On Wed, 15 Apr 2020 11:43:33 -0700 (PDT), wrote:

When I attempt to drill in the kitchen, the tile will be vertical.
How will I keep it wet w/o creating a mess ?


Tape a trough beneath - draining into a pail -
have your capable assistant think Teri Garr in Young Frankenstein
apply a small stream of water as you drill.
If Teri Garr isn't available, devise your own gravity feed
water stream device ...
http://tinyurl.com/u6aqx9d

ps: do not under any circumstances do a google
image search for vintage enema.
.... you can't un-see certain things.
John T.