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Client d'
Reviewed in Canada on March 6, 2025
Bon
BJW
Reviewed in the United States on February 20, 2025
Ordered wrong, but kept for future use maybe. Looks well built.
Customer
Reviewed in the United States on November 27, 2024
Exactly the tool I needed for extended reach. No faults.
Jean-Marcel Duval
Reviewed in Canada on November 12, 2024
Le produit fait le travail. Mais, il faut serré les visses à nouveau de temps en temps
Michael Troitino
Reviewed in the United States on October 8, 2024
Nice extension with Allen screws to hold bit in place .
Randy Robinson
Reviewed in the United States on October 31, 2024
Great in my shop
Sue
Reviewed in the United States on October 3, 2024
The bot holder end it 1/2" round - not Hex which is just what I wanted. I have a 3" Forstner bit I need to drill through a 10" beam and the bit has a 1/2" round base so this is just what I need. The bit extender base is a hex that you chuck into a 1/2 drill. I am happy with the purchase.
S. Roe
Reviewed in the United States on September 27, 2023
I bought the 12" extension with 1/2" hex to 3/8" shank. It is very heavy duty. It works with my Irwin Forstner Bits.The round 3/8" shank of the Forstner Bits fits extremely snug. I had to put the face of the bit on a piece of wood and hit the extension with a dead blow hammer to get it to seat fully. I could've lightly sanded the Forstner bit shank to make it easier to insert but I figured using the hammer would be quicker.I did not grind a flat spot on the Forstner bit shank for the set screws like other reviewers said that they did. I just tightened them and it held fine.I used a 2" Forstner bit with the extension to drill a vertical hole in the center of a large stump and a 2nd horizontal hole from the side that connects to the bottom of the vertical hole. I pre-drilled the holes with a 3/8"x17" auger bit before using the Forstner bit.I'm going to burn the stump by starting a fire in the vertical hole and use a leaf blower in the horizontal hole.
Heidi N
Reviewed in Canada on July 21, 2023
Excellent attachment for hard to reach places. Saved us drilling holes for a pipe through shelves.
LaLa67
Reviewed in the United States on April 25, 2022
This extension bit was badly milled. There was a tiny bur/bead of metal inside between the 2 set screw holes that wouldn't allow my 3/8" shank to seat all the way past both set screws. In my attached pic, you can see the bead on the inside. As best I could tell, it wrapped about halfway around inside. I called Century Tools and they said it was likely a milling/manufacturing error and to just return it to where I bought it. Well, kudos to them for at least answering the phone and talking to me but one star for their quality control. I searched around a bit for other options and it became clear that the 12" extension/3/8" shaft wasn't easy to find and I specifically had to have this for a project. Like another poster, I have a drill press and cobalt (metal drilling) bits so I squared everything up and drilled the bead out myself - but I shouldn't have had to do this. It works great now and the shank of my bit sits down past both set screws securely. If this extension bit is your only option just be prepared in the event you might need to do your own fix.
DaveN
Reviewed in Canada on June 4, 2021
One of the two Allen key bit tighteners was not manufactured correctly. It's not deep enough for the Allen key to tighten correctly. As a result the unit must be handled with care as the bit will most likely come loose. Tried to find a replacement screw tightener, but so far no luck. I would ask for a replacement tightener, but I can't find how to contact the company.*** UPDATE: I was able to contact Century Tools directly and requested they send me a Allen key bolt tightener. They did one better, they sent me a whole new unit and it works great. I will buy more items from Century in the future.
Robert Leger
Reviewed in Canada on July 23, 2020
Purchased three and one of the 12" the extension was not bored properly, did not bother sending it back, if needed will bring to a machine shop and have it bored properly.
wwspier
Reviewed in the United States on June 24, 2018
Four stars because does not work without a modification. I was worried when I read the other bad reviews, but I had no other alternative for the task at hand. So I bought this extender, and rather than risk the drill bit spinning around in the extender because the set screws would probably not secure the bit under the punishing drilling I was about to do, I decided to modify my bit. I flattened the 2-1/4" Forstner bit shank in the two spots the set screws would touch in the hopes that so doing would keep it secure. It worked! I drilled a hardwood, 3-1/2" log, 12" down the center - that's along/with the grain - not across the grain. The first 3 to 4 inches I did without the extender, but I had to use the extender to make the turn/follow the bend, and that alone took a half hour to go the last 8-9" after the bend. Flattening the shank for the set screws like I did, held just fine. P.s. The drill bit metal was so hard, a hand mill file did nothing to it, so I got out the Dremel with a chainsaw sharpening grinder attachment, and that did the job handily (and the bit still works just fine in a chuck). See the photos...
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