[PSUBS-MAILIST] epoxy domes

[hank pronk via Personal_Submersibles]

 Jon, I really enjoy testing things, and I have test ports for others and even compressive effects on gaskets.I will keep detailed records and will share results but not formulas or material brands etc.  I am worried any person can read this and maybe get in trouble with my information.  I will gladly share with the core of the group off list.Hank
    On Thursday, August 4, 2022, 03:16:48 PM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
  You might have opened a can of worms Hank.  I can see a new sign on your garage...Pronk Testing Labs.  :)  Since you are just starting this project, I encourage you to keep detailed records of empirical data and keep a good QA mindset starting with the exact epoxy product you are using, amounts, mixing, casting, etc.  What comes to my mind is that "epoxy" is a rather ubiquitous term and may lead some to believe any kind of epoxy is suitable for the application, including using 5-minute epoxy with the built in mixing syringe.  Detailed information about the approach you take to mixing, removing bubbles, curing, shrinkage, and machining will be very important.  As well, repetitive destructive testing details will be important data points and hopefully whatever budget you've got for this project will allow for many tests to be performed.  Stachiw has information in his book regarding testing that may be worth mimicking for this project such as impact testing, especially under load conditions.
Looking forward to seeing updates from you on this project.
Jon


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