Rated 3.3 out of 5 by 40
Rated 5.0 out of 5.0 by Eddie Ryobi vs Bosch Glass & Tile Drill Bits, Ryobi Faster
I wanted to drill holes in some ceramic flower pots, and my multipurpose drill bits could not get the job done. On February 8, 2015, I bought a 1/2 inch Bosch “Glass & Tile” drill bit and a 4-piece set of Ryobi “Glass and Tile” drill bits ranging from 1/8 inch to 5/16 inch. I started with the smaller Ryobi bits and they zipped right through the first ceramic pot. I used the Bosch drill bit to enlarge the holes, and it seemed to take much longer. I then tested each drill bit to see how long it took to get through another ceramic pot. The 2nd pot had a glazed bottom and took longer. The times to drill through the 2nd Ceramic Pot:
Ryobi 1/8 inch bit: 40 seconds. Ryobi 3/16 inch bit: 50 seconds
Ryobi 1/4 inch bit: 65 seconds Ryobi 5/16 inch bit: 70 seconds
Bosch 1/2 inch bit: 170 seconds
I then used a terracotta pot with 4 sides. Each of the Ryobi bits drilled through the pot in 5 seconds or less. The Bosch 1/2 inch bit took 35 seconds to drill through the pot.
Both brands got the job done, but all the Ryobi bits did it in such a small fraction of the time it took Bosch, that I have to believe their better performance is related more to their design than to the larger size of that particular Bosch item. I know the drill bit brands would need to be the same sizes for an objective comparison, but I am going to try some other brands of 1/2 inch drill bits for glass and tile before I buy another Bosch. I would buy a Ryobi 1/2 inch drill bit for glass and tile if they made one.
February 23, 2015
Rated 5.0 out of 5.0 by Frank437 Great
They work great. I have had no problems with them. I used it to make holes on a few Absolut bottles.
July 24, 2012
Rated 5.0 out of 5.0 by FJ40dman worked great
Installing grab bars in tiled bathtub. This did a perfect job. Predrilled with smallest drill first then drilled with the largest. Holes came out perfect. Helpful hint - put masking tape where you plan to drill, this will keep the drill tip from walking since you can't use a center punch.
January 15, 2012
Rated 5.0 out of 5.0 by BobTheBuilder Great Bits - when used properly
Cut numerous accurate clean holes in ceramic, porcelain and standard glass/mirrors (NOT safety glass) and still going quick and clean. Suspect the negative reviews are based on running the bits way to fast and overheating them. Run these bits SLOW.
May 27, 2012
Rated 1.0 out of 5.0 by TxRzrBk Don't use on porcelian
Followed directions, ran drill on slowest speed using light steady pressure. Took 15 minutes to get almost through the first hole then the end of the bit snapped off in the hole. I know other reviewers had sucess with these on porcelian but I suspect some porcelian is harder than others. If you need to drill porcelian save yourself a ton of effort and frustration and get a diamond bit.
December 27, 2014
Rated 1.0 out of 5.0 by BobF Not strong enough
First bit broke after less than 15 seconds of use. Returned product for full refund.
July 1, 2014
Rated 2.0 out of 5.0 by 2002 Good for 1 or 2 holes at best
I used these for drilling holes in a ceramic baking stone, about 3/8" thick. Performance fell off noticeably after the first hole. I used a drill press at 680 RPM, cooled the bit with water, and went slowly.
If you need one hole drilled, this will do the job. More than that, look for a higher-grade bit.
May 22, 2014
Rated 1.0 out of 5.0 by Jaime Lasted 1 hole
Bought this set and the Bosch set. I used 2 of the drill bits to get 1 and 1/4 hole done in my tile.
Yes, I did go veeery slow and careful. the metal just got chewed up.
I used the Bosch set to finish up. I need to make 2 more holes in the future so we'll see if the Bosch are any better
November 21, 2014