hi folks!

i am testing a 14 mm cnc diamond finger just ordered from china (see photo).
intention is to build home made amorphic shapes cutting tool .



my router is up to 25k rpm (its rather used and might have little freedom on its spindle)


the glass is 8mm deeped in water tank (1 cm under water surface) and the finger approaches from side of horizontal sheet .which is clamped sofltly.


so far my problem is chipping.


i am not sure if its speed issue , pace issue , or maybe cooling (there is no water streaming - just underwater process )



can anyone tell where should i correct the test environment to get unchipped edges or reduce chipping sizes ?


thanks

Oded Samuel.