My works Hexagon 6-step puzzle box
03-Mar-2025A new week starts today, but it's been a long time since we had rain, and it's coming down quite heavily. Acc...
Hiroyuki Oka
My works 
My works Aruki of 3-sun cube puzzle box
28-Feb-2025Today is the last day of February. Compared to usual, the number of puzzle boxes I produced this month might ...
My works 27-step cube puzzle box
27-Feb-2025Today, while applying the final coat of paint to the 5-sun 27-steps puzzle boxes, I also worked on the produc...
My works Material of 3-sun cube puzzle box
26-Feb-2025I was out for about half the day today, so I wasn’t in my workshop. After returning, I did a bit of work. Con...
My works New 3-sun Cube box
25-Feb-2025It was another cold morning today. Last night, I went to buy kerosene for heating, and the gas station attend...
My works Kannuki (slide keys) panels
24-Feb-2025Today is Monday, but it is a holiday in Japan. It is a national holiday, celebrating the Emperor’s Birthday. ...
My works 27-step puzzle box / Aruki panels
21-Feb-2025Today, I worked on the Aruki (moving panels) production of the 5-sun 27-step puzzle box while also doing the ...
My works 5-sun 27-step puzzle box
20-Feb-2025Today, I first worked on the finishing and base coating of the 4-sun 27-steps puzzle box. This includes a sma...
My works Yosegi-sheet
19-Feb-2025I was out for a while today, so my work was somewhat limited. First, I continued from yesterday and attached ...
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...