The grinder must
The technological process provides for the removal of an obsolete coating in several techniques, gradually moving from large grain to smaller.
As a rule, at the first stage, sandpaper P36 is used and the P60 or P80 is completed.The process itself must be done at an angle of 45 degrees to the parquet plates, and in two directions: after primary processing, the grinder must be expanded by 90 degrees, and the procedure is repeated.