One of the biggest factors - maybe frustrating - when trying to match grain on larger tops is the extra amount of wood needed in order to find adjoining matching grain. Sometimes volumes approaching 2X the needed volume is required to get a real good match. In my pocketbook, that volume is limited to around 1.5 times the volume.
Also there is a color aspect to the selected pieces. This may be the only issue on some tops. If we can select (or order) rift or quartersawn wood grain is not a problem.
Here are some photos of a couple of pieces recently finished:
First is the coffee table with a lifting top. Since this top was made from all quartersawn and riftsawn oak. Grain was no longer the major issue. Color had to be arranged so the changes looked "evenly fluctuating".
End view of top so you can see the alternating colors of boards.
[ATTACH]9015[/ATTACH]
Close up of finished top - It's not really a white as it looks. The thing that looks like a brand is a blue stain in the wood. My guess is this stain was surrounding an old dead knot.
[ATTACH]9016[/ATTACH]
Best photo I have
showing finished table top.
[ATTACH]9017[/ATTACH]
Top of blanket chest - can't see how many boards used. Lucked out having only 1.25 amount of volume for top boards.
[ATTACH]9018[/ATTACH]
Inside of same top showing 6 boards joined in the top. Best match was on the to 2 and the bottom 2 boards.
[ATTACH]9019[/ATTACH]
Octogenarian's have an earned right to be a curmudgeon.
Chuck in Lancaster, CA