Make sure you use a reliable square to set the fence. If your glueing boards together to make one wide one, you'll end up with a wave or a cup if it's not set dead nutz 90 degrees. A properly set up jointer will yeild the best glue edges of anything (with decently sharp blades). If your doing something like a miter lock joint on a router table, run the edges down a jointer first and you can't go wrong.
When resawing, especially like I do from chain sawn chuncks, the jointer is the best way to flaten one wide side (providing the jointer is wide enough) and one narrow side. Be sure to do the wide side first, and hold it tight to the fence when doing the narrow side. Then move to the table saw, rip the consistant width taking off the un jointed side with wide jointed side to the TS table, then move to the thickness planer, and set the thickness. Your ready to cut lengths, and machine joints.
John E. Adams<br /><a href=\"http://www.woodys-workshop.com\" target=\"_blank\">www.woodys-workshop.com</a>