SHDIATOOL Dry Diamond Drill Core Bit Diameter 40mm Vacuum Brazed Drilling Porcelain Tile Granite Marble

As a bathroom fitter I drill various types of tile almost daily, I'm always on the lookout for diamond bits for drilling porcelain tiles that last reasonably well and don't cost the earth. While these 6mm bits worked quite well to start off, I only managed 3 holes with each bit before they were totally worn and useless. Cheaper bits I've used before have lasted longer, making these not very cost affective. Look elsewhere.

Looks good at first but after two uses cutting holes in porcelain tiles it went blunt. I used water whilst drilling to limit dust and keep cool but despite this on 3rd use it struggled to cut and i had to apply immense pressure and watched it start to glow before eventually it cut what ended up being a rubbish hole rather than neat and sharp. Alot of money spent for something that lasted a week!

Have used the Rubi make of this product and very happy with it, so bought this knowing it would be a risk as it is half the price - but have to say it's just as good as the Rubi! Brilliant to get through the hardest of tiles without having to use water to keep it cool, and lasts a good while too.

I was scepitcal at first as I have used cheap diamond bits without much success. I even tried a branded Makita 10mm bit which barely cut 3 holes in porcelain tiles before completely wearing down and becoming useless.Thought I would give these a go and after 3 holes, the first bit doesnt look likes its ground down at all... not even opened the second bit yet.Note there is a M14 shank which fits in a grinder. The speed of the grinder is no problem for the bit and it cuts porcelain within seconds. You still have the skidding problem, I made a V with timber to help hold the bit to get started and no problem.Suitably impressed for the money.

I've used diamond core drills in the past to do 8mm holes using a drill and each hole took ages to drill. Using this bit in an angle grinder was like a hot knife through butter by comparison. I had a large thick porcelain tile I needed to break out (see photos) the advice was rake out grout and then drill holes to make it easier to smash tile.Only challenge was starting the holes due to the bit tending to run around on the tile. So I used a piece of wood with a V notch taken out to rest the bit in. That did the job! Precision and speed/ I would use one of this bits the next time I need to make holes in a tile and abandon my previous bits.

20mm diamond core - I bought both this one and the Rubi Drygres for comparison - the Rubi being 2.5 x the cost.Having always used Rubi (I fit bathrooms and use mainly porcelain tiles), I wondered if they were really worth the money, well:THEY ARE!Drilling through a 10mm porcelain tile with bits on an angle griner - this one took at least 5 times longer.After one hole drilled, it already showed signs of wear - flattening/blunting of the diamond chips, whereas the Rubi still looked new.I haven't used it since but keep as a backup if I get desparate!I guess you do indeed get what you pay for - I will continue with Rubi going forward.

I didn't realize this was for an angle grinder when I ordered it. Spent ages try to find an arbor to fit it, looked it up again to see what I purchased to realize it was for an angle grinder. It is pretty fierce, we actually needed it for a composite sink so was a gentle as we could be. Worked with out issue luckily.

This product was just amazing. This was the third drill bit I purchased as the others were rubbish. First one was from Screwfix there own Erbauer brand Diamond Tile Drill bit laster two holes and the other was Armeg both last two holes each.However this bit cut 28 holes through 20mm porcelain patio tiles no problem. I’ve yet to do the other side but the drill bit doesn’t appear worn.Would highly recommend these to any one drilling through porcelain. Mines were for installing a glass balustrade. Made my life so much easier.