珈琲豆を挽く専用石臼です。珈琲以外の抹茶・蕎麦などは挽けません。
珈琲石臼の特徴を説明します
1）必要な量の珈琲豆を簡単に挽ける
2）挽く時の音が電動ミルの「ガー」と言ったうるさい音ではなく、珈琲豆の割れる心地よい音とその感覚がハンドルを持つ手に伝わります。
3）珈琲豆を挽くたびに珈琲の香りが空間に広がります
4）粗挽きから細挽き・エスプレッソ用まで、一回転に入れる豆の量で調整出来ます
最初は難しいですが、稽古をして下さい。
5）石を重ねただけの単純な構造のため永久に故障しません、数十年単位でメンテナンス無しで使用出来ます。（内部の目立ては摩耗しない工夫がしてあります）
6）下臼には挽けた粉が外部に飛び散らないような加工をしてあります。
7）普通の珈琲石臼は粉を挽き終わったあと上臼を外して見ると下臼の上に挽きかけの粉が大量に残っているのが分かりますが、私の石臼はほとんど残らないよう上臼の目立てが特殊になっています。（写真でお見せする事は出来ませんが）
全体の重量は約22Kgで幅は約25cm高さは約24cm、5種類のデザインがありますが大きさと重さは全部同じです。
この大きさと重さに関しては珈琲豆を安定して挽く最小の条件で決定しているので
中には「もう少し小さいサイズで」と注文されるお客様がおられますが、変更は出来ない事を説明してこのサイズで製作しています。
下臼の「摩耗しない目立て」と粉が周囲に飛び散らないように粉を挽く面を外周より約8ｍｍ下げてあります。この面を正確に下げる加工は石屋の職人には分かると思いますが、難しい加工です。
さらに外周の粉を受け止める溝も正確に同じ深さでの加工と磨きが出来るのは私だけだと思います。
This is a stone mill specifically designed for grinding coffee beans.
It is not suitable for grinding matcha, soba, or any other materials.
Here are the features of the Coffee Stone Mill:
Easy to use – You can grind just the amount of coffee beans you need with ease.
Pleasant sound and feel – Unlike electric grinders that make loud “grinding” noises, this stone mill produces a soothing cracking sound as the beans break, and that satisfying sensation is transferred to your hand through the handle.
Aromatic experience – Every time you grind, the rich aroma of coffee fills the air.
Adjustable grind size – You can control the coarseness, from coarse to fine and even espresso grind, by adjusting the amount of beans per rotation.
It may be a little difficult at first, but with practice, you’ll master it.
Extremely durable – Its simple structure of just two stacked stones means there is almost no chance of failure. It can be used for decades without maintenance. (The grinding grooves are designed to resist wear.)
No mess – The lower millstone is specially processed to prevent ground coffee from scattering outside.
Efficient grinding – With most conventional coffee stone mills, a large amount of half-ground coffee remains on the lower stone after use.
However, my stone mill is designed with a unique groove pattern on the upper stone that leaves almost no residue. (Unfortunately, I cannot show the design in photos.)
The total weight is about 22 kg, and the dimensions are approximately 25 cm wide and 24 cm tall.
There are five different design styles, but all have the same size and weight.
As for the size and weight – these are the minimum requirements to grind coffee beans consistently and stably.
Some customers request a “smaller version,” but I explain that this is not possible, and I produce them only in this standard size.
The lower millstone features wear-resistant grooves, and the grinding surface is lowered by approximately 8 mm from the outer rim to prevent ground coffee from scattering.
Craftsmen in the stoneworking field would understand the importance of this design, but precisely lowering this surface is a highly challenging process.
Furthermore, I believe I am the only one who can accurately carve and polish the outer groove—which catches the coffee grounds—at exactly the same depth with such precision.
