BATHROOM SINK BASIN Q & A

What drill bit should I use to go through a ceramic sink?
I need to re-fit the bathroom sink to the wall at home. Unforntunately the cowboy builders who originally did it have drilled a hole thats too big for the original fixings. I have been able to pick up some 10mm basin fixers, which fit the wall perfectly. Unfortunately, their 2mm wide for the pre-drilled holes in the basin. Is it possible to drill these holes out a bit bigger or am I going to cause irrepairable damage? If it is possible, what drill bit should I be using? Is there a technique I should use?? Other than very slow! Thanks
Yes there are drill bits that will do the job,BUT, I’m not going to tell you their names.
CHANGE the wall’s holes.
Three ways to fix problem
1- Get some good glue and some wooden dowels. Drill out the existing holes and fill with the glue and dowels. Then after it’s set, redrill the holes in the proper places.
2- Just redrill the holes a little higher or lower.
3- find step bolts eg 10 mm on one end and 8mm on the other end
You can as I said drill the sink, but that will take the built in strenght out of the hole, and that means the sink ending up on the floor in a thousand pieces.
Change the wall
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