ハープ List of Products and Services

The "Floating Cleaning Basket" is a set of a plastic mesh basket and a float. It can be used with ultrasonic cleaners. Since the basket floats, there is no need to hold it during the cleaning process. Additionally, being made of plastic, it does not damage the items being cleaned. 【Features】 ■ Made of plastic ■ Set of mesh basket and float ■ Usable with ultrasonic cleaners ■ No need to hold the basket during cleaning ■ Does not damage the items being cleaned *For more details, please refer to the PDF document or feel free to contact us.

• plastic
• Other cleaning machines

"White Rhodium/Black Ruthenium" is a plating solution handled by HARP Co., Ltd., which manufactures and imports/export tools, machines, and supplies for jewelry and accessory production. The "White Rhodium Plating Solution" is a striking white rhodium plating that contains a unique gloss agent to enhance product value. The "Black Ruthenium Plating Solution" allows for black plating over nickel-plated or rhodium-plated gold, silver, and platinum products. [Product Lineup] ■ White Rhodium Plating Solution ■ Black Ruthenium Plating Solution *For more details, please refer to the PDF materials or feel free to contact us.

• Plating Equipment

The "Mekki Basic" is a plating device that improves workability by adopting a constant current control circuit, eliminating the need for cumbersome current density adjustments. It maintains the plating solution at an appropriate temperature using a heater installed in the plating tank. The temperature can be selected from 45°C and 55°C, allowing for flexible operation tailored to the plating solution. We also offer a compact plating device called "Chibi Mekki," which is specifically designed for plating a single ring with simple operation. 【Features】 ■ Adoption of constant current control circuit ■ No need for current density adjustments ■ Maintains plating solution at an appropriate temperature with a heater installed in the plating tank ■ Selectable between 45°C and 55°C *For more details, please refer to the PDF document or feel free to contact us.

• Plating Equipment

"Chibi Meki" is a compact plating device designed for simple operation, specifically for plating one ring. It is pre-set to the current value suitable for one ring, so there is no need to adjust the current during use. The liquid temperature is electronically controlled to be optimal for rhodium plating solution. 【Features】 ■ Specialized for one ring (pre-set to the current value for one ring) ■ Simple operation compact plating device ■ No current adjustment needed ■ Electronically controlled to the optimal liquid temperature for rhodium plating solution Videos are available on the Harp website. *For more details, please refer to the PDF document or feel free to contact us.

• Plating Equipment

The 'Oil Stone - White' is a natural substitute made from A abrasive particles (equivalent to 3000 grit). It is used for tasks that require a high-quality finish. In addition to this product, we also offer other items such as the Alcanthus oil stone. [Product Lineup] ■NO.H105: 75×25×9mm ■NO.H104: 100×25×13mm *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives
• Grindstone

The "Arkansas Oil Stone" is a whetstone made from raw stones mined in the United States. In recent years, due to resource depletion, high-quality stones have become very expensive. Our company offers reasonably priced stones that are sufficient for regular sharpening, excluding special applications. We categorize them into second-class and third-class products based on quality, with relatively higher quality stones packaged in wooden boxes. 【Lineup】 ■ NO.ARK60-2 (Second-class): 60×25×7 ■ NO.ARK60-3 (Third-class): 60×25×7 ■ NO.ARK75-2 (Second-class): 75×25×7 ■ NO.ARK75-3 (Third-class): 75×25×7 ■ NO.ARK60-1 (In wooden box): 65×25×7 *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives
• Other work tools
• Other safety and hygiene products

The "Buffing Stick" is a wooden stick used for buffing necklaces and bracelets. By wrapping the necklace or bracelet around this product, you can perform safe and reliable buffing work. It can also be used for buffing the outer circumference of rings. 【Features】 ■ Fixes necklaces and bracelets by wrapping them around ■ Usable for buffing the outer circumference of rings ■ Safe and reliable workability ■ Outer diameter 66φ × total length 170mm *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives
• Other work tools
• Other safety and hygiene products

The "Ring Inner Grinding Holder" is a holder that allows for inner surface polishing of rings without worrying about heat. It securely grips all types of rings, ensuring safe and reliable operation. The gripping part is covered with felt, so it won't scratch the rings. 【Features】 ■ Allows inner surface polishing of rings without worrying about heat ■ Securely grips all types of rings ■ Gripping part is felt-covered to prevent scratches A video introduction is available on the Harp website. https://www.harp.co.jp/product/1192/

