is depend how big and what u mean.

Milamine board usually is not more then 8ft so more then that the grain will be diff already. or if u mean vertical grain or horizontal grain, then i will say, of coz they have to follow.

ok let me tell u horizontal can follow the grain and i bet u will not get what u want if u not tell them at first. u can forget it if it's more than 8 feet, no way you can follow grain

If you cabinet is within 8ft, there should be no problem to continue the grain, sometime, some KC shop are not making the door with the same pcs of wood, becoz sometime the door got big and small, if continue the grain, may have wastage a lot, so they just mix and match with diff pcs of wood to save thier cost. Another situation is, those door are cut out by diff ppl, example, swing door are done by 1 worker, but drawer done by another worker, then sure the wood will not be able to join.

My name is Tim by the way. ^^