Acceptance tests 3Е642.SP1
Today, acceptance testing of the universal-grinding model 3Е642.СП1, which differs from the basic model by the increased stroke of the column, passed.
In the course of the work a successful sharpening of the special broach was carried out to process the end slotted grooves. The passage was fixed in the modified adaptation VZ-318.P16. Sharpening was performed by the end face of the cup during its reciprocal movement parallel to the cutting edge