• Other abrasives
• Other work tools
• Other safety and hygiene products

We offer a range of "polishing materials" used for buff polishing. Starting with "P-Pika polishing material" that gives brilliance to platinum, we also have "blue stick" and "P-fine polishing material" in our lineup. In addition to polishing materials, we carry general cloth and felt buffs used for buff polishing, flap buffs with Scotch-Brite attached radially, chamois leather buffs, and brushes made of Polyrabbit. 【Product Lineup】 ■ P-Pika polishing material: for platinum ■ Blue stick: for gold, silver, platinum, and other metals ■ P-fine polishing material: for platinum and precious metals ■ Silver Pika polishing material: when you want to achieve both gloss and cutting ability ■ Gold Pika polishing material: for gold *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "Flap Buff" is a rotating polishing tool that features numerous strip-shaped buff materials arranged radially and attached to an axis or flange. It has moderate flexibility, conforms well to the work surface, and wears down from the tip of the buff material, exposing new buff material, which allows for a consistent cutting edge that lasts for a long time. We offer a lineup including "Cotton Flap Buff," which is ideal for mirror finishing of gold, platinum, and titanium, as well as "Pure Wool Flap Buff" and "Scotch Flap Buff." 【Features】 ■ Moderate flexibility ■ Conforms well to the work surface ■ Consistent cutting edge lasts for a long time *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

"Buff Scraper" is a product used for fluffing new buffing pads. By fluffing, it achieves a beautiful buff finish. It is used by pressing the buff scraper against the buff while rotating the buff with a motor. In addition to the common cloth and felt buffs used for buff polishing, we offer flap buffs with Scotch-Brite attached radially, chamois leather buffs, and brushes made of Poly-Rabbit. 【Features】 ■ For fluffing buffs ■ Replacement blades sold separately: NO.H103-A (2 pieces) *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "Buff for the Inner Surface of Rings" is a buff used for polishing the inside of rings. We offer both soft and hard types. In addition to the common cloth and felt buffs used for buff polishing, we also have flap buffs with Scotch-Brite attached radially, suede leather buffs, and brushes made of poly-rabbit. 【Product Lineup】 ■NO.811: Soft Type ■NO.811-H: Hard Type *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "resin-filled felt buff" is a polishing buff that replaces the use of a spatula. It efficiently achieves sharp edges and flat surfaces. Please fix it to the buff motor shaft and rotate it while using files or sandpaper to shape it according to your needs, ensuring there is no surface runout or core runout before use. 【Features】 ■ Polishing buff that replaces the spatula ■ Efficiently achieves sharp edges and flat surfaces ■ Made with resin-filled felt *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

"Felt buff" is made by layering felt and sewing it together, then cutting it into a round shape, similar to cloth buffs. In addition to the common cloth buffs used for buff polishing, we offer flap buffs with Scotch-Brite attached radially, chamois leather buffs, and brushes made of poly-rabbit. 【Product Lineup (Partial)】 ■NO.806: 75φ×6φ×15 ■NO.807: 85φ×13φ×20 ■NO.1202: 100φ×13φ×20 ■NO.808: 125φ×13φ×20 ■NO.809: 150φ×13φ×20 *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "deerskin buff" is made by layering deerskin and sewing it together, then cutting it into a round shape, similar to a cloth buff. It excels in polishing. In addition to the commonly used cloth buffs and felt buffs for buffing, we also offer flap buffs with Scotch-Brite attached radially and brushes made of poly-rabbit. 【Features】 ■ Layered deerskin processing ■ Excellent for polishing *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "Sokkō Buff" has a gentle contact surface with the workpiece during buffing, allowing for fast and high-quality polishing. It is suitable for polishing titanium and stainless steel. In the polishing of titanium, it is important to minimize heat generation, as heat alters the surface composition. Therefore, selecting a buff and abrasive material that cuts quickly and polishes efficiently is crucial, and this product serves as an excellent buff under these conditions. 【Features】 ■ Gentle contact surface with the workpiece ■ Fast and high-quality polishing ■ Ideal for polishing titanium and stainless steel *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

