Slate tiles for window sill - how to cut & how to seal t

[DIYNotIan]

Hi all

I have some slate tiles I am hoping to use for my kitchen window sill. They are around 8mm thick.

*****CUTTING
My dad has lent me a beefy angle grinder to use. The blade he has given me is a Norton Expert C30R - BF41. Very similar to this (which is a "42" rather than "41" - not sure of the difference but it look s similar):

http://www.ebay.co.uk/itm/NORTON-EX...Home_Garden_PowerTools_SM&hash=item48468e3011

Will that do the job or should I get a different blade, and if so what?

Any tips when it comes to cutting? Should the tile me face down or up? Things like that.....

*****SEALING
Is sealing the tiles essential? We like the matt finish and the colour of the tiles as they are now. If we did not seal them, would they soon look awful and would they be impossible to clean if not sealed?


One other thing, I was going to lay them onto mortar. Does that plan sound ok?

Many thanks

Max

 

[Burnerman]

C 30 is the grit size, the BF number relates to a depressed centre or flat wheel type (if I remember correctly).
Either one will suit you.
Its a pretty small grinder, this one so cut carefully and slowly.
Cut from the face side downwards, and its best to cut almost the whole way through.....use water to reduce the dust but remember water and electricity don't get on too well.
I'll leave the slate sealing to others with more knowledge.
John

 

[DIYNotIan]

I read somewhere that diamond blades should be used. Is that what I have here or do i have something else? If the latter, should I look to get a diamond blade and any recommendations if so?

Thanks for the help...

 

[Burnerman]

A diamond blade will cut cleanly and last longer, but isnt really necessary for slate......obviously they are much more expensive.
Personally I wouldn't bother in your case.
John