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  1. Nellysdad

    Smooth motion at low rpm with VFD

    Get a Smart Motor from Moog-Animatics in Milpitas Ca
  2. Nellysdad

    Consistent 1300L cure

    I am looking for a combined heater and blower unit similar to an industrial heat gun for heat shrink tubing, but one that could be mounted upon a box type structure and be vented to act like a kiln-like system. Max temp 100 deg F. I need to cure 3M 1300L which is a contact adhesive. The...
  3. Nellysdad

    Acceptable magnetism from machining

    Thanks for the response Pete, perhaps my inquiry was not very clear. I know that magnetism is induced in material as it being machined. I would like to know what "acceptable" levels of magnetism are induced by processing, before they are magnetized in a formal magnetizing process. Basically we...
  4. Nellysdad

    Acceptable magnetism from machining

    Can anyone tell me an acceptable level of magnetism from the maching operation? ie. grinding. I am informed that there is some level permissible, but am yet to have that quantified. A Gauss level? regards
  5. Nellysdad

    Property that permits magnetism

    Sorry, sorry, the material is neodymium. I cannot believe that there is no test whatsoever. There must be a some way of measuring whatever property it is that Magnetism has an affinity for. I agree, the processing of the magnet shape and form is critical but there has to be a method of testing...
  6. Nellysdad

    Property that permits magnetism

    I believe the property required in a material that permits a desired level of magnetism is called "permeability", but I have also heard "permittivity" used. Is there a way to measure a raw material to define if it is suitable for magnetizing to a certain Gauss level. We have some magnets that...
  7. Nellysdad

    Yellow Zinc ASTMB633 type 2 in holes

    What is an acceptable aspect ratio for electroplating of this kind? What is the recommended process for atmospheric corrosion in thin narrow holes that are inaccessible to electroplating? Regards
  8. Nellysdad

    BeCu ribbon Alternate

    Sorry for not specifying my need for an alternate. The writing is on the wall. Eventually, it will be banned in Europe. Regards
  9. Nellysdad

    BeCu ribbon Alternate

    Thanks Nick but I am trying to move away from Be..I forgot to mention that in my original posting. Regards
  10. Nellysdad

    BeCu ribbon Alternate

    We use a BeCu ribbon in one of our loudspeakers. It is under constant vibration/movement and we therefore need the constant flexibility (elasticity?) property of this material. Does anyone know of an alternate material that will withstand constant movement and heat up to 80 deg c without...
  11. Nellysdad

    Torque on Cross head screws

    Can anyone direct me to a repeatable, accurate, measurable way to tighten cross head screws. We are using an electric screwdriver and #1 bit currently but the charge on the screwdriver eventually diminishes, the bit eventually gets worn (replaced every 4 weeks) and the assemblers change. I am...
  12. Nellysdad

    Inspection of a fabric diaphragm

    Hi, can anyone tell me how I would accurately inspect a round diaphragm that begins at the outer edge as a horizontal face, moves inwards, blends into a sine-wave form (3x pitches) blends into a horizontal, then blends into an angle and ends at a through hole. The part is made of fabric and I...
  13. Nellysdad

    Yellow Zinc ASTMB633 type 2 in holes

    Hi, am I asking too much of this application to expect it to reach inside a dia 10 mm hole x 15 mm deep. Parent material is AISI 1008 Steel. What is the limiting "aspect ratio" or min dia hole? Also, I see discoloration at the point of contact from the "hanging wire". I believe it to be from the...
  14. Nellysdad

    Neodimium magnets

    Sure, we have a test where we score the sample part with a knife and press some sticky-tape on there and then we rip the tape off...fairly basic really, but it does identify some bad batches. Later on,in service, we see peeling occuring, that was not apparent at receiving inspection, even with...
  15. Nellysdad

    Neodimium magnets

    We have a couple of our neodimium magnets plated in Nickel. ASTMB633 We need a test for our receiving inspection other than the std "peel test" to test for adhesion, which does not appear to catch all the discrepant parts. Any ideas are welcome. Regards
  16. Nellysdad

    who produces 440B?

    You could try a company called Uddeholme. they do make some exotic stainless steels
  17. Nellysdad

    T651 versus T6 Aluminum

    I am told that T6 and T651 are "basically" the same. I stress relieve T6 in-house at 320-350 deg for 4 hrs after machining and that has worked fine. I believe that T651 is already stress relieved via stretching. Can I use the same technique without altering the FINAL properties too much?
  18. Nellysdad

    Cad Plate v Alcohol

    Thankou for your enthusiastic replies. I forgot to mention the parent metal was AlBemet. I want to believe 'Yates' to be nearest to what actually happened....time will tell! If not, then it sounds like there may be a market for this "Alcohol".
  19. Nellysdad

    Cad Plate v Alcohol

    We cleaned an inkstamp part mark with alcohol and the cad plating came right off, exposing the nickel plating beneath. I was unaware that alcohol would remove cad. Is this just poor plating/poor adhesion?
  20. Nellysdad

    Migration from AutoCAD to Solidworks - Warranted??

    Since ProE and Solidworks are now the same price, go the whole hog and get ProE. Its ability to save in just about any universal file.extension is priceless when you have a diverse customer base. I suggest that the life expectancy will be much longer with this system. Training on Solidworks is 6...

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