He is understood to have accumulated knowledge by self-education such as by visiting places throughout Japan to see directly wind-up dolls and devoted himself to restore wind-up dolls which had been hoarded up in various places; however, he sometimes 'repaired' wind-up dolls to change the original model, which, it is said, has made him not necessarily highly evaluated by wind-up doll researchers.
全国のからくり人形を直接見て回るなど独学で知識を積み上げ、各地で死蔵されていたからくりの復元に尽したとされるが、その一方で元々と違う形で「修復」することがあり、からくりの研究家などからの評価は高くないとも言われる。