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  1. Buck61

    I'm working on a tolerance stack an

    Hi 3DDAve, Thanks for your initial reply. TA is indeed cumbersome. I'm not clear on your comment "....there is no default orientation tolerance given in your example and this will greatly affect the results." Orientation tolerance, e.g., position? The individual part drawings all have GDT...
  2. Buck61

    I'm working on a tolerance stack an

    I'm working on a tolerance stack analysis to determine the minimum GAP in vertical direction between the BEZEL and CASTING via four parts in assembly shown in attached drawing. A Summary of two issues I’ve encountered (details in items 1 & 2 below): -How to perform a loop analysis to...
  3. Buck61

    Rework Molded Plastic Part

    Absolutely JohnR. That is the plan as mentioned in the last paragraph of my initial post.
  4. Buck61

    Rework Molded Plastic Part

    From information I was given, all 4 sides. Dental drill is a good suggestion. Unfortunately RW of mating part in this case will impact mating with 3rd part in assy (not shown). No formal fit specified however affected part database tol. schedule for dimensions 0-.49"= +/-.005".
  5. Buck61

    Rework Molded Plastic Part

    See respective photos 1 thru 3 below
  6. Buck61

    Rework Molded Plastic Part

    I downloaded files for attachment using window at bottom of 'post' form where it says "Attachment" and "Click Here to upload your file to Engineering.com" at bottom of window (shown below) prior to submitting original thread. I noticed after the fact that no photos appeared or attached. I have...
  7. Buck61

    Rework Molded Plastic Part

    Is there a practical machining method or other process that can uniformly remove about .001”-.005" of material consisting of shut-off flash around the rectangular opening [circled in 1st photo attached]? The opening measures .083 +/-.005" high x .177 +/-.005" wide x .110 +/-.005" deep. The part...
  8. Buck61

    Formed Spring Steel Material

    Hi TVP, I know and am sure that a heat treated spring will work. The primary reason for my question was to find out if anyone is familiar with a flat spring material(s) that can be cold formed without severely injuring oneself. This is why I asked about about possibly designing a spring with...
  9. Buck61

    Formed Spring Steel Material

    Here's "ISO" screen shot. http://files.engineering.com/getfile.aspx?folder=aa315df3-0b6b-4c24-8103-34fdd50e518b&file=2_ISO_Eng_Forum.jpg
  10. Buck61

    Formed Spring Steel Material

    Here is "Profile" screen shot http://www.eng-tips.com/viewthread.cfm?qid=362260http://files.engineering.com/getfile.aspx?folder=d029ff15-fb48-4c13-809d-d30be59687a3&file=1_Profile_Section_Eng_Forum.jpg
  11. Buck61

    Formed Spring Steel Material

    I have attached (2) new views to illustrate more clearly. Actually, crude as it is, the retainer (spring) prototype worked quite well since the adhesive/foam speaker seal withstood IP55 water hose spray applied from outside of device for 45 seconds without any indication of water ingress...
  12. Buck61

    Formed Spring Steel Material

    Hi Desertfox, Deflection is about .10 inches. Stiffness, force and stress are unknown at this time since the only 'spring steel' prototype I have is a modified visor clip x .025" thick where I managed to bend the lower leg slightly to fit into our device.
  13. Buck61

    Formed Spring Steel Material

    Hello, The project I'm working on requires a last minute part added (formed spring, drawing attached) to be used in a closed plastic enclosure. Its intent is to exert force on the far side a stamped metal speaker frame to compress a water seal. I have designed this spring very similar to a...
  14. Buck61

    Sheet Metal Problem Part_ Need New Material or Design?

    Hi, I have a 301 Stainless steel, 1/2 Hard, sheet metal component AKA, Lift [see attachment] that needs improvement: The Lift is part of a printer sub-assembly, a somewhat complex mechanism so, for the sake of of your time & available writing space, I won't go into detail. The Lift itself...
  15. Buck61

    Help! How to handle Unequal Bilateral Tolerance using RSS/MRSS method?

    I do apologize for the way the posting came out- it was not intentional. Thank you drawoh and Kenat for your very helpful inputs! Best Regards, Buck61
  16. Buck61

    Help! How to handle Unequal Bilateral Tolerance using RSS/MRSS method?

    Help! I posted the following question last week and basically got nowhere- please submit solid approach/solution only. Best Regards, Buck61 Hi, I need to know how to go about using an unequal bilateral tolerance when calculating total variation using the RSS tolerance analysis method. All...
  17. Buck61

    RSS using unequal bilateral tolerance

    Hi Danstro, In lieu of a long explanation, the unequal bilateral tolerance is fixed and must remain on the drawing as .055" +.002"/-.005". I neglected in the original post to suggest making the unequal bilateral an equal bilateral tolerance so it can be used in calculating RSS, i.e., .0535"...
  18. Buck61

    RSS using unequal bilateral tolerance

    Hi, I need to know how to go about using an unequal bilateral tolerance when calculating total variation using the RSS tolerance analysis method. All RSS examples I have seen use uniform bilateral tolerances. A text I have at work "Dimensional Management" (by Mark Curtis c2002) which...

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