I'm building a new shop; I plan on using reclaimed cabinets both upper and lower for storage. However I'm thinking about using a 3/4" MDF with a 3/4" X 2 1/4 " reclaimed hardwood floor material as the work top. I'm open for your opinions.
Depending on size but you might want to think about a solid core door. It will be solid and not that expensive.
Just an idea.