our hospital has very limited facilities being in a remote...
    51 replies | 4362 view(s)
  • Evan's Avatar
    01-29-2015, 12:26 PM
    Evan replied to a thread grinding hss in General
    I would normally say "no problem" but I must sign off now because I am about to get ready to head to the hospital. Bring it back up if you wish in a...
    61 replies | 3774 view(s)
  • Evan's Avatar
    01-29-2015, 12:14 PM
    Evan replied to a thread grinding hss in General
    Identifying aluminium oxide wheel types by colour only applies within a brand. White, blue, pink etc. means nothing when comparing brands. The colour...
    61 replies | 3774 view(s)
  • Evan's Avatar
    01-29-2015, 07:27 AM
    Evan replied to a thread Instructional Revolution in General
    A very good example of what changes have been brought about by the incredible availability of knowledge is the medical field. It used to be the sole...
    20 replies | 1267 view(s)
  • Evan's Avatar
    01-28-2015, 06:30 PM
    Animation is well covered by the Sketchy Physics plugin. There is a new version available that fixes many of the bugs in version 3.2 and also adds...
    57 replies | 3024 view(s)
  • Evan's Avatar
    01-28-2015, 05:22 PM
    " Or, are there features of SketchUp that simply don't work in perspective mode" Correct. Try zooming very close to a vertex in both modes. You...
    57 replies | 3024 view(s)
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About Evan

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About Evan
Location:
52N 122W Western Kanuckistan
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Everything but proctology
Occupation:
Self unemployed

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