BullseyeBore Core is a patented power drill accessory that helps you always drill straight.
EARLY BIRDS SAVE UP TO 40%
Works with a wide variety of common commercial drill bits including some Standard, Hex Shank, Spade, Step, Masonry, and Auger bits.
USE YOUR OWN BITS
WORKS IN ANY
ORIENTATION
IT'S SAFE
TO USE
Rotation stops immediately when a hand or any other obstruction gets in the way.
ATTACHES AND DETACHES IN SECONDS
BullseyeBore Core utilizes a patent pending connection mechanism to quickly and firmly connect to your drill chuck.
CHOOSE THE MODEL THAT SUITS YOUR NEEDS
Bullseyebore Core is available in high visibility Green or longer battery life Red. As a general rule, if you plan to use BullseyeBore Core indoors and battery life is important to you, then Red is right for you.
On the other hand, if you want to drill in bright indoor conditions or indirect sunlight, then Green is the best option.
What's more, each color comes in a set of two:
Standard for bit lengths between 2” and 5”
Extended for bit lengths between 2” and 8”
The Extended version can also be used with specialty bits including some Spade, Augur, Step and Forstner bits.
The standard versions of BullseyeBore Core (CR1-100 and CG1-100) projects two beams on the work surface that produce circular patterns during drill rotation. The first beam is projected parallel to the drill bit. This projection is known as the Reference Beam, and this beam produces a circular Reference Pattern on the work surface while the drill is rotating. The Reference Pattern is generally circular and unchanging even if the drill is misaligned (tilted) with reference to a flat work surface.
The second beam is known as the Alignment Beam, and this produces a single Alignment Pattern on the work surface while the drill is rotating. Much like the Reference Pattern, the Alignment Pattern is essentially circular when the drill is aligned with a flat work surface, but unlike the Reference Pattern, the Alignment Pattern will distort into an elliptical shape when the drill is misaligned (tilted) with regards to a flat work surface.
HOW DOES BULLSEYEBORE CORE CONNECT TO THE DRILL CHUCK?
The BullseyeBore Core product connects directly to the “chuck face” through a unique patent pending magnetic connection. The “chuck face” is the forward-most portion that the drill bit goes into.
WILL BULLSEYEBORE CORE WORK WITH MY DRILL?
BullseyeBore Core and the accessories were designed with the goal of working with most common standard electric drills and drill chucks, but due to the vast number of drill and chuck combinations, some careful user testing is required prior to use. Always read and follow the BullseyeBore Core Safety Guidelines before attempting to use BullseyeBore Core or any BullseyeBore Core accessories on a drill or in an actual drilling operation.
As a general guide for drill compatibility, BullseyeBore Core will work with most common commercial electric drills that meet the following conditions:
1. The drill chuck face is metallic and flat. The “chuck face” is the very front of the chuck.
2. The drill chuck is a common keyed, keyless, or a standard ¼” hex shank chuck.
3. The drill chuck has a bit hole of less than or equal to 0.56" diameter.
4. The maximum drill RPM is equal to or less than 2500 RPM.
DOES BULLSEYEBORE CORE WORK ON CURVED WORKSURFACES?
Yes, BullseyeBore Core can be used for worksurface alignment on both flat and curved worksurfaces. In the case of constant curved worksurfaces, the Reference Pattern and Alignment Pattern or Patterns will be slightly elliptical in the direction of the constant curved worksurface but can still be compared to determine worksurface alignment versus misalignment.
WHAT ARE CHUCK ALIGNMENT GUIDES AND WHAT ARE THEY USED FOR?
BullseyeBore Core Standard Chuck Alignment Guides are an optional accessory in the BullseyeBore Core accessory ecosystem.
A single Standard Chuck Alignment Guide can be screwed onto the back of the BullseyeBore Core device over the label. Standard Chuck Alignment Guides are designed for two purposes:
First, they provide a means to consistently center BullseyeBore Core onto the flat chuck face during installation. This makes repeated installations onto the drill chuck face both easy and consistent.
Second, they help to prevent lateral displacement (sliding) of BullseyeBore Core across the flat chuck face. Lateral displacement can occur during initial drill rotation or high-speed rotation, but is most common during electric breaking (e.g., when your finger is removed from the drill trigger and the drill stops suddenly). Some power drills employ a strong electric breaking function that creates an abrupt stop to any drill rotation.
DO I NEED A CHUCK ALIGNMENT GUIDE?
Most standard 0.5” (1/2") keyed or keyless chucks do not require a Chuck Alignment Guide as there is a large enough flat metallic surface to magnetically hold BullseyeBore Core in place during drilling operations without the threat of lateral displacement (sliding across the flat chuck face). However, there are two cases where a Standard Chuck Alignment Guide can be very helpful:
First, if you plan to repeatedly mount and dismount BullseyeBore Core on your drill chuck, a Standard Chuck Alignment Guide can be helpful. The Standard Chuck Alignment Guide provides a means to consistently center BullseyeBore Core onto the flat chuck face during installation. Mounting BullseyeBore Core on the center of the flat chuck face during installation leads to better balance and rotational stability during drilling operations.
