Amana tool RC-2239 Insert Mini Surfacing & Rabbeting Flycutter 2+2 Flute Design 1-1/2 D x 1/2 CH x 6mm Inch SHK Router Bit, Includes 2 Each of HMA-12 and HCK-70

MDF-Grade solid carbide insert knives included. Optional general purpose knives available below.  Mini insert spoilboard surfacing & rabbeting with scorers, great for cutting tight corners. Features unique 2+2 insert 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. Perfect for: Resurfacing & Flatten spoilboards using CNC 2+2 spoilboards contain two bottom scorers for better performance, finer surface finish and better clearance for 90? corners Planing, flattening large glued up panels using CNC Surfacing and finishing wood using timber slab machines Also suitable for router sled machines, Make sure that your router sled is fully stable and squared. Rabbeting or slotting Also suitable for router sled machines, Make sure that your router sled is fully stable and squared.     These industrial router bits come 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 spoil boarding, planing & rabbeting the following materials: MDF  Fiberboard HDF/LDF High Density Urethane (HDU Board) Balsa Core* Plastic/Acrylic** Plywood/Chipboard* Solidwood/Softwood* 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 = 24,000.   Recommendations: For surfacing solid woods it is recommended to remove both bottom scorers.   Note: This tool is not designed to plunge! You must ramp down to a depth of 1/4" deep over a 20" run. Use the max RPM allowed and start with the feed rate (from the speed and feed chart), and go up until you get waves, then back down to a smooth cut/finish.