Hi Angela, The doughnuts are more commonly called preforms. They are offered by most of the solder manufacturers (Alpha, Kester, etc.) and when placed over your pins, can be reflowed in an oven since there is flux mixed in. Please feel free to call me if I can be of assistance. Regards, Ed Popielarski QTA Machine 10 Mc Laren, Ste D Irvine, Ca. 92618 Phone:949-581-6601 Fax: 949-581-2448 Cel: 949-337-2578 WWW.QTA.NET --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------