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Recent content by jdm2008

  1. jdm2008

    Rubber Manufacturing

    Will either of these create a irritating substance to be exposed on the rubber?
  2. jdm2008

    Rubber Manufacturing

    Thanks for your response. I am more concerned with pinning down the irritation cause to the rubber bag(or not). What will happen when the iron oxide coating fails, same with oxidation? Will this cause oxidation?
  3. jdm2008

    Shorted components

    I will post a photo when I have the board in front of me.
  4. jdm2008

    Shorted components

    I wish to add, that I don't have the print for the circuit.
  5. jdm2008

    Shorted components

    I have no circuit design experience and have a manufacturing/mechanical background, so this question may sound stupid. Is it common practice(or done at all) to design a board so that two components are shorted(on purpose)? Or is this most definitely a manufacturing error? The components on the...
  6. jdm2008

    Rubber Manufacturing

    I have some rubber in a system where I noticed a yellow color on the rubber inside and also on place surrounding it. I noticed this after a long period of time(it was not there when the system was first made). My research indicates this may be sulfur. The rubber I have will be used in an...
  7. jdm2008

    PCB Mounted Pressure Sensor

    I am having a problem with this pressure sensor. http://cache.freescale.com/files/sensors/doc/data_sheet/MPXH6300A.pdf?pspll=1 The sensor is glued into a hole that goes to the gas under test. The gas is leaking however so I am looking for a threaded sensor as similiar as possible. I am not an...
  8. jdm2008

    Black stains on silver powder coat

    We have a brightsilver powdercoat that we are using. With this paint, we have been having issues that with even light handlingg(think rubbing your thumb with the same force that will turn on a light switch) it will develop a distinct black stain on the powdercoat that cannot be removed. Dooes...
  9. jdm2008

    Grinding Leaded Glass

    Thanks for the help everybody. I do not think the reason is a health issue since the same supplier also cuts the class with a milling machine. I will have to get back with more details.
  10. jdm2008

    Fixed mounted expandable Mandrel

    Thanks everyone. Mike I did end up purchasing what i needed from smw, thats for your help
  11. jdm2008

    Grinding Leaded Glass

    I need to grind about(.015-.030) a quarter inch from the bottom of a leaded glass sheet so it can fit into a sliding track to make the glass thinner. I was surprised when the I called the guy who does some other processing steps tell me he could not do this. Is there some reason why this is a...
  12. jdm2008

    Fixed mounted expandable Mandrel

    I'm looking for a fixed mount expandable mandrel. I have found a few of what I was looking for however none have been long enough. I need the blades(or expandable part, whatever it is) to be at least 1.5" inches long preferably 3-4 inches long. I have found plenty of mandrels where you press...
  13. jdm2008

    Acrylic and Alcohol

    To swall All over To Btruehood I have tried cast and that works fine(some cracking but it retains it structual integrity). However this application is in production, so switching to cast will be very expensive. I've tried getting rid of the flame treatment or using a cooler gun but that...
  14. jdm2008

    Machining Acrylic and Residual Stresses

    I am machining a tube of acrylic. I am noticing that afterwords when putting the acrylic into contact with solvents(Alcohol in particular), is cracking at a very rapid rate. However when I place the stock material in contact with this same solvent it does not crack. What can I vary within the...
  15. jdm2008

    Acrylic and Alcohol

    Will switching from a manual mill to a waterjet cutter make any difference?

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