Amana Tool RC-2251 Spoilboard Insert Surfacing & Rabbeting Flycutter 2+2 Flute Design 2-1/2 D x 1/2 CH x 1/2 SHK Router Bit, Includes 2 Each of HMA-12 and HCK-70

Amana Tool® Item #RC-2251
Free shipping on orders $49 and up

Max RPM #RC-2251 = 19,000

Re-Ordering Insert Knives List

Included with Bit: Solid Carbide Insert Knives,
Optimal for cutting MDF
Optional General Purpose/Solid Wood
Solid Carbide Insert Knives
Optional *DLC Coated Insert Knives,
Optimal for cutting Solid Wood

Sides: HMA-12 (2) 12 x 12 x 1.5mm
Bottom: HCK-70 (2) 14 x 14 x 2mm

Sides: AMA-12 (2) 12 x 12 x 1.5mm
Bottom: RCK-70 (2) 14 x 14 x 2mm

AMA-12-DLC (2) 12 x 12 x 1.5mm
RCK-70-DLC (2) 14 x 14 x 2mm

*Diamond-Like Carbon (DLC) is a nanocomposite coating that has unique properties of natural diamond low friction, high hardness and high corrosion resistance.

Re-Ordering Torx® Screw and Torx® Key List

Included Torx® Screw
Included Torx® Key

Sides: 67110 (2)
Bottom: 67155 (2)

Sides: 5005
Bottom: 5015

vectric fusion 360 tool file toolstoday

vectric fusion 360 tool file toolstoday

MDF-Grade solid carbide insert knives included. Optional general purpose knives available below. 

Insert spoilboard surfacing & rabbeting with scorers features unique 2+2 knife design that contains two cutting flutes and two up-shear scorers, which provide a smoother finish at the bottom of the cut than traditional two-knife style router bits. Engineered with an Amana-exclusive carbide grade for the highest quality of cut, maximum cutting efficiency, and faster material removal process. Also known as a Surface Planing, Rabbeting, Flycutter, Fly Cutter, Leveler and Bed Skimming Router Bit. Read a woodworker's review of these bits and Read "Natural Art", a blog on slabbing camphor laurel wood.

Perfect for:

  • Resurfacing spoilboards using CNC
  • 2 + 2 spoilboards contain 2 bottom scorers for better performance, finer surface finish and better clearance for 90° corners
  • Planing large glued up panels using CNC
  • Surfacing and finishing wood using timber slab machines
  • Rabbeting or slotting

These industrial router bits comes complete with four (4) MDF-Grade solid carbide insert knives, each with four (4) cutting edges that allow users to rotate the knife when one side becomes dull. Designed for spoilboarding, planing & rabbeting large surface areas in the following materials:

  • MDF
  • Fiberboard
  • High Density Urethane (HDU Board)
  • Balsa Core*
  • Plastic/Acrylic**
  • Solidwood/Softwood*
  • Plywood/Chipboard*
  • Ultra-High-Molecular-Weight Polyethylene (UHMWPE)

*For optimal results and maximum insert life, replace inserts with optional general purpose knives #AMA-12 and #RCK-70 (sold separately).

**Use lower CNC spindle RPM and adjusted feed-rate to prevent Melting and adhesion of the acrylic material to the tool.

Max RPM #RC-2251 = 19,000
Max RPM #RC-2252 = 18,000
Max RPM #RC-2351 = 19,000

RC-2351: For ThermoGrip® CNC Heat Shrink Tool Holders.

RC-2251 and RC-2253: Also suitable for router sled machines, Make sure that your router sled is fully stable and squared.

The RC-2252 industrial router bit used in conjunction with the Amana Tool® Straight Plunge 45200 to square out the corners make production of MDF Shaker-style doors economical and less labor-intensive, while producing superior results.

Recommendations: For surfacing solid woods it is recommended to remove both bottom scorers.

WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to
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