"Plus Alpha" is a buff made from a delicate fiber non-woven fabric, which minimizes dust and loss due to thread fraying, providing excellent workability. It achieves a finishing surface comparable to cloth buffs, with a firm feel during use. It is over 30% lighter than our standard cloth buffs, making it less likely for the buff motor to slow down, resulting in outstanding workability. We offer both bulk and all sewing options. 【Features】 ■ Made from delicate fiber non-woven fabric ■ Minimal dust and loss due to thread fraying ■ Finishing surface comparable to cloth buff finishing ■ Lightweight and less likely to slow down the buff motor ■ Ideal for polishing metals and plastics *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "Cloth Buff" is made by layering fabric materials, sewing them together, and cutting them into a round shape, with a variety of fabric types available. We offer the "Yellow Tripoli Buff," made from a special muslin fabric that has been chemically treated to enhance rigidity, as well as the long-lasting version of the Yellow Tripoli Buff, the "Plum Tripoli Buff," and the thin type, the "Plum Tripoli Iron Buff." There are two types available: the "Rose Type," which is sewn only around the installation hole, and the "Full Sewing Type," which is sewn all over, including around the installation hole. 【Product Lineup (Partial)】 ■ Yellow Tripoli Buff: Full sewing, leather adhesive with needle hole center specification (only for 141-2600) ■ Plum Tripoli Buff: Rose/Full sewing, leather adhesive with needle hole center specification ■ Plum Tripoli Iron Buff: Full sewing, leather adhesive with needle hole center specification *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "fabric buff" is made by layering and sewing together pieces of fabric, then cutting them into a round shape, and we offer a variety of fabric materials. We have a lineup that includes the harder "pink buff" for intermediate finishing, the softer "blue buff" compared to the pink buff, and the "No. 3 raw buff" and "white buff," which are ideal for finishing. There are two types: the rose type, which is sewn only around the mounting hole, and the all-sewn type, which is sewn around the mounting hole as well as throughout the entire piece. 【Lineup (partial)】 ■ Pink buff: Rose ■ Blue buff: Rose ■ No. 3 raw buff: Rose / All-sewn ■ White buff: Rose *For more details, please refer to the PDF document or feel free to contact us.

• Hand polishing and filing
• Other abrasives

The "Finger Protection Tape" is a protective tape that allows you to maintain fingertip sensitivity even during delicate buffing tasks. It is a thin and strong special fabric tape designed to prevent burns, cuts, and abrasions during buffing, metalworking, and glass crafting, with light adhesive properties that make it easy to apply and remove. 【Features】 ■ Maintains fingertip sensitivity ■ Prevents burns, cuts, and abrasions ■ Light adhesive properties *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools
• Other safety and hygiene products
• Adhesive tape

The "Brush Pen" is an ideal product for hairline finishing of precious metal accessories, matte finishing, and removing rust from metals. We offer a lineup that includes the glass brush pen "No.BP01," which is in a mechanical pencil style, as well as "No.BP02," which can use three types of interchangeable tips, including brass and steel brush pens. 【Features】 ■ Hairline finishing ■ Matte finishing ■ Rust removal from metals ■ Three types of interchangeable tips available (No.BP02) *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools
• Brush

The "Sandblast Set" is a product that can be used for matte finishing of precious metal jewelry. When sprayed onto the mirror surface of precious metals, it produces a fine semi-gloss finish. The set includes items such as a "sandblast gun" and "air hose." 【Features】 ■ Easy matte finishing of precious metals ■ Achieves a fine semi-gloss surface *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools
• Coating Agent

The "Surface Pattern Maker" rapidly strikes the workpiece with advanced tools to create a shiny, textured surface pattern. The surface roughness can be adjusted by regulating the air pressure. Unique expressions can be achieved with two types of tips (square pyramid and flat). [Features] ■ Shiny textured surface pattern ■ Surface roughness can be changed by adjusting air pressure ■ Two types of tips *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools
• Air Tools

The "Handy Dust Collection Mouse" is a device for collecting valuable precious metal dust during cutting and buffing operations on your desk. Please use it connected to our product "Petit Vacuum" or a household vacuum cleaner. 【Features】 ■ Collects precious metal dust ■ Can be connected to household vacuum cleaners ■ Total length approximately 1120, hose length 930 * For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

