Cutting a tap hole in a granite sink

[Adam75]

Hi

Does anyone know if a hinge cutter drill bit will cut out a semi-drilled tap hole on a Franke granite (resin) sink?

I know you can knock the whole out but I’m a bit nervous with that approach just in case it causes damage to the sink.

Thanks
Adam

 

[kevplumb]

hit it

its made to break out

 

[bathstyle]

Diamond coated hole saw, B+Q , topps tiles sell 'em

 

[Adam75]

The instructions recommend not to hit the hole out but to use a diamond edge 35mm hole saw!

I was hoping I could use the 35mm hinge cutter but worried it might splinter the top surface

 

[Corgigrouch]

A normal hole saw probably would do the job but it would be no good after you have used it... Follow bathstyles advise...

 

[Mark Elvin]

My Frankes sink has weak points, supposed to biff them out with a hammer & punch, but I'm nervous about doing it, so I'm probably going to Dremmel them out.

 

[bathstyle]

I have a Hansgrohe Tap in my Bathroom, the instructions say to use an allen key to remove the lever, so I'm gonna see if a small flat edge screwdriver will fit, if I knock it in with a Hammer

 

[kevplumb]

probably will

bit rough tho even for you