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  1. swertel

    Does Dia Tolerance Control Straightness

    I have a tube with an inner diameter dimension consisting of a +/-.005 tolerance. Does that tolerance also control the straightness of the tube? From my interpretation, if the ID was a datum, then the theoretical datum surface would be a cylinder that fits within the tube. That implies...
  2. swertel

    Difference between Stress Relieve, Anneal, and Normalize?

    I'm looking for good references that can define the difference between the available heat treatments listed in the subject line. I found a couple ASTM and SAE references, and while they are great telling me about the physical properties of the differences (yield, tensile, and hardness) for...
  3. swertel

    Inventory Control of Container Size?

    Case Study: We use an adhesive. The adhesive comes in 4oz bottles, 12oz bottles, spray cans, or even 55 gallon drums. Engineering creates a vendor item drawing that defines the acceptance criteria of the adhesive and offers recommendations for commercial items that fit the specification...
  4. swertel

    Temporary Labels per AS478?

    Decals (method -11) and Pressure Sensitive Labels (method -14) are listed under the permanent marking methods. We like to use temporary labels on parts. Do the two methods above also apply to temporary (removable) labels or is there a better method to depict on a drawing? Could -36A be...
  5. swertel

    Alibre Forum Currently Disabled

    For several days I noticed that forum.alibre.com was disabled. I finally contacted support today to ask what was going on. Apparently, they were updating the platform (or backend server, or something I'm not too familiar with) and the upgrade wasn't supposed to take very long, thus they didn't...
  6. swertel

    Alibre is coming back, without 3D Systems

    The article is here. http://www.develop3d.com/blog/alibre-3d-cad-return-following-its-divestiture-from-3d-systems-design Their new website. www.alibre.com --Scott www.aerornd.com
  7. swertel

    Interpretation of Surface Finish Symbol - Is Smoother Acceptable?

    I've read ASME Y14.36 and scanned ASME B46.1, but can't find any specific reference to the question I have. When the surface finish callout is placed onto the drawing, does it imply the roughest finish possible? All of the mathematics that go into calculating the average (Ra) value aside, I'm...
  8. swertel

    Records Retention: Requirements and Best Practices?

    I'm looking to benchmark records retention policies and best practices from comparable industries in order to determine how to better implement my company's retention policy and tools. Areas I'm looking for in order to compare notes as well as be directed to areas I can further research on my...
  9. swertel

    Identifying DoD Level 1, 2, or 3 on Drawing Face

    We used to identify the design maturity level based on part number. Now, we are eliminating that business process and will be maintaining the same part number throughout the entire development cycle. Therefore, we would like a method to identify the Design Maturity on the face of the drawing...
  10. swertel

    Standards for Using Airplane Coordinate Systems

    I'm looking for standards, industry or corporate, that define the use of Airplane Coordinate Systems inside of CAD, CAM, and FEA programs. It has been a long while since I used ACS and I'm now in the position where they would benefit a significant number of product designs I'm working on...
  11. swertel

    Engineering Release Records

    I'm new to creating ERR and am looking for a guiding document/standard that defines typical requirements and format for Engineering Release Records. Can someone point me in the right direction? --Scott http://wertel.eng.pro
  12. swertel

    Changing Design Authority

    I have a unique situation that I'm having trouble balancing between proper revision control and configuration management. But, it is more of a drafting standard question so I'm posting here rather than the CM forum. We developed a product using our part numbers. Now, the customer wants us to...
  13. swertel

    Class I vs. Class II changes

    Does anyone know of a specification or standard that has a definitive explanation of the difference between a Class I and a Class II change? --Scott http://wertel.eng.pro
  14. swertel

    PLM World

    If you guys haven't been keeping up to date, PLM World is currently happening in Dallas this week. You can follow the action via Siemen's blogs or twitter. --Scott http://wertel.eng.pro
  15. swertel

    Collecting Royalties

    I'm curious as to how people verify that the royalties they are collecting from private companies. Take a hypothetical example. A consulting engineer helps a start-up company with the design of a new whiz-bang product. As a start-up, they have little capital to spend for the design up front...
  16. swertel

    Removing Oxides for Alum Processing

    I'm running into a surface finish problem due to, what we think, are oxides after heat treating aluminum. The Part The part is an aluminum tube 6061-O per ASTM B221 or ASTM B241. It is a thin-walled cylindrical tube used as a pressure vessel. The Process After initial forming, the 6061 gets...
  17. swertel

    Alibre 12.1 Available for Download

    Update 12.1 is available for download. Reading the fine print, it states to uninstall 12.0 before installing 12.1. I think that's a little strange for a dot release, or in my book a patch. Just be warned that you may have to manually uninstall first. --Scott http://wertel.eng.pro
  18. swertel

    v12 Released yesterday

    Alibre officially released v12 on the 29th, but they did it around midnight so you couldn't update until yesterday. So far, quite a few positive comments on the Alibre Forums about the improved speed/performance and handy features in this new version. --Scott http://wertel.eng.pro
  19. swertel

    Single-use license now requires maintenance

    As of v14 M030 patch, even single-use license holders will be required to be on active maintenance to receive any software updates. In order to get maintenance, you will be forced to upgrade to a server license or node-locked license. In other words, say goodbye to reasonably priced Mathcad...
  20. swertel

    Is there such a thing as support?

    Please help me negotiate through this tech support bubble known as PTC (oh how I miss you Mathsoft). Anyway, I have a single-use license for home use. I haven't used it for a while and when I rebuilt my computer I didn't bother installing MathCad back on it, until last night. I make it...

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