My works Two types 27-step Himitsu-bako
18-Feb-2025Today, I started attaching the final panel of the 4-sun 27-step puzzle box (Himitsu-bako).The final panel, as...
Hiroyuki Oka
My works 
My works 27-step / side panels
17-Feb-2025Today, I worked on making and attaching the side panels for the 4-sun 27-step puzzle box that I have been wor...
My works 4-sun 27-step puzzle box
14-Feb-2025Today, I started making the structural parts of the 4-sun 27-step puzzle box. I began with the frame panels a...
My works Coating of Japanese puzzle boxes
13-Feb-2025Today, I started with the 3-sun 12-steps puzzle boxes coat painting process. In the morning, I sanded the pri...
My works 3-sun 12-step puzzle boxes
12-Feb-2025Today, I worked on the finishing process and priming of the 3-sun 12-step puzzle box. Along with this box, I ...
My works Coating of 4.2-sun puzzle box
11-Feb-2025Today is a national holiday in Japan (National Foundation Day). In reality, the exact date of Japan’s foundin...
My works 4.2-sun 21-step puzzle box
10-Feb-2025Today is Monday, the start of a new week. However, tomorrow, Tuesday, is "National Foundation Day" in Japan, ...
My works The side panels of 4.2-sun box
07-Feb-2025Today is a very windy day, which should help the wood dry faster. On days like this, it's great when I have w...
My works 3-sun puzzle box – side panels
06-Feb-2025Today, I made some progress on the 4.2-sun and 3-sun Japanese puzzle boxes.First, I attached the top and bott...
My works 36-step Japanese puzzle box
05-Feb-2025Today was an extremely cold day. From my workshop, I can see Mount Fuji, and on some days, the wind from ther...