Changed stone number & Made stones round.

HHoning stones are rounded by using a special jig.
So they fit workpiece bore, and achieve good grinding quality
from the first.
*GC stones need pre-processing with some workpieces.
It takes time. And GC stones are needed to replace frequently.

Improved tool life dramatically.

Our honing stones achieved 67times longer tool life, and reduced replacement frequency.

About our honing head

Tool life improves dramatically with our honing head
due to no contact on the surface of workpiece directly.
Lubrication improves because of enough space
between workpiece and our honing head.
So scratch and heat generation problem that relate to
chips build up of honing stones improve.
*A honing head with one stone touches the workpiece,
so it wears off easily. It tends to have troubles.
It need to be replaced to keep grinding quality.