What drill bit for drilling 6mm holes through hard porcelain tiles?

I’ve managed to burn out this – https://www.screwfix.com/p/erbauer-diamond-tile-drill-bit-6-x-67mm/51908

I Burned it out doing exactly what the sales pitch states it could handle…

Please could I have recommendations for a better replacement?

Is this one any better? –
https://www.amazon.co.uk/Industrial-Diamond-Tech-Holesaw-6-5mm/dp/B079DF7139

Thanks in advance

Dave.

I’ve been using a basic tungsten tipped bit “for ceramic” for years. Lots of water, not too fast and it goes through.

I’ve used something like this in the past. Generally only for a couple of holes for sinks or towel rails.

https://www.screwfix.com/p/bosch-expert-tile-drill-bit-6mm/59438

I know these worked on our ceramic tiles…
https://www.screwfix.com/p/glass-drill-bit-set-4-pcs/1598v

Masonry bit, some water. Slow and steady.

I always start off with a normal masonary bit with a cup of water to cool it in, if that doesn’t make immediate headway then a cheaper version of that JCB diamond bit does it.

Diamond bit, patience and lots of water. Pushing too hard knackers them. I’d be amazed if a masonry bit would get through porcelain tiles.

They still won’t do many holes before wearing out though.

What I don’t understand about the instructions on those diamond bits is that they say to use without water, diamond encrusted bits always cut better, stay cleaner and last longer with water.

i assume if it says no water it will be one of the wax filled ones. when i’ve tried them they don’t seem any better than normal diamond bits and just keep dipping it in water to keep it cool.
the trick is to keep the speed low or they burn out really quickly. i just use my cordless on low speed.

Stop dicking about with masonry bits they’re for stone, use glass drill bits (available from Screwfix) and the jobs a doddle. As per Chipster.

Mould a ‘pool’ of Plasticene/bluetak etc round the whole to be drilled and fill it with water so the bit is constantly in water rather getting too hot then being dipped.

I’ve always used the arrow shaped ones for tiles and glass, never had any issues.

Patience is the thing you need when drilling porcelain tiles.

We sometimes spend a day drilling them if there are a lot of holes, especially if there are waste pipes to go through them.

Pointed bit to make a start and help prevent slipping then a good diamond bit, but slow and keep it cool as others have said.

I’ve had success with an ordinary masonry bit, sticking some masking tape over the place to be drilled (so you drill through the tape). Tape helps to stop the drill bit skidding, and stops the tile chipping.
As above, slowly and carefully…

anyone saying masonary bits or glass/tile bits have never tried drilling hard porcelain tiles, they don’t work.

like “Bear” says above you need patience, it can be a long job. worst ones i ever did where some 70mm holes for some downlights.

I’ve got that Erbauer one you link to op. I found it worked well actually, but defo keep the speed low and pull out now and again to help clear the hole. It doesn’t clear like a regular twist bit.

As someone who spends a large amount of time drilling holes in hard tiles, these are the best I’ve found https://www.rubi.com/en/dry-cutting-diamond-drill-bits-f19 I use them on a grinder but a drill attachment is also available.

Masonry bits are the wrong tool for the job. They’re not sharp and are designed to be used wit a hammer action which breaks up the masonry and clears out the stuff. The arrow shaped bits are the correct tool for the job for small holes and work really well. I’ve used them loads of times. No need for tape or anything as the sharp tip immediately starts cutting and you wont get wander..maybe a few manual turns of the chuck just to get the tip digging in before you apply power then drill on slow speed. They just cut through and leave a nice neat circular hole.

They’re also cheap so why not just buy the right tool for the job instead of trying to make something not designed for the job work at the risk of it going wrong and cracking the tile or slipping off and scratching the surface.

Thanks all. Got it replaced with the same one at Screwfix for nothing. Slow drill, cup of water and patience seems to be working so far. Thanks again