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Featuring diamond-welded tips for long life and extreme durability, DEWALT Tile Drill Bits power through dense tile, solid-body porcelain, and more. Reverse-spiral threads in the drill bit set enable continuous water cooling for quick, clean drilling. Core ejection slots remove plugs for repeated cuts.
From the Manufacturer
DEWALT DW5574 Heavy Duty 5/16-Inch Diamond Drill Bit
Guy O.
Reviewed in Canada on December 10, 2022
Efficace. Utiliser selon les instructions. Humidifier et ne pas chauffer la mèche. Efficace pour la tuile même commerciale très dure.
John
Reviewed in Canada on September 10, 2021
Worked perfectly to drill 2 holes on a porcelain tile attached to the wall. Super happy with results. But only 2 holes so don't know how many you can do.Very important : the instructions call for a variable speed rechargeable drill. I had to rent one. This should be mentioned in the description.
Damian
Reviewed in the United States on April 26, 2021
It did the job but lasted only for drilling of 1 hole through a porcelain tile. I thought for $16 it would at least allow me finish drilling the 4 holes I needed to install a shower door. But all the diamonds were gone after drilling 1 hole and left me basically just a metal rod grinding against the tile.
BML
Reviewed in the United States on March 25, 2020
I recently built a new home and the tile we used was really hard. I tried using a standard tile bit to drill holes for my shower door and only finished one and a half holes before the bit was spent. I ended up using the bad bit to make a starter hole for this bit and it worked great. It was much quicker than the normal bit as well and still looks new. I bet it will work for my second shower. This is the first time I used a bit like this, but man am I a believer. I will keep one of these around from now on. I am a part-time contractor as well. For the price and durability you cannot go wrong.
Ken
Reviewed in the United States on August 28, 2019
Didn't last long. After 2 holes it was finished. Had to run to the store to get a replacement, Bought a Milwaukee bit and finished all six holes with no problem
Cecilia P.
Reviewed in the United States on May 6, 2019
I used this to drill 4 holes on porcelain tiles, and it works as expected. But do not expect it not to slip on the tile when you first started drilling. For myself, I confined the bit using a square hole that I made with thick layers of tapes.
gplevca
Reviewed in Canada on March 4, 2019
I got this as a back up and it out performed the other bit I bought at Home Depot. I needed to drill 10 holes in a very expensive porcelain tile and it did a great job! I used it on low speed and kept spraying water on it, also looks like I can do another 10 holes. Stay away from the cheap bits!
Webberite
Reviewed in the United States on April 26, 2019
Diamond drills get a bad rap for wearing out quickly. I just finished drilling 24 holes in porcelain tile and the bit appears to have plenty of life left. Trick is to drill very slowly--couple hundred RPMs max, light pressure, and use LOTS of water w/a little soap in it for added lube.
MW630
Reviewed in the United States on November 8, 2016
Used this drill bit by the instructions and it still burned out after 3 holes. I ultimately wanted to make 4, but 3 was sufficient. If you need to make multiple holes, save yourself the frustration and buy more than one bit. Trust me, no matter how careful you are, this will burn out quickly.
Lulu in TX
Reviewed in the United States on May 2, 2014
I recommend this diamond drill bit for anyone who works with glass. It cut a precise hold in thick fused glass with no problem, and is still good for many more drilling projects.
Kevin J.
Reviewed in the United States on March 9, 2013
Great for drilling fine china and porcelain plates -- just make sure you keep the drill bit cool with LOTS of water!! Also use a very slow speed (~500rpm) and light pressure, let the drill bit do the work -- DON'T FORCE these through the plate. Also use masking tape on the back side of the plate to avoid chipping or a "punch-through" larger hole on the backside. I found that drilling a hole through a plate to take about 15-30 minutes depending on the thickness and how hard the particular china or porcelain is. GO SLOW and LET THE DRILL BIT DO ALL OF THE WORK.
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