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  • Users: KENAT
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  1. KENAT

    HR ethics

    I'm 99.9% decided on this one but throwing it out for comment just in case my ethical standard are off kilter... Say you've accepted an offer of employment from a new employer, and handed in your resignation. Current employer says they want to make a counter offer but insist on seeing the...
  2. KENAT

    Minimimum 'size' of assembly relationship

    I have a colleague who has an assembly model and is trying to adjust the value of an assembly relations (forget if planar align or mate but something like that). For some reason the smallest step it will accept is .010 inch. He's trying to put .001 inch but the part doesn't actually move and...
  3. KENAT

    Welding Aluminum to Steel

    Not sure this is actually the right forum, and this isn't a directly work related question but... Saw this article about how GM has refined welding Steel to Aluminum to address strength issues etc...
  4. KENAT

    Specifying required acoustic environment

    I've got a feeling I and my colleagues are being dumb but please bear with me and help me out. We manufacture precision metrology equipment that is very vibration sensitive - including to acoustic noise especially below around 2 kHz. In our customer facilities requirement we specify the...
  5. KENAT

    Controlling Out of Plane angular variation on a 'wedge'

    One I've been noodling for a while and the answer hasn't come to me - though I admit I need to spend more time actually looking at the standard. However, if someone could point me the right direction I'd appreciate it. Trying to control the top angled surface, control of angle is more...
  6. KENAT

    CMM fixture design help needed - Post in inspection forum

    I'm in out of my depth on this one, if someone more familiar with relevant topics of fixturing required on CMM inspection etc. wants to chime in that would be great. thread286-381095 Please do not reply here. Posting guidelines faq731-376 http://eng-tips.com/market.cfm? (probably not aimed...
  7. KENAT

    ISO Principle of independency in tolerance stackups question

    Anyone who feels like helping this guy out with a question on ISO tolerance stacks especially the implication of Principle of in-dependency please take a look. thread404-369435 I was unsuccessful in getting them to re-post over here. Posting guidelines faq731-376...
  8. KENAT

    Standards and/or sample drawings for Cable Assembly drawings.

    Beyond the basic Y14.100 series drafting standards does anyone have a suggestion for where I might find some standards and/or good sample drawings for cable assemblies? Y14.24 doesn't have much in it, nor do Genium or Global DRM's that I can see (though I think the section for cables may be...
  9. KENAT

    In the market for a 3D printer - recomendations

    Hi all, Over in mechanical engineering other topics there is this thread: thread404-356859 If anyone here has useful input could I suggest you post over there as my attempts to move the discussion to this forum failed. Posting guidelines faq731-376 http://eng-tips.com/market.cfm? (probably...
  10. KENAT

    Jewel Bearing question (SST on Sapphire sliding bearing)

    I posted a question over in thread404-351950 as I wasn't sure how busy this forum is but anyone who might be interested in opining please look at my other thread. Posting guidelines faq731-376 http://eng-tips.com/market.cfm? (probably not aimed specifically at you) What is Engineering anyway...
  11. KENAT

    Variation in wear of SST ball on Sapphire (non standard jewel bearing)

    I have a small motorized microscope stage design I'm working on. In it we have a couple of different types of hardened stainless steel (440C or 440F) balls/ball ends on sapphire bearing. One type in horizontal plane is a simple linear plain bearing where the ball end slides across the...
  12. KENAT

    Vendor to mold/cast small parts from moderately exotic epoxy

    Colleagues of mine have come up with a product idea that will essentially involve over molding epoxy onto a small MEMS device to create a small expendable component. The epoxy they've used for prototypes (with a ptfe mold to allow release) is an off the shelf epoxy adhesive but with high...
  13. KENAT

    Question on Equalizing Datums ASME Y14.5M-1994 section 4.6.6

    Question on equalizing datums for you, with reference to the attached sketch (I've embedded the image too - it's only 95k so hopefully won't kill anyone's download time etc.) and ASME Y14.5M-1994 (I don't have 2009 and we still work to -1994). As shown in the bottom left view, I want the major...
  14. KENAT

    Additive Manufacturing design guidelines (3D Printing/Rapid Protoyping & Manufacturing etc.)

    Figured it might be nice to have one of the early threads be a repository for general design tips/guides so that in future folks with a question can either look at it or get directed to it (maybe even become a FAQ). First I guess let's define what I'm talking about by "Additive Manufacturing"...
  15. KENAT

    Leader to minor or major dia on threaded features?

    Question over in mech other forum about where the leader line should point to when calling out a thread. I looked in ASME Y 14.5 & 14.6 I didn't see it explicitly stated or even clearly shown in examples from a quick look. thread404-342068 Posting guidelines faq731-376...
  16. KENAT

    Bonding FFKM & PCTFE at temperature in solvent atmosphere

    Bonding FFKM & PCTFE at temperature in solvent atmosphere I’m involved in a project where we need to bond plastics like FFKM (Kalrez) & PCTFE (Kel-f) in a device that in service will see saturated solvent atmosphere ( DMSO, Acetone, Acetonitrile, toluene, dichloromethane among the most...
  17. KENAT

    Surface Roughness General Coverage Specification

    Our notes are headed: We have a general surface roughness note the value of which gets set as appropriate for each drawing. (I've just added the italics here for clarity - they aren't on drawings.) We've been using this note since 2005, always believing it to be clear that it was a maximum...
  18. KENAT

    DFM/A and Concurrent Engineering for low volume production

    As this forum isn't that busy I posted a question on this topic over in "Mechanical engineering other topics" however if someone here has something to add please use the link below to go to my other thread. thread404-316744 Thanks! Posting guidelines faq731-376 http://eng-tips.com/market.cfm...
  19. KENAT

    Design for Manufacturability & Assembly at low production volumes

    We had 3 days of DFM/A training last week and frankly I was a bit underwhelmed. 1st off in terms of actual things to do or not do I didn't learn much I didn't already know. There were a few things but nothing outstanding. 2nd it seemed tailored to much higher volumes than we deal with...
  20. KENAT

    Tips for interviewer

    Did a quick search, lots of threads with tips for the job interviewee but not so many for the interviewer so here goes. I've just been asked to interview a potential senior Mechanical Engineer tomorrow morning (9:30 PST to be precise). I've reviewed a good few resumes before and I've done a...

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