by FragTag » Thu Oct 15, 2015 2:13 pm
Another question on a related thread. When degaussing silicon rubber (Ultrasil Pro), without being able to watch the process due to the paint pot lid (i.e. see it bubble up to breaking point and release), what vacuum do you take your mix to and how long do you wait for it to settle before reopening the chamber and using the silicon? My first attempt was not great with it bubbling over and still having bubbles in it when I opened the lid, despite it being in a very large container for a small test run sample (2x the volume of silicon). My pump is an old laboratory pump that pulls down very quickly (around 20 secs to 29.0inHg - rated to 29.9inHg). I was wondering if it was pulling vacuum too quickly and causing a violent reaction?