workmytractor
Bronze Member
box blade counter weight. 
What he said. Wide grain like that will crack, you might be lucky to 'control' the crack, but you ain't going to stop it..FWIW, fast growing wood w wide growth rings is not as strong or as dimensionally stable as the same species w a slow growth rate (tight rings).
Slice it in 2" thick pieces, finish, put numbers and a cheap clock unit in them. Sell them as rustic clocks.