S
soupastar
Ok I am newbie here but have a question about the above which I hope is cool.
I am attaching a Juliette balcony to a loft dorma which is clad in rosemary red hard clay roof tiles. All the tiles are attached and are vertical.
I need to drill around 16 holes 8mm sometimes through double thickness tiles. I have so far managed to get through one of the overlapped tiles and in the process ruined two diamond tip drill bits. One was a pre oiled tip which you are not supposed to use over a 1,000 rpm it says it doesnt need cooling either but it was pretty useless. I dont want to crack the tiles but it has taken nearly 40 minutes just to get one hole. The other diamond drill bit has lost its coating even though I was constantly dipping into water to cool.
I was told by the fella who laid the tiles that he went through two £69 grinder blades when cutting them.
Any advice to what drill bit I should be using or what I could be doing wrong is appreciated.
I am attaching a Juliette balcony to a loft dorma which is clad in rosemary red hard clay roof tiles. All the tiles are attached and are vertical.
I need to drill around 16 holes 8mm sometimes through double thickness tiles. I have so far managed to get through one of the overlapped tiles and in the process ruined two diamond tip drill bits. One was a pre oiled tip which you are not supposed to use over a 1,000 rpm it says it doesnt need cooling either but it was pretty useless. I dont want to crack the tiles but it has taken nearly 40 minutes just to get one hole. The other diamond drill bit has lost its coating even though I was constantly dipping into water to cool.
I was told by the fella who laid the tiles that he went through two £69 grinder blades when cutting them.
Any advice to what drill bit I should be using or what I could be doing wrong is appreciated.