I did one of these too(theres a thread somewhere)I like building small boxes, they're fun and a good chance to try new techniques. On one of my woodworking YouTube binges, I came across a video of someone making a miniature Japanese toolbox and I thought the design was awesome so had to try it.
The locking mechanism is really cool.
Wood is a mix of whatever thin scraps I had for the most part. The handles are made from Padauk, which was insanely difficult to work with which is why I didn't use it anywhere else in the build.
Looking forward to making the next one with maybe a few tweaks to the design. Want to make a larger one too at some point.
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For the wedge, i found that if you make it overlong, then tap it in a tiny bit firmer than it would normally sit, mark the lines where it sits flush and cut off the excess, you get a neater finish to it.
Took a couple of goes to get the correct taper.