CROWNE TOOLS / DIAMOND TOOLING / THINGS WORTH WANTING
BOMBER BUNDLE. The room has other plans.
The tile is beautiful. The pipe is in the way. Crowne’s diamond-tool kit lives in the fascinating space between those two facts.
A showroom tile has led a sheltered life.
It has been allowed to remain a rectangle. Nobody has asked it to go around a shower valve, negotiate an outside corner or make a neat introduction to a drain. It looks magnificent, and it has very few responsibilities.
Installation changes that. The room contains things. Some of those things are inconveniently round. Others have been placed with an enthusiasm for plumbing that does not necessarily extend to the tile layout. Somebody has to preserve the design while making the material fit.
That is the work behind Crowne Tools’ BOMBER BUNDLE. The limited-edition diamond-tool kit gathers equipment for cutting, drilling, adjusting openings and refining edges. The military-green case gives it a recognizable identity, but the interesting part is the sequence of problems represented by what is inside.
The contents follow the interruptions.
The published BOMBER BUNDLE inventory names two special-edition Butter blades, green NIP Nuts, Big Boy and Pocket Rocket shaping tools, four vacuum-brazed hole bits in 25, 35, 50 and 105mm sizes, the three-size Needle D set, a 120-grit hand pad, Honey Combo polishing pads, a rubber backer and the hard case. A Tile Bullseye drilling template and its carrying case are also listed with the bundle.
The collection becomes easier to understand when you imagine a piece of tile moving through a job. It may need a straight cut first, then an opening. The opening may need a little enlargement or a beveled rim. An exposed edge may need refinement after the major shaping is complete.
Those are different operations. A tool that establishes a hole is doing a different job from one that adjusts its boundary. An abrasive that removes material quickly has a different assignment from a finishing pad. The kit recognizes those changes in purpose instead of treating every encounter with tile as one generic act of cutting.
The case therefore contains a kind of working vocabulary. It gives a name and a physical tool to several decisions an installer may face. Understanding that vocabulary is more useful than counting the pieces and assuming a larger number explains the value.
Crowne’s story starts with people working in tile.
Crowne describes its background as a continuation of the work begun under the Calidad Tools name. Its company account says it was founded in California and is now based in Texas, with products sourced from several countries. The emphasis is on tools developed around the experience of tile professionals.
That is the documented company story. The deeper historical journey in this case belongs to ceramics and abrasives, two bodies of knowledge that meet whenever an installer modifies a fired surface.
The company’s naming has a personality of its own. Butter, Big Boy and Pocket Rocket are not exactly entries from a committee’s preferred technical vocabulary. I am comfortable with that. A memorable name can make a specialized tool easier to talk about, provided there is a real function behind it.
Here, the functions are specific enough to carry the humor. The cone enlarges an existing opening. The guide helps locate the start of a hole. The nut changes what can contact the tile near the grinder. The practical detail gives the names something to stand on.
The material arrived here by way of a kiln, and a long history.
The Victoria and Albert Museum’s ceramics guide describes medieval inlaid tiles made by stamping clay and filling the impressions with contrasting clay. In the nineteenth century, related decorative work used molded designs and, in some production, mechanized powder-forming processes. A patterned surface was already a meeting of materials, methods and repeatable design.
Porcelain has its own history of technical fascination. The museum explains how Chinese porcelain became highly prized in seventeenth-century Britain while Europeans sought to reproduce it. Its account of hard-paste porcelain connects the material to mineral ingredients and high-temperature firing. This is historical ceramic context, rather than a claim that a modern floor tile has the same recipe as a museum vessel.
The connection that interests me is transformation. A workable mixture becomes an object with a very different set of properties after firing. The installer receives the result of that process. The tile cannot simply be persuaded back into its earlier, cooperative state.
That is part of the appeal of ceramics more broadly, including the different applications I discuss in industrial ceramic coatings. Processing develops useful properties, and those properties affect how people can work with the finished material. The attractive surface has a material history underneath it.
With a different arrangement.
The diamond is doing a job, not making a romantic gesture.
Diamond and graphite are both forms of carbon. Their very different behavior comes from the way their atoms are arranged and bonded. The Gemological Institute of America’s explanation of diamond structure makes that connection between composition, crystal structure and hardness clear.
That is one of those scientific facts that stays interesting no matter how often I encounter it. Naming the element does not finish the explanation. Arrangement matters. The same element can participate in a material that marks paper or one used to abrade a hard surface.
For a tool, the useful property is the abrasive’s ability to act on the workpiece. A diamond blade is not a circular piece of gemstone. It places diamond abrasive at a working surface, supported by a tool body and a bond appropriate to its design.
The U.S. Geological Survey’s account of industrial diamond describes abrasive uses and the importance of manufactured diamond, whose properties can be tailored for applications. Industrial demand has given diamond a working life far beyond jewelry. That general industrial history does not establish the particular source or production method of every diamond grain in this bundle.
