CESSCO Inc RPM s for Diamond Core Bits
2022 2 21 nbsp 0183 32 CORE BIT SPEED RECOMMENDATIONS RPM If the drilling speed is too high the bit will polish If the drilling speed is too low the job will take too long You will know if the core bit is quot polished quot or quot glazed quot when it stops cutting you have segments left and you don t see exposed diamonds To open up the diamonds on the core bit try