What is the best way to resaw material for bookmatching? I assume (for a cabinet shop) it is with a bandsaw. I have an 18" bandsaw (Grizzly) and I am considering purchasing an aftermarket fence and guides, if this is the right direction. Any suggestions on methods, aftermarket products, and blades would be greatly appreciated.
I'm not too confident that you'll get good results with an import machine. If you have trouble, try using a narrow kerf blade on your table saw and pre-cut top and bottom on the material to give the bandsaw something to follow.
I do it with a very stout fence with backing gussets to help prevent flex. My resaw fence has a ledge screwed to its bottom edge to support the board that is being resawn and the vertical part of the fence is a little shorter than the saw's maximum height of cut. In addition to the gussets, I tied the top of the fence to the saw's frame (metal bracket tapped and machine screwed to an area of the saw that would not be weakened by the holes and screws) and fastened to the wood fence with wood screws. This eliminates any outward flexing of the fence's top edge as I resaw. I also built a rack of adjustable feather boards spaced about 1.5" apart that keep the stock pressed tightly against the fence just in front of the blade's teeth.
Laminate the fence's face and support ledge with scrap laminate to ease friction. Use your ears as you saw to determine how hard you can push and how fast you can saw with your equipment. Some bandsaw blades will drift in the cut and the fence may need to be angled in the direction of the drift to compensate for it. To determine the drift, take a two foot long 1" thick piece of stock and mark a straight line down the length of the center of an edge. Without using a fence, start cutting down the middle of the pencil mark and adjust the angle of your feed until you can push in that direction and the blade stays on course. Now, hold the board right where it is and stop the saw. Mark the saw's top and then clamp your fence down at that angle.
As for the tablesaw comment, that is not appropriate. Your bandsaw (import or not) is much safer and a better use of material. You might want to look into some of the veneer blades that are very thin.