1.The material bought the square lumber (30*30*1820L) of the plain wood and two boards (30*9*1820L) at Woodshop respectively.I had a lot of square lumber of the broadleaf tree. But,I thought that it didn't suit a building block because the broadleaf tree was hard.

2.It cuts each material using slide saw. The face is clean when using it.

3.I removes a burr in the section corner in sandpaper. I continues to polish a block earnestly.

4.The finish, I used and polished sander-jig of the woodcraft lathe.

5.I made three kinds of types. Positive cube of 30mm. Trapezoid. Board of 120mm in length.If six pieces are combined, it becomes an arch because the vicinity has inclined at the trapezoid by 15 degrees. It becomes a circle 12 pieces.

6.The container became full of building block.

My grandchildren seem not to understand how to play yet. However, it seems to be happy. I think that the block is
better of the toy made of plastic where the electronic sound that they have resounds.