--- product_id: 270342109 title: "CNC Spoilboard Surfacing Router Bit, 1/4\" Shank 1\" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK" brand: "binstak" price: "$66.89" currency: USD in_stock: true reviews_count: 13 category: "Binstak" url: https://www.desertcart.us/products/270342109-cnc-spoilboard-surfacing-router-bit-1-4-shank-1-cutting store_origin: US region: United States of America --- # 4-sided carbide inserts for extended life 1/4" shank fits most routers 1" cutting diameter for precision CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK **Brand:** binstak **Price:** $66.89 **Availability:** ✅ In Stock ## Summary > 💥 Flatten like a pro, save like a boss! ## Quick Answers - **What is this?** CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK by binstak - **How much does it cost?** $66.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/270342109-cnc-spoilboard-surfacing-router-bit-1-4-shank-1-cutting) ## Best For - binstak enthusiasts ## Why This Product - Trusted binstak brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multi-Material Mastery:** Effortlessly planes hardwood, softwood, MDF, plywood, laminate, and acrylic surfaces. - • **Universal Compatibility:** 1/4" shank fits CNC, handheld, and table-mounted routers for versatile use. - • **Cost-Effective Durability:** 4-sided replaceable carbide inserts maximize lifespan and minimize replacement costs. - • **Precision Surfacing Power:** 1" cutting diameter delivers smooth, flat finishes on wood slabs and spoilboards. - • **Industrial Strength & Safety:** Super-strength steel body with anti-kickback design ensures stable, safe operation. ## Overview The BINSTAK CNC Spoilboard Surfacing Router Bit features a 1/4" shank and 1" cutting diameter with durable 4-sided carbide inserts. Designed for industrial-grade performance, it offers balanced 2-wing cutting blades and an anti-kickback steel body. Perfect for flattening wood slabs and spoilboards across various materials, this cost-effective bit extends tool life by allowing easy insert replacement, making it a top choice for professional woodworkers and CNC users. ## Description Product description BINSTAK Industrial Grade 1/4-Inch Shank CNC Spoilboard Surfacing, Planing, Slab Leveler, Surface Planer and Bed Skimming Insert Router Bits (Carbide) Industrial Grade, industrial super-strength steel body, industrial insert knives. These industrial router bits feature solid carbide inserts knives with four cutting edges that allow users to rotate the knife when one side becomes dull providing the quality finish available on woodworking tools. Exquisite woodworking cutter, precise, smooth, no burr edges planer router bit. This routing bit great for cutting large surface areas and surface planing. For fast removal of material over a large surface area leaving an improved finish at the bottom of the cut. Great for hand-making and other woodworking job - Our plaining router bits are the preferred choice of professionals and hobbyists alike, with these bits, one could make floor, cabinet door etc. Good for home and improvement. Instructions for use The Max R.P.M of 1/4 shank surfacing router bit is 18000. Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers. Please pinned it to the line of the bit shaft. Inserting the shaft into the collet too little may cause the shaft to bend. COST-EFFECTIVE INSERT BIT The surfacing router bit utilizes 4-sided solid carbide inserts. All 4 edges of carbide inserts can be used, use a screwdriver to make other blade edge outside. Replace the carbide inserts when needed, instead of replacing the whole bit. Cost effective solution compared to brazed router bits and solid carbide spiral bits. Insert Spoilboard Surfacing Router Bit 1/4 Shank Product Specification Insert Material: Heavy Duty Carbide Body Material: Super-strength Steel Color: Black Shank: 1/4" Cut Diameter: 1" Safety Instructions Please wear good protective measures and always wear eye protection Do not wear gloves to avoid hazard of getting caught in the tool and pulling your hand in to get mangled during bit spinning Examine the bits before use for cracks or chips. Do not use damaged or bull bits. Make sure bits are properly secured in collect and reach the indicator mark (“K” Mark) Max. RPM in 18000 Package includes 1 x CNC Spoilboard Surfacing Router Bit 1 x Plastic Box 2 x Extra