[PSUBS-MAILIST] Pre-machined Acrylic Prep

[Jon Wallace via Personal_Submersibles]

 Hello Alan.  I agree a regular stove is a possibility in most cases although a finer temperature controller would be necessary through use of a PID.  However in my case the viewport size is 24 inch which is too large for a regular house oven so I'm going to have to build a small convection oven.  Luckily we are talking relatively low temps so it doesn't have to be designed to forge-like specifications.
Jon

    On Friday, September 2, 2022 at 05:41:30 PM EDT, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Jon,I bent some thick acrylic that I was going to attach to a dome for mounting.The acrylic ring was in 2 pieces & fitted in a standard oven, from memory mounted on wood.I drilled a hole from the warming tray through to the main oven to heat the oven with the warming tray element & monitored the temperature with a probe & external monitor. I was able to keep the temperature within the required parameters by manually monitoring it & infrequently turning the oven off and on.Just mentioning this as it can easily be done, however I was up all night while it cooled.There are lots of kiln temperature controllers on the market where you can program the heating and cooling profiles. You would need a fan (from an old oven) to distribute the temperature evenly & maybe a few temperature monitors to check that the fan is keeping the temperature even.Alan

  
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