Simplify the following text for a Grade 4 native English-speaking person.
Original: A K6 can have up to 18 engraving heads each cutting 8,000 cells per second to an accuracy of 0.1 Â m and below .
Simplified: A K6 can have up to 18 engraving heads each cutting 8.000 cells per second to an accuracy of .1 Â m and below .