Back in 1998 we investigated most of the machines on the market: Ersa, Weller, APE, OK/Metcal, AirVac/Zevac, Conceptronic, Sierra Summit, Weller, PDR etc etc. What you want depends on the skill level you expect your operators to have for this, how much rework you have to do and the cost of the BGAs you are replacing... And what you budget for a machine is! We found the OK BGA3500 system the most flexible and easiest to use and best for us - and we have been very happy with it. The newer Metcal APR-5000 version seems to be even better and has a "large PCB" version. Our sister factory in the USA went with the AirVac, however, and they like that a lot too. Nigel Burtt Production Engineering Manager Dolby Labs Inc - European HQ Email: [log in to unmask] Tel: +44 (0)1793 842132 [direct line with voicemail] Fax: +44 (0)1793 842101 ----------------------------------------- This message (including any attachments) may contain confidential information intended for a specific individual and purpose. If you are not the intended recipient, delete this message. If you are not the intended recipient, disclosing, copying, distributing, or taking any action based on this message is strictly prohibited. --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------