My works 3-sun Cube puzzle box
10-Mar-2025It has become warm again since yesterday. The mornings are still cold, but the daytime is much more comfortab...
Hiroyuki Oka
My works 
My works Finish coating
07-Mar-2025The rain from yesterday has stopped, and the sunshine has returned today. However, the temperature remains lo...
My works Assembly of Japanese puzzle box
06-Mar-2025The weather is still not good today, but the rain from yesterday has stopped, and the humidity was a bit lowe...
My works Aruki of hexagon puzzle box
05-Mar-2025This morning, it was raining again. However, the rain stopped later, and the humidity started to drop. So, I ...
My works Frame of hexagon puzzle box
04-Mar-2025Today was very cold again, and surprisingly, it started snowing in the evening. Because of this, all highways...
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...
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...