Summary for aluminum cast finish Discussion
The focus keyphrase aluminum cast finish comes up in a question about whether a low-cost coating could be applied to the inside walls of a cast aluminum chamber used for chemical etching and plasma processing to reduce porosity and improve vacuum integrity. The excerpt provided shows the question from Michael D Morgan of St. Petersburg, Florida, but it does not include any answer text or named respondent advice. Because no reply is visible in the source excerpt, the thread cannot be summarized beyond the original problem statement. The practical issue raised is whether an internal finish can seal cast aluminum enough for vacuum service in a corrosive process environment, but the available text does not confirm any recommended product, method, or outcome.
Q. Is there a low cost finish that can be applied to the inside walls of a cast Aluminum chamber, designed for chemical etching and plasma process, which will help prevent porosity and increase vacuum integrity?
Michael D Morgan
– St. Petersburg, Florida, USA
2003
A. Loctite is probably the leader in providing sealants for casting porosity. They offer a number of products, but in general they are based on low viscosity, anaerobic resins similar to their adhesives and threadlocking compounds. I recommend visiting their website and discussing the application with them further.
Toby Padfield
– Troy, Michigan