input: [Cause] Excessive dryness from lack of oir or exposure to heat [Solution] Small splits in the end grain can be expected. Most of the time this is only a cosmetic condition and needs no attention. But if you want to fill the splits, use a good wood filler. After filling the split, let the filler dry, then sand off any excess and re-oil. [Problem] 
output: Edge Cracks and Splits
options: E d g e C r a c k s a n d S p l i t s
options: W a r p i n g
options: S t a i n s
options: G o u g e s , D e n t s
options: D a r k S t r e a k s i n W o o d
options: O i l R e s i d u e