About lever handles






I've built a lot of architecture.All of them are handmade to order.
But there was one thing that always bothered me.It was homogeneous and expressionless readymade hardware.
Among them, lever handles are the hardware that we touch the most.
So I decided to start making them at first. 
I wanted to make something that felt more like the warmth of human hands.Something that we can feel the goodness of natural materials.
I wanted to make something that would change as it was used and that I would become attached to.It was with this in mind that I started making this lever handle.











Nowadays, we rarely have the opportunity to experience natural materials firsthand in our daily lives.
Most of them are coated or made of plastic or other chemical products.
I have created an architecture that allows us to feel nature with our five senses.
Hardware is one of the ways to achieve this.
That is why I always place importance on the nature and reality of the materials.






Iron persimmon astringent grilled, flaxseed oil finish

The iron material before processing is covered with an oxide film called black skin. It is a film that protects itself from oxidation by combining with oxygen in the air when the iron is melted by high heat that cools and hardens.



Brass  Aging treatment with room temperature black dye

If nothing is applied to brass, it will naturally oxidize and gradually change from golden to brown. The process can be freely controlled with a normal temperature black dye. However, it does not dare to stop its oxidation. This is because brass is a material that enjoys its aging. I have three finishes available at the time of sale plain, natural, and brown, but none of them can be finished in exactly the same color. That is the goodness of natural materials.













Don't tolerate insincerity work.
Because the atmosphere of the product will be come from the crafTsman's sincerity.







Mr. Kumamoto is a veteran ironworker with a career spanning over 40 years. He is an iron specialist who makes everything from precision parts to machine tools and construction. However, the real value of his work lies in the INVISIBLE part. Without his exceptional ability to get the best out of the smallest components, the "U" brand of hardware would never have been created.