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  • Users: Nellysdad
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  1. 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...
  2. 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
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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
  9. 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?
  10. 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?
  11. Nellysdad

    Flatness in Titanium

    I have a requirement to machine a flatness on an area of less than 16mm to with 0.001mm....yes mm! This is on a titanium part and I need a source that is capable of achieving this....any help would be appreciated.
  12. Nellysdad

    V.A.R.

    Can anyone shed any light on this material. I have heard the phrase "Vacuum Arc Remelt" but what does that mean. I believe it is stainles but what are its properties and application. i.e. why would we use this?
  13. Nellysdad

    Aluminum Alloys

    Can someone tell me (in laymans terms) the difference between stress relieve and anneal please?
  14. Nellysdad

    Kerf Loss

    Can anyone shed some light on this term for me please? i.e. History, meaning, application etc Thanx
  15. Nellysdad

    Helicoil callout

    I have a drawing here with helicoil callout NAS1130-4F-15/C I make this to be a 1/4-28UNF x 1.5Dia tangless free running but I do not know what the /C denotes! I have scoured the Emhart website to no avail Any ideas? .....Seasons Greetings all...
  16. Nellysdad

    Anodizing Titanium

    Can anyone tell me the dimensional effect of anodizing titanium please?
  17. Nellysdad

    Minimum lot forgings

    I need about 100 pc forge of 304L ss. Dia 12" x 4". Does anyone know of a supplier who would produce a min qty like this?
  18. Nellysdad

    vacuum chuck

    I need to machine to .018 thick (7"square). - one off job. Where might I get a used vacuum chuck
  19. Nellysdad

    Blanchard grinding AlBemet

    I need to grind some AlBemet plates 2' sq x 1/2" thk. I need .010" removed from each side. Double disc grinding would be Ok too. Does anyone know of a source that specialise in this/would perform this operation ?
  20. Nellysdad

    NPT versus FNPT

    I have a drawing which displays FNPT. I am familiar with NPT and its variants but not this one. What about FPT. Any info is appreciated.

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