The pots in the EML 10 are Allen Bradley with an all metal casing. Maybe he used a small vacuum after drilling just in case some fillings fell inside. On other projects I've used a chemical called Super Contact Cleaner with Poly Phenyl Ether (MG Chemical). I was told to use only a very small amount. It's pretty potent. Works well. Check out messages 250 and 251: http://launch.groups.yahoo.com/group/emlsynth/message/251
Message
Re: cleaning EML pots
2006-02-03 by spogfrawne