Ultrasonic - I have Been following your post for a long time and just wanted to say thank you for the great information. Just when I start to get a handle on Tec's you would provide new information and I have to rethink everything. It has been a pleasure to read and follow your posts on tec's and your adventures in manufacturing and design.
Unfortunatly about all I can do now is read, two little ones keep me too busy to do anything else.
Keep up the posts, there are a lot of people who value your insight and knowledge.