I use frame and panel construction for many of my cases. There are a few well-known rules of good frame and panel case-making that ensure a warp-free, durable case. In case my readers are unfamiliar with these rules, they are:
- The grooves in the frame parts (rails and stiles) should be centered on the edge of the frame parts, and at least 1/4" from the edge.
- The depth of the frame grooves should be no deeper than the distance of the groove from the edges of the frame part. This ensures the frame is strong enough stand up to use and abuse.
- The tongues of the panel should not reach all the way to the bottoms of the grooves in the frame parts. This allows for side-to-side expansion of the panel and the frame. If the panel DOES touch the bottoms of the grooves, any expansion of the parts will result in warping of the assembly.
- If using a solid-wood panel, the grooves in the frame should be slightly wider than the tongue on the panel. This lets the panel get thicker (due to seasonal movement), without splitting the frame parts.
- Don't glue the panel into the frame!
