Factory Timber Storage
Logs of Kiso Hinoki, Sawara, Kouyamaki, among other, which are grown in the Kiso Valley.
We will introduce the production method of wooden bathtubs and open-air baths in the following section.
uces A skilled artisan prodthem one by one with all his heart.
Factory Timber Storage
Logs of Kiso Hinoki, Sawara, Kouyamaki, among other, which are grown in the Kiso Valley.
A precious natural tree that is anywhere from 150 to 300 years old.
Lumber used carefully, each log handled with care to ensure that there is no waste.
Lumber wood plates piled with little pockets of space between them so that wind passes through, drying them naturally.
Cut down to the required dimensions and remove defects.
Cut carefully a little larger than the required size by the machine to ensure that there is no waste.
We finish off the necessary parts while paying attention to the frontside and backside of the wood, so as to ensure that we sharpen with the grain.
Complete planks of wood which have been carefully be cut a little larger than required.
In order to make the moisture level of the wood level, we dry them off. This is necessary to prevent any errors or deviations.
Grafting dried material onto a plank.
This is a special grafting method called ‘finger joint’.
A strong grafting method using water-resistant adhesives.
After finishing off the surface, we will process the parts.
Mortise and tenon joint
To ensure that the finished product is water proof, not even a 1mm error can be tolerated.
Careful assembly while checking the firmness of the mortise and tenon joint.
Assembly
Careful assembly while checking the firmness of the mortise and tenon joint.
Fastened firmly with stainless steel nail hardware.
We hide the nail head with a copper nail cover.
Then, we attach the bottom plate with an adhesive, packaging, nails and screws.
We then chamfer and affix the various sides to end with a finished product.
This is a complete box bath.
A variety of wooden baths can be produced.
We adjust the angle while shaving planks one by one. This is the most difficult process as is relies on the artisan's intuition.
We round out the inside and the outside of the board with a plane
We then assemble parts using dowel and water-resistant adhesives.
Using the slant of the tub, we crimp the parts.
Using a hand plane, we cut roughly, and then finish the cutting process by smoothing the surface.
We use a plane on the inside and outside surfaces until it's perfectly smooth.
We then make a hoop that fits the dimensions of the tub and tighten the hoop firmly.
Then, we make a groove to fit the bottom plate.
We adjust it many times until it becomes the perfect size and embed the bottom plate.
Cut the base of the bottom of the bathtub and trim the shape. This makes a stylish Hinoki Bath.
We then chamfer and complete the final polishing.
This completes the barrel bath.