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  1. OTHGWayne

    C12L15 vs C1215

    With so little carbon difference, the strength differences will be determined by the processing, not the chemistry. The machineabiltiy will be the biggest difference.
  2. OTHGWayne

    Autocad 3D

    Inventor actually is a mechanical design tool, as it Solid Edge and Solid Works. I must first say I am no expert in the architectural side of 3D modeling, so there are many out there more qualified than I to answer this for you. There are companies that produce products for the architecture...
  3. OTHGWayne

    different line weights for same layer

    Yes you can. Every object in a given drawing has a line weight property. You can edit individual lines using the properties icon or the properties toolbar. This has been a true fact through at least back to version 2000, perhaps back to version 14.
  4. OTHGWayne

    Autocad 3D

    Over the past few revisons, Autodesk has greatlky improved the 3D capability of AutoCAD. Some companies use AutoCAD for just that purpose. That said, if you are into 3D you really need to consider moving to a solid modeling type software which is designed for this type of use. Packages to...
  5. OTHGWayne

    Actuated Valve Dimension: Face to Face

    As an American valve manufacturer who has been producing throttling control valves for over half a century, I can safely say that, unless specified differently by the customer, our face to face is governed by ASME B16.10
  6. OTHGWayne

    disc and seat material for globe valve

    Various issues being thrown about here, some needlessly so. There are generally four primary reasons to use a stellited trim. 1) Fluid stream solids 2) Gallable materials 3) Process fluid 4) Excessive pressure drops across the trim Fluid stream solids are an easy one, particulate matter in...
  7. OTHGWayne

    Castings versus Forgings

    Concentrate a search on grain structure. Also check the ASTM specs for mechanical properties on the same materials casted by different methods and different heat-treats. The properties, in this case, have much to do with the quality of the material and not solely the chemistry. For example...
  8. OTHGWayne

    external BOM / parts list database suggestions...

    If you don't possess an ERP system and don't entend to buy one, then stick with using Excel. It is easy, robust, translates to dozens of engineering software packages and stays usable even as Excel matures. It is easy to program and easy to find support and help online. By far the shortest...
  9. OTHGWayne

    Axial thrust ball bearing running face

    Depending on loads, you might consider stellite 6B. Yes it is hard to machine, but it is machinable.
  10. OTHGWayne

    Countersunk Socket heads binding on initial removal

    Loctite or no loctite is an arguement that has raged for years, you will need to make up your own mind on that. One thing that I will caution you on as I have seen it many times in my past. As you know there are many loctite materials of varying degrees of strength, i.e. 242 vs. 609. They...
  11. OTHGWayne

    Sealing NPT threads, tape v. anaerobics ?

    Tape is good for temporary joints that are intended to be disassembled often or soon. For permanent istallations, anaerobics are the way to go. Ones that assist in the area of galling (as some materials do) are even better.
  12. OTHGWayne

    Hopefully there is intelligent life here.

    Answer? Answer what? All I see is a seemingly never ending FLOW of trick questions, catch phrases and exercises in semantics. Quite franky I'm way too busy for this crap. And for the record, I've been in hydraulics, pneumatics and flow control since 1983. And while I may not agree with...
  13. OTHGWayne

    Hydraulic & pnuematic blocks

    Hey Stickman, there really aren't that many symbols that you would use a lot. Simply make your own, it would probably be quicker and more accurate.
  14. OTHGWayne

    Hopefully there is intelligent life here.

    After giving this a little thought I must admit that your statement "pressure is resistance to flow" is actually true from a certain perspective. In a situation were a downstream valve can be used to constrain the flow path causing a pressure build up that restricts flow. That said, "without...
  15. OTHGWayne

    Does Length of thread have an Impact on the Torque Applied

    A properly torqued fastener is normally one where the tension load applied to the fastener stesses it to somewhere around 80% of the yield strength. That percentage can fluctuate some but 80% is reasonable. That stress is normally based on the tensile area of the thread to get the appropriate...
  16. OTHGWayne

    ANSI Nut Standards

    Thanks for the reply Seagull, but exactly where is the acorn nut information that I identified as being my main focus?
  17. OTHGWayne

    ANSI Nut Standards

    Sorry, the ANSI standard I've looked through is B18.2.2 not B1.2.2 as in the original post.
  18. OTHGWayne

    ANSI Nut Standards

    To anyone's knowledge, is there an ANSI standard or any other American standard that governs the family of hex nuts known as acorn, cap or dome nuts? My primary area of interest is in tapped-thru acorn nuts. Any idea what ANSI (or other) standard would cover these? I have searched the...
  19. OTHGWayne

    Unified Thread Standard Question

    No. A 4" UN thread is designed for a thread that is 4" OD. A 4" NPT is much larger than 4", closer to 4.25"-4.44" OD.
  20. OTHGWayne

    Source for 7005 aluminum, please.

    He who puts all eggs in Chinese basket soon has much material for omelet. Consider your alloy choice carefully.

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