Second, if you have a drill with a small chuck or a hex shank bit chuck, a Standard Chuck Alignment Guide can be helpful. Lateral displacement (sliding slightly across the flat chuck face) can occur with smaller chucks such as standard 0.375” (3/8”) keyed or keyless chucks or standard 0.25” (1/4”) hex shank chucks during drilling or electric breaking.
WHAT SAFETY GUIDELINES SHOULD I FOLLOW BEFORE, DURING, AND AFTER BULLSEYEBORE CORE USE?
Always read and follow the BullseyeBore Core Safety Guidelines before attempting to use BullseyeBore Core or any BullseyeBore Core accessories on a drill or in an actual drilling operation. Although BullseyeBore Core and the BullseyeBore Core accessories are designed with safety in mind, power tools such as drills are dangerous, and accidents can occur if they are not used properly. Please also read this complete FAQ to familiarize yourself with the BullseyeBore Core product and accessories before use.
BULLSEYEBORE CORE AT A GLANCE
Designed to work with common commercial drill chucks.
Rotates invisibly during operation for a complete view of the worksurfaces.
Utilizes a Class 2 laser for eye safety.
Works with traditional drill bits up to 0.5” shaft diameter as well as various aircraft, hex shank, spade, augur, and step bits.
Mounts quickly, easily, and securely to a drill chuck.
BULLSEYEBORE CORE AT A GLANCE
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IT'S A HEADS-UP DISPLAY FOR YOUR DRILL
BullseyeBore Core works with most common commercial power drills and any standard drill bit up to 0.5”. Just connect BullseyeBore Core to your existing drill chuck and go.
WORKS WITH YOUR DRILL
WORKS WITH YOUR DRILL
AS FEATURED IN
IT'S A HEADS-UP
DISPLAY FOR
YOUR DRILL
AS FEATURED IN
IT'S SAFE
TO USE
ATTACHES AND DETACHES IN SECONDS
CHOOSE THE MODEL THAT SUITS YOUR NEEDS
WILL IT WORK ON YOUR DRILL?
FAQ
WHYBULLSEYEBORE CORE?
Drilling straight is harder than it looks on TV. With BullseyeBore Core, drilling straight is an easy and repeatable process. The device beams concentric circular patterns on the worksurface to show when your drill is aligned. This makes drilling straight easy for DIYs and seasoned Pros.
DRILL STRAIGHT EVERY TIME
With BullseyeBore Core, you'll be able to easily drill into walls, floors, ceilings, boards, etc. at any angle. Bullseyebore Core does not need gravity as a reference.
IN ANY ORIENTATION
IT'S SAFE TO USE
If any object or a hand comes into contact with BullseyeBore Core, rotation ceases immediately and safely, even if the drill bit is still spinning.
WORKS WITH YOUR DRILL
We tested drills ad infinitum. Thousands of common standard electric drills and drill chucks are compatible.
& IT'S NO-CONTACT
Traditional drill guides, drill cups, and drill blocks add clutter and get in the way, and you always run the risk that they will mar or dent your work surface. Bullseyebore Core attaches directly to your drill and doesn't touch the work surface. When rotating, it's virtually invisible and doesn't obstruct your view.
“IF YOU'VE EVER HAD TROUBLE DRILLING A PERFECTLY STRAIGHT HOLE, BULLSEYEBORE IS HERE TO HELP. WITH [UP TO] THREE CONCENTRIC LASER RINGS, IT HELPS YOU DRILL STRAIGHT DOWN.”
Popular Mechanics
JUST ALIGN THE CIRCLES AND GO
BULLSEYEBORE CORE GIVES YOU THE ACCURACY YOU NEED. EVERY TIME.
DRILL STRAIGHT IN ANY ORIENTATION
STEP
SPADE
AIRCRAFT
STANDARD
AUGUR
FORSTNER
HEX SHANK
MASONRY
Designed to work with common commercial drill chucks.
Rotates invisibly during operation for a complete view of the worksurfaces.
Mounts quickly, easily, and securely to a drill chuck.
Utilizes a Class 2 laser for eye safety.
Works with traditional drill bits up to 0.5” shaft diameter as well as various aircraft, hex shank, spade, augur, and step bits.
SEE IT IN ACTION
Any mention or depiction of third-party brand names, products, product names, trademarks, or registered trademarks on the Service is solely for the purpose of identification or depiction of use with our Products and does not imply any endorsement, sponsorship, or affiliation with our Service or Company. All other brand and product names mentioned herein are trademarks of their respective owners.
