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Recent content by PATERLEY

  1. PATERLEY

    Notching/drilling rafters

    Hey everyone, I apologize. The info I gave was not complete and incorrect in come cases. The ridge beam is indeed structural (6x14). No collar ties or anything like that for the rest of the rafters that are in place. The span is only 7 ft for the 2x12’s. With all the info I have, I think...
  2. PATERLEY

    Notching/drilling rafters

    Hello, I’m on a job taking out a drop ceiling and converting to a vault. There are currently 2x12 rafters 24 OC spanning 12-14 feet at a 6:12 pitch and 40 snow load. Problem is, there is a 2” vent that penetrates through right in the middle of my vault, with the existing pipe below the rafters...
  3. PATERLEY

    SEBS Characteristics?

    For reference, we use United Soft Plastics T-80A-NT-1-97F SEBS-based Thermoplastic Elastomer. The data sheet is attached.https://files.engineering.com/getfile.aspx?folder=83bfb0e1-53d0-40c0-8c5d-735091cce432&file=ST-80A-NT-1-97F.pdf
  4. PATERLEY

    SEBS Characteristics?

    Hello, I am hoping to get some clarity regarding a TPE we use for a kitchen sink strainer. Background: We make a clog-resistant, non-stick kitchen sink strainer. We are being required to support our "claim" of the non stick nature of the product. We find it to be non-stick because of the...
  5. PATERLEY

    TPE surface tension water drainage issue

    Thanks Compositepro, If I am understanding you correctly, the material is too *hydrophobic* and less wettable, so what I want is more wettability, so there is better water distribution and thus drainage. I know all of these ideas are interconnected but not necessarily interchangeable. I am...
  6. PATERLEY

    TPE surface tension water drainage issue

    Thanks for your reply! We were trying to maximize drainage, while not making the holes too large so scraps can pass through. The spray is an interesting idea, we will see if that works. We will probably try the A-1 polish. At this point, to enlarge the holes would involve retooling 1/2 of...
  7. PATERLEY

    TPE surface tension water drainage issue

    Hello All, I designed a TPE sink strainer. The original design and prototypes were urethane casted with a "looks like feels like" resin, but was not TPE. The initial prototype did not have draft, but had the same number of drainage holes, air vents, etc. For injection molding, 3 degrees of...
  8. PATERLEY

    Material Choice: TPE VS TPU for Injection Molding

    This should probably be in plastics engineering instead. Apologies. I am not sure how to move it...
  9. PATERLEY

    Material Choice: TPE VS TPU for Injection Molding

    Hello All, First post here. I have a quandary that I would love some input on. A little background: About 4 months ago I designed a new sink strainer that I have started the process to manufacture here in the US. At the time, I felt 75 Shore A TPE (unisoft) would be the best option in terms...
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