"The Lossless Box III" is a front suction type that efficiently captures and collects cutting dust and particles. By connecting our product "Petit Vacuum II" or a household vacuum cleaner, you can achieve a low-cost dust collector. Of course, it can also be used as a standalone unit. 【Features】 ■ Can be connected to household vacuum cleaners ■ Front suction type ■ Can be used as a standalone unit *For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

The "Cyclone Dust Collector" is a device that directs the dust collected through suction into an internal conical cylinder, applying rotational centrifugal force to separate the dust from the air by utilizing the weight difference between them. It can collect dust from dental plaster and precious metal-containing dust without a filter. 【Features】 ■ Collects over 90% of dust ■ Separates using the weight difference between dust and air *For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

The "Petit Vacuum II" is a lightweight and compact dust collector. Being brushless, it allows for continuous operation, has a long lifespan, and operates quietly. The filter can easily utilize household vacuum cleaner bags that are readily available. 【Features】 ■ Equipped with a powerful brushless fan ■ Lightweight and compact ■ Long lifespan and low noise *For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

"Deji Flat" is a versatile and variable-speed flat surface grinding machine that is convenient for grinding and polishing flat surfaces. Sandpaper and felt buffs can be easily attached and detached with one touch. The main body has achieved a compact design. 【Features】 ■ Variable-speed model ■ Sandpaper and felt buffs are detachable ■ Compact body *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

The "All-in-One Dust Collection Buff Motor" is a vertically oriented device with upward exhaust that can be installed in narrow spaces along walls. It features a handle for easy mobility and can be placed on the seats of a light vehicle. It comes with a dust collection drawer and a plate holder, making it suitable for micro motor work. 【Features】 ■ Slim vertical design with upward exhaust ■ Easy to move with a handle ■ Built-in bright lighting ■ Available with a digital motor and a denyu buffer *For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

The "No.8200D Dust Collector Series" offers three types of models to choose from. Starting with the dust collection digital motor "No.8200D+9400," which allows you to freely adjust the rotation speed according to the material being polished, we also have the dust collection buff motor "No.8200D+DB-200H," and the dust collector only model "8200D" in our lineup. 【Lineup】 ■ Dust Collection Digital Motor ■ Dust Collection Buff Motor ■ Dust Collector Only *For more details, please feel free to contact us.

• Other surface treatment equipment
• Wafer processing/polishing equipment

Introducing the consumables of the "Kiraku Series," which creates a powerful flow with its unique magnet arrangement and beautifully polishes surfaces. The "Liquid Compound" maintains smooth lubrication while minimizing foaming, enhancing the polishing effect and resulting in a bright finish. It also allows for quick rinsing, making it exceptionally user-friendly. Additionally, we offer products such as the "Gloss Agent," which continuously cleans the media to enhance polishing effects, "Powder Compound," and "Stainless Polishing Pins for Magnetic Polishers." *For more details, please feel free to contact us.

• Other surface treatment equipment
• Wafer processing/polishing equipment

The magnetic barrel polishing machine "Mega Kiraku Series" creates a powerful flow like a tsunami with its unique arrangement of magnets, beautifully polishing items. You can choose from two types based on your needs: the "Pin Type," suitable for cast blasting and detailed polishing, and the "Blend Type," designed for finishing polishing of bracelets, necklaces, and precious metal products. 【Features】 ■ Magnetic barrel polishing machine with unique magnetic flow performance ■ Creates a powerful flow for beautiful polishing ■ Two types to choose from based on application *For more details, please feel free to contact us.

