Osprey:
I know there are several ways to inlet a patchbox but you may want to take a look at this link
INLAYING LARGE PIECES LIKE PATCHBOXES
The link in that link called "INSTALLING INLAYS" might be a good post for you to read too. It will help with some of those fancy patterns you have to work on.
By the way, several times in my posts about installing inlays and patchboxes you will see me say things like, "Using a pencil, draw...".
I need to mention that using a pencil is (IMO) only good for laying out the locations of the inlay. NEVER use a pencil line that is drawn on the stock as a guide to cut the actual pocket.
ALWAYS use the actual inlay, glued or clamped to the stock as the guide for a pointed Exacto razor knife to stab in the edge of the pocket.
Speaking of Exacto (and similar) knifes get one that uses the #2 blade. Its larger size makes it a better choice for this work.
Also, use a whet stone or sandpaper to remove the sharp edge of the blade right back where it meets the handle. You won't need this edge back there and removing it will keep you from having to solve the big mystery.
What mystery? Well, as your working suddenly you will notice red blobs appearing on the wood.
"What the hell is that?" you will say. Then you will find that you slid your finger forward onto the edge of the blade and your leaking your fluids onto the stock. :cursing: