The reviews are automatic translation.
Drilling of flat bar of stainless steel
On 2015-06-16 15:30:41
As stated in the other person's writing, small diameter drilling of stainless steel is difficult. The precision of the drilling machine to be used · The cutting oil · the number of rotations will have a big influence. If you understand this it is a convincing product. I use it regularly.
S45c square hole piercing
On 2014-01-23 12:06:05
Because the diameter is small, when I drilled with desktop milling machine keeping the rotation at 1000 rpn, the place near the edge of the blade rather than the cutting edge brilliantly broke and broke. Even though I did not move fast. It was at least a salvation that the cutting edge did not remain because the hole was not so much open. This manufacturer believes that COSPA is good and uses various sizes, but was it a third-tier manufacturer to crush using it for the first time? I guess it is useless unless it is a top manufacturer.
For perforating holes for nuts
On 2013-02-20 17:48:26
Scheduled to purchase as needed for general drilling
Work to widen the pierced hole
On 2012-07-21 01:16:56
It is natural that 1 mm used by me is thin, but as soon as the sharpness of the tip got worse it broke.
Drilling in stainless steel pipe (wall thickness 1 mm)
On 2012-07-16 13:37:26
When drilling about five places, the cutting edge wears and the sharpness becomes dull. I think that it is suitable for the price, but it did not break, and when sharpening again a considerable number of holes could be made and the purpose could be reached.