Screw ## Features - 2-WING INSERT CNC ROUTER BIT: Shank: 1/4"; Cut Diameter: 1" ; Carbide Inserts: 12*12mm. 2-wing design, resulting in a more balanced tool while running. - INDUSTRIAL GRADE CNC WOOD ROUTER BIT: Super-strength steel body with anti kickback design, 2 cutting blades. - COST-EFFECTIVE INSERT BIT: The surfacing router bit utilizes 4-sided solid carbide inserts. All 4 edges of carbide inserts can be used, use a screwdriver to make other blade edge outside. Replace the carbide inserts when needed, instead of replacing the whole bit. Cost effective solution compared to brazed router bits and solid carbide spiral bits. - This planer router bit is perfect for wood slabs flattening, resurface or plane the top surface of the spoilboard. Used on soft and hard woods, particle board, MDF, plywood compact panel, laminate, acrylic and etc. - Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers. Such as woodworking engraving machine, trimming machine, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08SKYYN7P | | Best Sellers Rank | #10,131 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Edge Treatment & Grooving Router Bits | | Brand | BINSTAK | | Brand Name | BINSTAK | | Customer Reviews | 4.5 out of 5 stars 2,098 Reviews | | Cut Type | Spoil Board Surfacing/Bottom Cleaning | | Cutting Diameter | 1 Inches | | Cutting Length | 0.25 Inches | | Item Diameter | 1 Inches | | Item Weight | 0.19 Kilograms | | Manufacturer | BINSTAK | | Material | Alloy Steel, Carbide | | Material Type | Alloy Steel, Carbide | | Model | 1/4 insertRB 1inch | | Number of Flutes | 4 | | Part Number | 1/4 insertRB 1inch | | Size | 1/4" Shank-1" Cut Dia. (2 Inserts) | | Size Name | 1/4" Shank-1" Cut Dia. (2 Inserts) | | UPC | 686082953795 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** BINSTAK - **Cutting Length:** 0.25 Inches - **Item Weight:** 0.19 Kilograms - **Material:** Alloy Steel, Carbide - **Size:** 1/4" Shank-1" Cut Dia. (2 Inserts) ## Images ![CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK - Image 1](https://m.media-amazon.com/images/I/51S94C5LhHL.jpg) ![CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK - Image 2](https://m.media-amazon.com/images/I/61OzRmKuSdL.jpg) ![CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK - Image 3](https://m.media-amazon.com/images/I/61kYAibj9EL.jpg) ![CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK - Image 4](https://m.media-amazon.com/images/I/61-Twt9CWcL.jpg) ![CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK - Image 5](https://m.media-amazon.com/images/I/61AC8TEmiBL.jpg) ## Available Options This product comes in different **Pattern, Size** options. ## Questions & Answers **Q: Where can I buy replacement blades?** A: Dear customer, we sell original inserts. This is the link: https://www.amazon.com/dp/B087BDMCZ4 This insert is suitable for insert router bit of BINSTAK and NITOMAK. Any questions, please feel free to contact us by email. --BINSTAK Customer Services Team **Q: is there any manufacturer recommended speeds to use on a cnc?** A: Short answer no. I would google about speeds and feeds. The spindle speed and the feed rate go hand and hand. It also controls chip load. The faster something spins the faster it will need to move while cutting. Most tools will only have a max rpm limit. This tool I would stay away from its cheap. The carbide quality is horrible. The insert pockets are sloppy. **Q: How is the quality of this bit** A: Really great quality! Great value for money **Q: Anyone ever try using this like a drill bit into wood?...I go through 1" forsner bits like candy, and would love to be able to index the cutters** A: I tried that on the CNC but didn't go very well. Whenever the bit is going just vertically into the the wood it burns it. I imagine it is because there is no angle on the inserts and it was made to cut from the sides only. For surfacing and milling it is amazing. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***J on February 9, 2026* ### ⭐⭐⭐⭐⭐ Review *by M***N on April 24, 2026* ### ⭐⭐⭐⭐ Review *by S***S on October 21, 2021* --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/270342109-cnc-spoilboard-surfacing-router-bit-1-4-shank-1-cutting](https://www.desertcart.us/products/270342109-cnc-spoilboard-surfacing-router-bit-1-4-shank-1-cutting) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-18*