First I tried to search your name as George suggested but I saw that there was no such thread in the database, initiated by you. Then I tried 20ma and opened some links and got the one you needed.

I had already requested the forum administrators to incorporate a more sophisticated search.

For example

1) At times one remembers the month when there was a certain post, but he can't recall the exact search words to search for. At present there is no way that anyone can go directly to a specific date/month in the archive. You have to go through dozens of pages to reach a specific date/month.
2) There is no way that you can see the threads (not the posts/replies) initiated by you or anybody else. If you search by name of person, then you come accross all the posts he/she has posted.
3) Search should be modified to include From Date to To Date. This way one can see the certain topics/keywords over a specific period of time.
4) May be search can be modified to include poster's name as well such as I may be able to look for Kai's posts on stepper motors.

If anyone has more ideas for improvement in search process, please bring them up here.