To me, the interesting luxury here is capability. A material associated with display is helping someone make a precise opening for a pipe. The diamond has traded the velvet box for a much more demanding day.
Butter gives the first cut its own engineering.
The bundle includes a Butter Premium special edition and a separate 4.5-inch Butter blade with military-inspired artwork. For the underlying Premium design, Crowne’s current product description identifies a turbo-mesh diamond rim, a thin profile and a solid brass flush-mount adapter with a 5/8-inch-11 connection. The exclusive decoration belongs to the bundle; the technical explanation comes from the named product family.
The thin working profile is worth noticing because cutting requires removing material along the path. All else being equal, a narrower path means less material must be removed. That is a geometrical observation, not a measured cutting-speed claim for this blade.
The mounting arrangement contributes another kind of geometry. The tool has to approach the intended cut without its surrounding hardware occupying space the job needs. Flush access is about the relationship between the blade, its mounting and the nearby surface.
The steel body, abrasive rim and mounting hardware therefore have separate responsibilities. The abrasive engages the material, while the rest of the assembly supports and positions that working region. A blade’s name may be playful, but the physical relationships are quite serious.
The small plastic part may be the best introduction to the whole idea.
The NIP Nut responds to a problem that has nothing to do with whether the blade itself can cut. When grinder hardware gets close to a finished tile surface, the hardware can become part of the contact problem. Crowne’s design uses impact-resistant plastic, a broad circumference and a tapered profile intended to keep metal away from the tile and deflect incidental contact. It is listed for compatible 5/8-inch-11 grinder setups.
That is a wonderfully specific observation. Someone looked beyond the nominal job of the nut, which is part of securing the assembly, and considered the space in which installers actually use it. The object still has to serve its fastening role, but its exterior is now designed with a neighboring finished surface in mind.
This is the kind of detail I look for in industrial product design. The product has a primary function and a surrounding situation. Good design pays attention to both. The environment is allowed to influence the shape.
The green version gives the BOMBER kit its own visual continuity. More interesting to me is the decision to treat incidental contact as a design problem in the first place. That is close observation turned into a component.
A circular opening is a different problem from a straight cut.
The four larger hole bits in the BOMBER inventory cover 25, 35, 50 and 105mm nominal diameters. Crowne’s 35mm Rook description explains the current vacuum-brazed format as a steel-bodied diamond hole saw with a direct 5/8-inch-11 thread for a compatible angle grinder.
A hole saw works around the boundary of an opening. It does not need to turn the entire interior area into dust in the same manner as a solid cutting face. The ring-shaped path is the important geometry: define the perimeter, remove material along that path and separate the center.
The area and circumference of a circle grow differently as diameter increases. Circumference is proportional to diameter. Area is proportional to diameter squared. A 100mm circle has twice the circumference of a 50mm circle, but four times its area. Those are simple geometric facts, not predictions of drilling time.
They help explain why the form of a tool matters. A ring-shaped abrasive is organized around a boundary rather than the whole disk inside it. Changing the diameter changes the physical work, the contact path and the demands on the complete setup.
Crowne’s 105mm Rook page adds the practical context of larger penetrations and extended diamond coverage beside the cutting edge. The appropriate opening still comes from the actual fixture, required clearance and installation plan. A convenient product diameter does not get to redesign the plumbing.
Vacuum brazing keeps the abrasive in the conversation.
Crowne describes its vacuum-brazed hole-saw construction as bonding exposed diamond abrasive to the working surface. That arrangement puts hard particles where they can engage the tile while the steel body carries the overall shape. The large Rook description explains the construction in those terms.
There are two jobs here that are easy to collapse into one. The abrasive has to be able to remove material. It also has to be held in a useful position while doing so. The bond is part of the engineering, just as the diamond is.
I think that is a useful corrective to how we sometimes talk about advanced materials. The exciting ingredient gets the headline, but it still needs an architecture. A very capable particle without a way to remain at the working surface is an interesting particle with a short appointment.
The same larger idea appears throughout the bundle. Geometry positions the working region. A body supports it. A connection attaches it to the intended tool. A person guides the complete arrangement. The result comes from their cooperation.
The hole has to start in the right place.
The Tile Bullseye supplies a physical reference at the beginning of drilling. Crowne describes four interlocking guide rings, a center alignment reference and water channels. The rings nest into a compact reusable assembly, and the bundle lists a dedicated carrying case with it.
The problem is easy to appreciate even without having drilled a tile. A mark on a surface tells you where you want the hole. A rotating tool still needs to establish its path at that location. The guide helps connect the drawn intention with the first physical contact.
