My works 4-sun 18-step puzzle box – frame parts
21-Jan-2025I only had time to work in the morning today, but I focused on creating and assembling the frame for the 4-su...
Hiroyuki Oka
My works 
My works 4-sun 18-step Japanese puzzle box
20-Jan-2025Today, I’ve started a new production process for 4-sun 18-step Japanese puzzle boxes. I plan to produce about...
My works 2-sun Cube puzzle box unique design
17-Jan-2025Today, I worked on both tasks I mentioned yesterday. For the 4-sun double-compartment puzzle box, I focused o...
My works 2-sun Cube puzzle box
16-Jan-2025I had some errands to run today, so I was out for a bit, but I managed to make progress on a few tasks. Work ...
My works Double compartment mechanism
15-Jan-2025This morning, I only worked for a short time. However, I managed to assemble the frame parts of the 4-sun dou...
My works Double compartment puzzle box
14-Jan-2025I started working on a new project today, the 4-sun double compartment puzzle box. I prepared the materials a...
My works Ichimatsu yosegi sheet
13-Jan-2025Today is a national holiday in Japan, and many workplaces are closed. Today’s holiday is “Coming of Age Day.”...
My works Drawer Japanese puzzle box
10-Jan-2025Today, I continued with the work from yesterday. First, I installed the final panel for the 5-sun drawer box,...
My works 5-sun drawer 10-step box (3)
09-Jan-2025Today, the wind was very strong, and the humidity dropped significantly, falling below 30%, which is rare in ...
My works 5-sun drawer 10-step box (2)
08-Jan-2025I continued the work from yesterday today. For the 5-sun drawer 10-step puzzle box, the assembly of the frame...