| 摘要 |
PROBLEM TO BE SOLVED: To produce an eggshell that is a resin eggshell having an egg shape is not only divided into two portions but also broken randomly as if a bird's eggshell is broken by tapping the eggshell on an object, and formed of resin.SOLUTION: A resin eggshell has an egg shape. To break the resin eggshell randomly as if a bird's egg shell is broken, arcs are drawn on a concave side or a convex side on the resin eggshell by using a cutting tool such as a router and the resin eggshell is engraved with grooves to guide a direction for breaking. Thus, a shell egg broken randomly and imitating a bird's egg can be produced. |
