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Amana 51427-K 3/8 x 1-5/8 1FL Solid Carbide Spektra Up-Cut “O” Flute Router Bit 3/8″ Shank

Original price was: $153.95.Current price is: $115.47.

3/8″Dx3/8SHK UPCUT PLASTIC SPK

To be used only on CNC machines and routers with automatic feeding.Produce super clean, smooth cuts especially in acrylic materials (Plexiglas® Lucite®) other plastics and wood. Bits are made according to strict tolerances from an exclusive carbide grade and polished to a mirror finish using Amana’s unique process. Designed to eject chips up. Ideal for industrial applications and CNC machines. Right hand helix right hand cut.

Excellent for cutting:

Plastic/Acrylic
Acetal and Nylon
Acrylic Stone
Acrylonitrile Butadiene Styrene (ABS)
Aluminum Composite Material (ACM)
Alupanel®
Corian
Coroplast®**
Corrugated Plastics* such as Correx Boards and Polypropylene
Crosslinked Polyethylene (XPE, PEX, XLPE)
Delrin
Dibond®
Extruded Acrylic
Foam Board
Fomex®
Gatorfoam®***
Hard Plastic
High Density Polyethylene (HDPE)
High Density Urethane (HDU Board)
High Impact Polystyrene (HIPS)
High Impact Polystyrene (HIPS) for digital printing
High Pressure Laminates (HPL)
Hydroxy-Terminated Polyether (HTPE)
King ColorCore® The Multi-Color Engravable Polymer Sheet.
Laminate
Low Density Polyethylene (LDPE)
LubX®
Lucite®
Mechanical/Engineered Plastics
Perspex® Cast Acrylic Sheet
Plexiglas®
Poly (methyl methacrylate) (PMMA)
Polycarbonate (Lexan™)†
Polyethylene Terephthalate Glycol-Modified (PETG / PET-G)
Polyoxymethylene (POM), also known as Acetal, Polyacetal and Polyformaldehyde.
Polystyrene (PS)
PVC
Sign Foam
Sintra PVC
Solid Surface
StarBoard® (King StarBoard ‘R’) High Density Polyethylene Sheet (HDPE)
Teflon®
Thermoplastic Polyolefin (TPO)
Trespa® Meteon®****
Ultra High Molecular Weight Polyethylene (UHMWPE)
Urethane
Vinyl Flooring
Wood

*Corrugated Plastics such as Correx refers to a wide range of extruded twinwall plastic-sheet products produced from high-impact Polypropylene resin with a similar make-up to corrugated fiberboard. They are used in a variety of applications including boat building packaging signage outdoor advertising and the production of pet cages.

**A soft plastic cardboard made with super soft super flexible PVC.

***Gatorfoam® Foam Board a polystyrene foam board bonded between two layers of Luxcell® wood-fiber veneer.

****Decorative high-pressure compact laminate (HPL) with an integral surface.

†Recommendation: Use the slowest suggested feed rates and the shortest bits necessary for cutting and routing Lexan™.

Benefits of Mirror-Finish:

Razor sharp cutting edge
Effortless chip removal
Helps prevent chip re-welding
Extends tool life
Exceptional cut quality
Dissipates heat well and prevents melting

Our Spektra™ bits feature a nACo® nanocomposite coating with an extreme nanohardness and heat resistance. With a brilliant distinctively-tinted coloring nACo provides additional improvements in four critical aspects of router tooling.

nACo coating is a micro-thin ceramic coating which enables the tool’s cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality.
Coating prevents high heat and oxidation which is detrimental to cutting tool performance.
Multi-colored hues, while attractive, will dissipate upon use and yet coating will remain fully effective.
nACo offers approximately 4,500 Vickers for impressive solid hardness on cutting areas of the tool, for an increase up to 2.5 times compared to uncoated bits.

Note: Blue based color dissipates immediately upon use. nACo® nanocomposite coating will not wear off.

Maximum RPM: 35,000.

Vectric and Fusion 360 compatible tool files for 51427-K available for download, click here.

Weight	0.16 lbs

Brand

Amana Tool

Amana Tool® is an industry leader for over 40 years specializing in industrial quality solid carbide, insert carbide and carbide-tipped cutting tools for the woodworking, plastics, aluminum, composite and metal industry. They provide many solutions for manufacturers, fabricators, display and cabinet professionals as well as hobbyists. Amana Tool’s full line of industrial-quality cutting tools includes saw blades, router bits, shaper cutters, boring bits and much more.

Need This Tool Customized?

Every machining application is different. If this tool is close to what you need but not an exact fit, General Cutting Tools can help modify it for your specific job, machine, material, or production requirement.

We work with CNC shops, industrial manufacturers, tool rooms, and production facilities to provide tool modifications that improve fit, function, performance, and efficiency. Whether you need a small adjustment or a more specialized cutting tool solution, our team can review your requirements and recommend the best option.

Custom tool modifications can help reduce setup time, improve accuracy, extend tool life, solve clearance issues, and support more consistent production results.

Common Tool Customization Options

Diameter and OD Modifications

We can modify tool diameters to better match your application requirements, including cutting diameter changes, OD modifications, pilot diameter adjustments, step diameters, and shank diameter modifications.

Bore Modifications for Saw Blades

Custom saw blade bore modifications are available for hole diameter changes, pinholes, mounting holes, and keyway cutouts to help match your machine setup and cutting requirements.

Length Adjustments

Tools can be modified for specific reach, clearance, or setup needs. This may include overall length changes, flute length adjustments, reduced neck sections, extended reach designs, or shortened tools for improved rigidity.

Shank Modifications

Shank modifications can help ensure the tool fits properly in your holder, spindle, or machine setup. Common options include shank diameter changes, flats, Weldon flats, reduced shanks, and custom holding requirements.

Radius, Chamfer, and Corner Changes

We can customize corner radius, chamfer angles, edge breaks, and other profile details to meet part print requirements or improve cutting performance.

Step Tool Modifications

For applications that require multiple diameters or operations in a single tool, we can create or modify step tools to help reduce tool changes and improve production efficiency.

Flute and Cutting Edge Adjustments

Depending on the tool and application, flute length, cutting edge geometry, end cutting features, relief angles, and cutting edge shape may be modified to improve chip evacuation, cutting action, and tool performance.

Regrinding and Resharpening

Many cutting tools can be reground or resharpened to restore performance, extend tool life, and reduce replacement costs.

Custom Profiles and Special Forms

For unique part features, we can help provide special forms, custom profiles, custom radii, counterbores, countersinks, keyseat cutters, form tools, and other application-specific tooling solutions.

Material-Specific Tool Adjustments

We can help modify or recommend tooling based on the material being machined, including aluminum, brass, bronze, plastics, stainless steel, hardened steel, cast iron, composites, and other industrial materials.

Have a Drawing, Sample, or Part Print?

Send us your print, sketch, CAD file, photo, tool number, sample, or application details. For the fastest quote, include the material being cut, quantity needed, required dimensions, tolerances, and any machine or holder requirements.

Coating Options

Tool coatings can be selected or added to improve wear resistance, heat resistance, lubricity, and performance in specific materials such as steel, stainless steel, aluminum, cast iron, and high-temperature alloys.

Request a Custom Tool Modification

Need this tool changed for your application? Contact General Cutting Tools today to discuss your custom tooling needs. We can help you find the right solution for your machine, material, and production goals.

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