You can make a fixture that will allow you to rotate the board providing your machine width is enough to handle the board and fixture turned as much as 45 degrees. Yes, this can make a big difference( but not always) on skips but you should be able to eliminate skips by using a good dual wave system and the right process unless the design layout is really bad and then nothing will help. Rotating the board somewhere between say, 5 degrees and 45 degrees will also help to eliminate bridging on connectors and inline components. There is however a price to pay in the cost of this fixtures. Ride The Wave, Ken Kirby Speedline Technologies (Embedded image moved "Collins Graham" <[log in to unmask]> to file: 01/27/2000 11:44 AM pic31419.pcx) To: [log in to unmask] cc: (bcc: Kenneth Kirby/ElectrovertUS/Cookson) Subject: [TN] wave soldering - board rotation Is the TechNet back up? Yippee! Good day TechNet! Has anyone out in wave soldering land tried using a wave soldering fixture that allows you to change the rotation of the board so that the edge of the board isn't parallel to the conveyor? I'm told that rotating the board slightly (say 5 degrees - not 90 degrees!) can reduce the occurrence of solder skips on SMT chips (caps and resistors). Any experience out there to confirm or deny this? Final note: the board design is not suitable for a paste reflow of the SMT parts followed by use of a partial wave fixture. Otherwise that would be my #1 choice... regards, Graham Collins Process Engineer, Litton Systems Canada, Atlantic Facility (902) 873-2000 ext 6215 ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################