RE: Building from scratch
Good knives and hand saws. I use Exacto. Change blades often. Good measuring devices. I use a 6", 18", and 36" rulers, all metal. Good alignment devices. Squares, triangles, adjustable protractors, etc. A good work table. I have an old library table topped with a solid core door. I cover that with ceiling tile with the backside up. Then cover that with 3/32" cork. Be sure it's flat and straight. Get your tools from Lowe's, Home Depot, Sears, or the like; not Big Lots or Harbor Freight.
Welcome to the world of scratch building. It's a LOT of fun!
Dr.1