That makes it a small example of a much broader idea in making things: turn information into a constraint. A line is information. A guide offers a boundary that can help direct an action. Both matter, but they participate in the task differently.
The water channels add another function to the same object. They help keep cooling water near the cutting area when used with a suitable wet-working setup. The guide does not determine the electrical suitability of the driving tool or replace the instructions for the bit and machine.
Small holes deserve their own equipment too.
The bundle’s three-size Needle D set addresses smaller openings. The current standalone three-bit listing specifies 6, 8 and 12mm sizes, a 5/8-inch-11 threaded connection and wax-packed cores for cooling assistance. Crowne has also sold individual Needle D bits with quick-change shanks, so the connection supplied with a kit should be checked before choosing the driving tool.
That distinction is useful because the name of a product family is not the same thing as its mechanical interface. The bit, connection and driver have to belong together. A threaded grinder accessory and a bit intended for a drill chuck are different arrangements even when they make similarly sized openings.
Small diameter also does not make heat irrelevant. The abrasive is doing work at a confined contact region. Crowne’s wax-core feature is intended to help with cooling there, while the correct speed, technique and operating limits remain those of the particular bit and machine.
Pocket Rocket begins after the hole exists.
The Pocket Rocket combines a small cone with a finger-bit working section. Crowne lists a 0–25mm shaping range, a 70/80-grit cone, a 50/60-grit finger section and a 5/8-inch-11 thread. Its description explicitly identifies it as a tool for enlarging and refining existing holes, rather than a core drill for creating a new one.
That boundary makes its purpose clearer. Establishing an opening and adjusting an opening are different stages. The second may call for removing material from one side, changing the edge or refining the fit after the main hole is present.
A compound shape gives the user different contact regions on one accessory. The tapered portion can address a rim, while the finger section provides another geometry for working inside the opening. The tool does not need to be universal to be versatile within that assignment.
This is the part of installation that interests me most: the original plan has become a physical piece, and now the fit has to be resolved locally. The adjustment may be small, but the finished result depends on it. Pocket Rocket is an entertaining name for a tool intended for that very particular conversation.
A hollow center.
Big Boy leaves some of the metal out.
The Big Boy chamfer cone is intended for larger shaping and hole-enlargement work. Crowne emphasizes the hollow-core construction, which removes material from the center while retaining the broad diamond working surface.
That is an elegant place to look for improvement. The useful contact occurs on the outside. Filling the entire volume with metal is not automatically necessary to create that contact surface. A hollow structure can serve the working shape while reducing mass compared with a solid version of the same general size.
The design does not eliminate the need for adequate strength or a compatible machine. It changes how material is distributed within the tool. The outside has a job; the inside needs enough structure to support it, with no obligation to be solid simply because it could be.
I like that as an example of engineering economy. More capability does not always mean adding material. Sometimes the thoughtful act is identifying where material can be removed while preserving the function. In a kit full of tools for shaping other things, one of the tools has benefited from that reasoning itself.
The cut is complete before the finish is complete.
A newly established edge has the right broad shape, but its surface can still need attention. The bundle includes a hand pad, polishing pads and a rubber backer to address that later stage. Crowne’s Honeycomb finishing-pad range uses 50, 100, 200 and 400 grits and is described for edge profiles, bevels, chamfers and related detail work.
The important principle is progressive refinement. An abrasive leaves a surface condition as it removes material. A subsequent stage can reduce the marks from the previous one. The desired finish determines how far that process needs to go; the highest number on a particular set is not a promise of the same appearance on every material.
Shape and finish also answer different questions. A chamfer is a geometry. A polished surface is a condition of that geometry. A beautifully finished edge can still have the wrong shape for the installation, just as a correctly shaped edge may still need refinement.
This is why the final tools belong in the same conversation as the cutting equipment. They address the part of the work that people may see and touch after the hole saw and blade have done their jobs. The collection follows the result far enough to include how it presents itself.
One opening can contain several different decisions.
Consider a hypothetical tile opening around a fixture. This is a way to understand the tool roles, not a substitute for an installation procedure. The required dimensions and clearances come from the fixture and project; the accessories must suit the material and driving equipment.
| Decision | Relevant tool role | What the decision establishes |
|---|---|---|
| Where does the opening belong? | Layout and an appropriate drilling guide | Position relative to the tile and fixture. |
| How is the opening created? | A suitable diamond hole bit | The initial circular boundary. |
| Does the boundary need adjustment? | A milling or chamfering accessory | Local clearance or edge geometry. |
| What should the finished edge feel and look like? | Appropriate finishing abrasives | The final surface condition. |
The interesting thing is how many kinds of judgment can be hidden inside one apparently simple feature. Once the fixture is installed, the opening may almost disappear. Good preparation is often rewarded by becoming difficult to notice.
The setup belongs to the quality of the work.
