I used a carbide tip to drill a hole to my ceramic tile to install a grab bar in the shower stall (finally!). Left the carbide drill bit to cool for for a few hours before I used an old toothbrush to brush off the debris from the tip under tap water then wiped it dry with a towel.

Do I need to grease it before storing it?

  • When I used it on ceramic I start slow and gradually sped it up. Hopefully it will still have a long useful life ahead.
    – punsoca
    Mar 26 at 2:06
  • I hate to break your heart, but drill bits that get used rarely have a long life. Mar 26 at 21:18

1 Answer 1


use a lot of lubricant (water) while drilling that will prolong they life

Otherwise they will overheat the tip (red hot) and ruin the carbide tips, that is why you must cool it during drilling so they only get mildly warm.

After that to prevent rusting you can apply some grease

  • When you eventually need to sharpen them, diamond sharpening stones/paddles will do the job.
    – keshlam
    Apr 25 at 5:13
  • @keshlam that is correct
    – Ruskes
    Apr 25 at 6:20

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