Join Date: Apr 2012
Location: Waynesfield, OH
Woodenthings approach is the one I would use, consider a piece of MDF for the strightedge, cheap and pretty square from the getgo. Typically, when I strightedge a piece, I'll look to cut off the least amount of stock that will provide that strightedge...worrying about the grain not being straight (it never is anyway) doesn't help. You then use the straight edge you created against your table saw fence to rip the other edge staright, viola!, it's parallel and once you trim the ends it will be a rectangle.
"I long for the days when coke was a cola and a joint was a bad place to be" (Merle Haggard)