Material is wood chip. The required grindstone is a conical shape and the tip needs 0.5 mm.
On 2017-08-10 11:10:39
A conical shape with a tip 0.5 mm 0.8 mm in particular is used. Two items purchased separately were broken after 5 minutes because the inside was a hollow. Cutting capacity of set purchased items is unsatisfactory. The price is about 3000 yen per one. I would like to purchase the best thing with the ability. It would be appreciated if we could offer wear and diamond not to be peeled off by heat of fracture or friction.