one of my hobbies is fooling with bicycles. one i'm working on now is a cargo type bike that will have about a 2'x3' flatbed like area on it. even though i'll probaly very seldom use it, let alone choose a rainy day to use it, i still want to use something that will hold up to some exposure to weather. i was thinking marine grade or treated plywood, but i came across a deal on some cabinet grade that would look nice for the build. i've been reading a little on things like voids and glues used and cabinet grade seems like it might work for me if it doesn't get exposed to wet weather very often. think it would hold up with a coat of urethane on it? i think the most exposure it would regularly get is being kept in an unheated, but dry garage, but as stated, maybe if i use it and get caught in rain, or it's outside overnight and ends up with dew on it, i don't want to have to start over and have to buy better wood a second time. what say ye good people? thanks.