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Recent content by gwr2

  1. gwr2

    Annealing PC as a forming process?

    What would be the best suited material for a safety shield? Everything is a give and take, other plastics will have their own inherent functional limitations. Thoughts on transparant ABS, Impact modified PMMA, or Styrolux? considering that inevitably the end user might disregard warnings, and...
  2. gwr2

    Annealing PC as a forming process?

    Good Point. We'll look into the polarize analysis tomorrow. Do you have any idea when stress becomes an issue? If a part is effectively heated and formed to a 3" radius, but has to be installed in a 2.5" radius frame.... is this enough stress to have drastic ESC? Basically, How close is...
  3. gwr2

    Annealing PC as a forming process?

    Thanks for the feadback. Today we are noticing a few pock marks, much like a fish eye mark on a spray painted surface. I'm guessing this is moisture related, as you indicated. Since we do have 2 ovens available, we are going to try to pre-dry at 120C for an extended period, then process for...
  4. gwr2

    Annealing PC as a forming process?

    We are manufacturing a curved face shield out of Polycarbonate. It is die cut from a flat sheet of Makrolon GP. The frame that it gets mounted in has a simple bend around 1 axis, forming a cylindrical shape. Easy enough shape to make. Is it possible to build a fixture which holds the flat...
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