Diamond accessories work as part of a complete arrangement. Material compatibility, attachment, rated speed, guarding and the driving tool’s instructions all matter. A shared thread size is one compatibility condition, not the entire specification.
Cooling and dust management deserve the same practical attention as alignment. Crowne describes wet-capable operation for several cutting accessories, but water should be used only with equipment and procedures intended for it. The NIOSH guidance on silica explains why cutting, grinding, drilling and polishing silica-containing materials require effective exposure controls. Suitable wet methods or dust extraction are part of the setup, with respiratory protection where required.
That is not separate from craftsmanship. The person doing the work needs conditions that support controlled, repeatable operations. A beautiful edge is a result made by somebody, in a workspace, with equipment that has operating requirements.
What appeals to me about the BOMBER collection is the range of specific tasks it acknowledges. Using that range well still depends on the installer’s knowledge. A thoughtfully chosen kit gives that knowledge useful physical options.
Eventually, the room stops looking like a collection of obstacles.
Stand back from a well-finished installation and you see a coherent surface. The grid continues. The fixtures belong. An outside corner looks intentional. The separate acts of drilling, shaping and refining no longer announce themselves.
That is the achievement I want to preserve in my digital time capsule: the intelligence required to make a difficult material look comfortably at home in an ordinary room. Crowne’s BOMBER BUNDLE is interesting because it gives that intelligence a set of specific instruments, from the contact-conscious NIP Nut to the hollow Big Boy cone and the Bullseye’s physical reference.
The names have plenty of swagger. The work they describe is attentive. For me, that combination is the charm. A product can have some fun with its identity while taking the installer’s actual problems seriously.
The showroom rectangle has acquired holes, corners and responsibilities. It still looks beautiful. Somebody earned that.
Before the tile meets the tool.
What is the Crowne Tools BOMBER BUNDLE?
It is a limited-edition collection of diamond cutting, drilling, shaping and finishing accessories in a military-green hard case. It is not an angle grinder or a complete powered tool system.
Which larger hole-bit sizes are listed in the bundle?
The published bundle inventory lists 25, 35, 50 and 105mm vacuum-brazed hole bits.
Does the bundle include a drilling guide?
The current listing includes a Tile Bullseye drilling template and its own carrying case.
What does the Tile Bullseye do?
It provides interlocking guide rings, a center reference and water channels to assist alignment and the start of a suitable diamond hole saw.
What is special about the NIP Nut?
Its plastic body and tapered shape are designed around working near finished tile surfaces, helping reduce incidental metal contact in compatible grinder setups.
Can Pocket Rocket drill a new hole?
No. Crowne specifies it for shaping, enlarging and refining existing openings. It is not a core drill.
What is Big Boy’s hollow core for?
It removes material from inside the large chamfer cone to reduce mass while retaining the broad external working surface.
Does every Needle D bit use the same connection?
No. Crowne has sold quick-change bits and now lists a threaded three-bit set. Check the actual connection supplied with the bundle before selecting the driving tool.
What distinguishes the two special-edition Butter blades?
The bundle lists a Butter Premium blade with hand-grenade artwork and a Butter 4.5 blade with military-camo and missile artwork. These edition names identify their presentation; they do not establish a measured performance advantage.
Does a 5/8-inch-11 thread establish complete grinder compatibility?
No. The full setup must also satisfy the accessory and machine requirements for speed, attachment, guarding, material and operating method.
Do the polishing pads guarantee a mirror finish on every surface?
No. The appropriate abrasive sequence and final appearance depend on the material, edge geometry and intended finish.
Is this a personal test of the BOMBER BUNDLE?
This is a researched editorial appreciation of the kit and its design ideas. It does not report personal ownership, installation results or instrumented performance testing.
The products and the material record.
Bundle and current component information checked September 10, 2026. The bundle listing identifies the included items; linked component pages explain their respective designs. Limited-edition contents and supplied connections should be confirmed against the current kit. Scientific explanations and circle calculations are general context, not product test results.
- Crowne Tools: BOMBER BUNDLE contents
- Crowne Tools: company background
- Crowne Tools: Butter Premium blade construction
- Crowne Tools: NIP Nut design
- Crowne Tools: 35mm Rook vacuum-brazed hole saw
- Crowne Tools: 105mm Rook hole saw
- Crowne Tools: current threaded Needle D’s three-bit set
- Crowne Tools: Pocket Rocket cone and finger bit
- Crowne Tools: Big Boy hollow-core chamfer cone
- Crowne Tools: Tile Bullseye drilling guide
- Crowne Tools: Honeycomb finishing-pad set
- Victoria and Albert Museum: ceramics, porcelain and inlaid tiles
- Gemological Institute of America: diamond structure
- U.S. Geological Survey: industrial diamond
- NIOSH: silica and work involving cutting, drilling and polishing