Concord Carpenter

Rikon 81-608 Buffer Review

By Robert Robillard on Tool Reviews

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Rikon 8-Inch, Low-Speed Buffer, Model #81-608 Review

The Rikon 81-608 buffer is a specialized 1/2 HP buffer designed for finesse rather than brute force. Its standout feature is the “Long Shaft” design, which extends 6-1/4″ on each side to create a massive 12-1/2″ workspace.

This wide clearance is essential for navigating awkward or oversized items—like the 100-year-old glass and brass knob sets from the historic Fannie Farmer Summer House were renovating—without the risk of bumping into the motor housing.

Controlled Speed and Performance

Unlike standard high-speed grinders, the Rikon 81-608 buffer runs at a deliberate 1,750 RPM. This lower speed is a practical choice to prevent friction from burning delicate wood finishes, melting plastics, or flinging polishing compound across the room. The cast iron induction motor is exceptionally quiet and smooth, but it does it take several seconds to reach full speed.

Old Mortise Lock | Before Photo

While it can bog down under heavy pressure, it excels as a stable, vibration-free tool for polishing. Because this is a light-to-medium duty machine, applying continuous heavy pressure will slow or bog down the motor, it performs best when used with a light touch for consistent polishing results.

Rikon 81-608 Buffer | Specifications

• Motor: 1/2 HP Induction, 120V, 2.5A, 60Hz
• Speed: 1,750 RPM (Low speed, single stage)
• Shaft Diameter: 5/8″
• Shaft Threading: 5/8″ x 11 TPI
• Shaft Extension: 6-1/4″ per side (Long shaft design)
• Total Machine Width: 22-1/2″
• Weight: 24 lbs
• Base Dimensions: 8-3/4″ x 7-3/4″

Rikon 81-608 Buffer | Hardware & Capacity

• Wheel Diameter: 8″
• Wheel Width Capacity: 1/2″ (Standard)
• Arbor Hole Requirement: 5/8″
• Construction: Cast iron base and motor housing
• Power Cord: 6-foot, 3-prong (Grounded)

Rikon 81-608 Buffer | Features

• Clearance: The extended shafts provide 12-1/2″ of total workspace between wheels to accommodate large or deep-set items like bowls or musical instruments.
• Thermal Management: The 1,750 RPM speed reduces friction heat, preventing the softening of finishes or burning of wood/plastics.
• Vibration Control: Includes four rubber feet for benchtop stability; base is pre-drilled for permanent mounting to a stand or table.
• Bearings: Sealed ball bearings for maintenance-free operation.

Restoration PRO Tips

• Wear proper PPE, a mask and use protect workbenches and surrounding areas from the compound dust – it can get messy
• Separate Wheels: Consider using different buffing wheels with different compounds or different materials. Using a brass-contaminated wheel on glass will cause scratching.
• Dress Buffing Wheel: Use a mechanical rake to “dress” the spinning cotton wheels. By holding the rake’s teeth against the bottom-front of the wheel—following the machine’s downward rotation—you strip away dried compound and debris to soften the cloth for a fresh layer without scratching delicate surfaces.
• Protection: Once the brass is polished, applying a thin layer of carnauba wax or a clear lacquer can help prevent the hardware from tarnishing again in the salty coastal air.

Stability and Versatility on the Bench

The machine features a heavy cast iron base and motor housing for added stability. While it includes four rubber feet to dampen vibration for freestanding use, we found it. Necessary to clamp it to the workbench. The base of the buffer has pre-drilled mounting holes for permanent mounting. Operating the tool is simple, utilizing a standard toggle power switch and a single-stage speed. With its standardized 5/8″ shaft, the Rikon 81-608 buffer remains a “gold standard” for restorers who need a reliable, cool-running machine for high-detail work.

Polish Compound – PRO Tip

For restoring century-old hardware like the brass and glass knob sets on our project, the following compounds are typically used:

• Brown Tripoli: Used for the initial “cut” to remove heavy tarnish, oxidation, or light surface scratches from brass.
• White Rouge: A finer compound applied after Tripoli to provide a high-luster, finish on harder metals like brass.
• Jeweler’s (Red) Rouge: The finest abrasive used for an ultra-high gloss on precious metals or delicate antique hardware.

Before | After Photo

Rikon 81-608 Buffer | Cost

The Rikon 81-608 buffer sells for approximately $149 and is available on the ACME Tools website, link: Purchase here

Included Components |Rikon 81-608 Buffer

• Two 8″ x 1/2″ Stitched Cotton Buffing Wheels
• Four 2-1/4″ Steel Flanges (two per side)
• 6-foot power cord with a standard 3-prong plug

Rikon 81-608 Buffer | Overall Impression | A Restoration work-Horse

For a project as unique as the Fannie Farmer Summer House, the Rikon 81-608 buffer provided us the exact balance of power and restraint required to handle irreplaceable antiques.

While professional knife-makers might miss a variable speed option, the fixed 1,750 RPM is the “sweet spot” for most restoration tasks, ensuring that centuries of patina are polished away without damaging the underlying material.

Before | After Photo

Backed by a 5-year warranty, it is a dependable investment for anyone looking to bring a professional, mirror-like finish to large-scale renovations or intricate shop projects.

Whether you are polishing antique brass or finishing a musical instrument, this buffer provides the clearance and cool-running operation necessary for a professional-grade finish.