Nolo, your spline and kerf system will work just fine, as well as you dado for the bottom, sounds like you have a good plan. However, try this when you do your glue-up. If you are using an exotic wood like rosewood, ebony or any wood with a hi oil content use a urethane glue. for all other hardwoods use your friendly neighborhood wood glue. before adding your glue wipe down the surface of each joint with methanol Alcohol (found at your local CVS). if you can't find methanol rubbing alcohol will work. what this does is it opens the pores of the wood so the glue can penetrate deeper into the end-grain. let the the methanol evaporate before adding the glue. you will do two applications of glue on each surface. the first, use a razor blade to press the glue firmly into the workpiece. do this on all surfaces. imagine the glue as spackle and the razor as a putty knife and you are trying to fill the all the little holes. Now, the second application is a thin even film on the joint as well as the spline. clamp and let dry. be sure your box is square while clamping. once this is dry it will never come apart.
Last edited by Pinch Dog; 04-14-2009 at 02:23 AM.