Customer Reviews and Photos for:
Self-Centering Bits
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Average Rating:
4.5
(13 customer reviews)
$14.99
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1) Submitted by
Joe, from Sutton, MA
on 12/4/2011
Customer Rating: 
This is one of those tools that you end up wishing you had gotten years ago. Along with the shelving jig, it will raise your level of precision and provide you with personal satisfaction in your projects. If you do happen to accidentally dismantle the spring loaded assembly like I did, the easiest way to put it back together is to assemble it without the spring first and lock down the set screw. Then remove the spring retaining spring clip which is at the front below the chip clearing holes, slide the brass washer, spring and stainless washer in that order over the assembly! compress these three parts with needle nose pliers and snap the spring clip back into position where the score mark is around the barrel. I found using a bench vise to hold the base of the bit while doing this is best.
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2) Submitted by
Scott Moskalik, from San Jose, CA
on 1/1/2011
Customer Rating:
These bits together with the shelf jig-it make drilling shelf pin holes a breeze. Word of caution however if you need to adjust the depth of the bit - do NOT unscrew the small inset screw more then necessary to loosen the bit. Removing the screw farther results in the entire spring loaded mechanism to fly apart. It can be put back together but takes some patience.
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3) Submitted by
T Bone, from Walkersville, MD
on 9/5/2010
Customer Rating: 
I wore out my first 5mm self-centering bit and bought a replacement. The newer bit doesn't leave a round dent around the hole and I found I get no tear out if I use maximum RPM setting on my drill. This is one of my favorite Rockler products.
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4) Submitted by
Brian Barton, from Philipsburg, PA
on 5/29/2010
Customer Rating:
I have owned and used this self centering bit and the shelf jig it for years and drilled thousands of holes with it and it works great and is a big timesaver.the problem with chip removal,if yoy drill your hole and then run the drill bit back into the hole a second time it clears the chips most of the time.Also a dull drill bit will clog more often and a corded drill that runs higher rpms works better than a slower cordless drill.
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5) Submitted by
Dr. Andy, from Brick, NJ
on 5/24/2010
Customer Rating:
The bit was awesome, and worked with the shelf pin jig-it jig brilliantly. Sometimes wood chips would build up in the spring mechanism but that was of no consequence. Well done Rockler.
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6) Submitted by
Tom, from Rosholt, SD
on 9/2/2009
Customer Rating:
I'm making a craftsman style book case divider and used the bit to put shelves in. Several years ago I purchased a jig from you not realizing a centering bit was needed! What a slick product the centering bit is!
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7) Submitted by
John W Barrett, from Oreland, PA
on 7/4/2009
Customer Rating:
I used this bit, along with a home made shelf pin jig, to build a couple of Shaker style bookcases. What a time saver. A really great tool.
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8) Submitted by
Scott Ewing, from Brandon, FL
on 3/17/2008
Customer Rating:
I used this bit to make shelf pin holes using your shelf pin jig. I made kitchen cabinets for my son. I plan to make another 30 linear feet of cabinets for the same project. I used the cabinet screws made on the same order to mount the cabinets. Both are excellent.
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9) Submitted by
John, from Mount Pleasant, SC
on 11/4/2009
Customer Rating:
Making some cabinets for a neighbor and had 240 shelf pin holes to drill. Your jig makes alignment simple with accurate indexing. The comments by others concerning chip clogging are correct, BUT I found that if you insert the bit into the jig, start the drill AND LET IT SPIN A FEW SECONDS BEFORE drilling the hole. Then let IT SPIN AGAIN AFTER completing the hole, the chip clearing problem was greatly reduced. Just can't be in a hurry!
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10) Submitted by
Rich Howard, from Glendora, NJ
on 4/14/2008
Customer Rating:
Used this and the 1/4" Self Centering bit on my electronics cabinet with the jig and they worked very well except that after a few holes the bit had to be cleared of debris after every two or three holes. The design should be worked on so the bit clears the debris.
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11) Submitted by
Dennis Niemczyk, from Chicago, IL
on 11/22/2008
Customer Rating:
I bought the 5mm version to add a few more shelf positions to some new cabinets. First I made a jig from a strip of 1/8" tempered hardboard by drilling a pair of properly spaced 5mm "locator" holes followed by several 3/8" guide holes. Using shelf pins to register the jig into the existing holes I then drilled the new pin holes with the bit and guide. The bit cut clean holes at the surface but did tend to clog up with shavings after only a couple of holes as per another reviewer's experience. If I had to drill a bunch of holes I would find that frequent clearing of the bit to be a problem. The design should be revised for better chip ejection. Other than that, the self-centering bit worked well.
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12) Submitted by
Frank Lavigne, from Franklin, NH
on 1/1/2010
Customer Rating:
This product work very good for the project I was working on. It had one minor flaw in that it the centering sleeve would not retract every time I drilled a hole. Chips would build up between the sleeve and drill preventing it from returning back to the centering position.
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13) Submitted by
Thomas Creeden, from Windber, PA
on 7/24/2008
Customer Rating:
The self centering drill bit is very nice. It can be used directly with the hardware as well as the Jig-It. It makes for much better fitting screws/hardware with no screw heads leaving an edge or lip. This is a keeper!
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