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  • Users: Mechanic77
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  1. Mechanic77

    Sealing a rectangular hole on a cylinder

    Hi all, I'm a Mechanical design engineer, new to design for sealing. I was given a task at my workplace, to design a plastic cylinder (made of ABS+PC) with a rectangular hole (for a lens made of HDPE). The hole for the lens should be sealed to the level of IPx5, without the use of...
  2. Mechanic77

    Isolating a screw which fails under ESD test

    Hello all, We are having problems with a carbon-steel M3x16 self-tapping screw, which fails under voltage pulse test (25 kilo-Volts). It is a self tapping screw for plastics, and when under test, voltage passes through it into the system. I'm looking for a solution, in the form of an isolated...
  3. Mechanic77

    Water flow system - Design and Optimization

    Hello all, I'm a Mechanical engineer with no prior experience in designing flow systems. I'm struggling with a hydraulic system that I have to design. the number of unknowns is large. but maybe by dividing the system to small sections, a solution can be found. I attached a schematic drawing...

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