Wine storage racks can be tough to construct from scratch if you are not an experienced carpenter. An inferior homemade design can put a wine collection at grave risk. The average bottle of wine weighs three pounds. It is not uncommon to have 24 bottles in a vertical stack on an 8'-high wall. This means you can have about 200 pounds of wine for every lineal foot of storage.
Redwood is an excellent wood for wine storage systems.
Do not use woods like cedar that have an aroma. Never stain the wood in a storage room. These odors can penetrate the corks and ruin the flavor of wine. If I wanted a place to store wine, I would build the room myself but purchase the wine storage kits or wall systems. They are affordable, and the simple ones can be put together with ease.