• Other surface treatment equipment
• Wafer processing/polishing equipment

The "Ring Outer Perimeter Engraving Attachment" allows you to engrave text on the outer perimeter of a ring simply by attaching it to the "Harp Graph Flat Engraving Machine No. 3200." The rings that can be engraved are flat or have a very slight curve. Additionally, we offer a "Zippo Lighter Engraving Vice" and a "Bangle Engraving Vice." *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The "Harp Graph Plane Engraving Machine" is designed to engrave particularly small characters, allowing for a reduction of up to 1/10 of the original letter form (glyph). Since it uses a diamond blade engraving method that does not require power sources like motors, it can engrave on hard metals and glass. 【Features】 ■ Capable of engraving small characters ■ Reduction of up to 1/10 ■ Can engrave on hard metals and glass *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The 'Stylus for Ring Engraving Machine (sold separately)' is a specially tapered stylus required when using the ultra-small letter plates 'No.1700-7' or 'No.3700-7'. We also offer the replaceable diamond point 'No.1018B' for when it wears out. *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The 'Optional Claws for Ring Engraving Machine' are designed for use with deformed rings or rings with large heads that cannot be securely held by the standard claws included with the ring engraving machine. [Compatible Models] ■ No.6700DX ■ No.6700 ■ No.3700 ■ No.1700 *Please feel free to contact us for more details.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The "Handy Ring Engraving Machine" is a product of Harp Co., Ltd., which manufactures and imports/export tools, machines, and supplies for jewelry and accessory production. It is easy to use and engraves beautifully. It is offered at an affordable price. 【Features】 ■ Easy to use and engraves beautifully ■ Comes with standard character templates *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The "Portable Ring Engraving Machine DX Type" is an engraving machine that allows you to change the engraving position to the center, front, back, two-level engraving, and curved engraving. Thanks to the ultra-compact LED lighting built into the diamond point shaft, the engraving surface is clearly and brightly visible. It comes with a beautiful steel carrying case, which can store separately sold character templates inside. 【Features】 ■ Ultra-compact LED lighting ■ Engraving surface is clearly visible and bright ■ Comes with a steel carrying case ■ Standard character templates included *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

The "Portable Ring Engraving Machine" is a compact, portable engraving machine that allows for clean engraving and easy storage. The engraving work area is brightly lit and easy to see. The movement of the diamond point is linear in the front and back, and ideally moves in a small arc relative to the inner circumference. It comes with a beautiful steel carrying case, which can store separately sold letter templates inside. 【Features】 ■ Compact and portable ■ Bright and easy-to-see engraving work area ■ Comes with a steel carrying case ■ Standard letter templates included *For more details, please feel free to contact us.

• Other processing machines
• Other machine tools
• Other surface treatment equipment

This is a micro-sized vice that fits in the palm of your hand. It can hold items normally with the jaws, and it can also grip medal-shaped objects with the round claws on top of the jaws. You can use it placed on a desk, or you can attach it to another vice for use. Additionally, using separately sold "round claws" and "rod claws" makes it even more convenient.

• Other processing machines
• Other machine tools
• Vice Clamps

It is a micro-sized vice that fits in the palm of your hand. You can clamp items normally with the jaws, and you can also hold medal-shaped objects with the round claws on top of the jaws. It can be used placed on a desk or clamped onto another vice.

• Other processing machines
• Other machine tools
• Vice Clamps

A disc with a hook-and-loop fastener (Velcro) allows for easy one-touch attachment and detachment of round sandpaper or felt buffs. It spins powerfully with a high-quality motor, enabling comfortable polishing work.

• Other processing machines
• Other surface treatment equipment
• Other machine tools

You can cut through vinyl tubes, electric wires, and hoses simply by pushing down the handle. It operates with high precision, resulting in a beautiful cut, and surprisingly, the blade of the utility knife lasts a long time. Additionally, replacement blades are easily obtainable utility knife blades, keeping running costs extremely low. Moreover, it allows for easy extension and cutting at the set length, making it perfect for small to medium lot cutting tasks.

• Other processing machines
• Plastic processing machines (cutting and rolling)
• Other laboratory equipment and containers

This is a compact type of the magnetic barrel "Kiraku Series," which boasts its unique magnetic flow performance. Although it is palm-sized, its performance is that of a genuine magnetic barrel polishing machine. Place stainless pins, water, and liquid compound into the tank, add the items you want to polish, turn on the switch, and after waiting for a while, place the tank on top of the main unit to start polishing. A clear video introduction is available on the Harp website. https://www.harp.co.jp/product/419/ *For more details, please download the PDF or feel free to contact us.

• Other processing machines
• Other surface treatment equipment
• Other machine tools

Lightweight and compact, this easy-to-use dust collector features a unique front suction design. It can be easily carried with one hand, making it convenient to handle. Ideal for micro-motor work, it also has excellent safety with an acrylic guard.

• Dust collector
• Other processing machines
• Hand polishing and filing