CNC Spoilboard Surfacing Router Bit 1/4" Shank, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking
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Availability:
Only 10 left in stock, order soon!
Arrives
Sunday, May 10
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Pattern Name: Surfacing Bit
Size: 1/4" Shank-1-3/8" Cut Dia. (2+2 Inserts)
Features
- INDUSTRIAL GRADE CNC WOOD ROUTER BIT: Super-strength steel body with anti kickback design, 4 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.
Features
- INDUSTRIAL GRADE CNC WOOD ROUTER BIT: Super-strength steel body with anti kickback design, 4 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.
Package Dimensions : 3.66 x 2.05 x 1.97 inches; 4.16 Ounces
Item model number : B216
Date First Available : December 1, 2022
Manufacturer : BINSTAK
Country of Origin : China
Best Sellers Rank: #26,871 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #27 in Edge Treatment & Grooving Router Bits
#27 in Edge Treatment & Grooving Router Bits:
Customer Reviews: 4.9 out of 5 stars 38 ratings
Size: 1/4" Shank-1-3/8" Cut Dia. (2+2 Inserts)
Material: Alloy Steel, Carbide
Brand: BINSTAK
Item Weight: 0.12 Kilograms
Cut Type: Straight Cut
Size Name: 1/4" Shank-1-3/8" Cut Dia. (2+2 Inserts)
Item Weight: 0.12 Kilograms
Cutting Diameter: 1.38 Inches
Item Diameter: 1.38 Inches
Cut Type: Straight Cut
Number of Flutes: 4
Material Type: Alloy Steel, Carbide
Brand Name: BINSTAK
Model: B216
Part Number: B216
Manufacturer: BINSTAK
Included Components: Router Bit, 4 Extra Screws, T15 Wrench
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, May 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Pattern Name: Surfacing Bit
Size: 1/4" Shank-1-1/2" Cut Dia. (2 Inserts)
Wicked sharp! Works as advertised. Rotating cutters extends life and almakes for an excellent value. Highly recommend.
Reviewed in the United States on February 9, 2026 by Rj
Pattern Name: Surfacing Bit
Size: 1/4" Shank-1-1/2" Cut Dia. (2 Inserts)
Great surfacing bit for my spoil board. I have resurfaced 4 times now and still just as sharp as the first time. Should last a long time with the four sided rotatable cutting edges. Nice quality bit
Reviewed in the United States on March 16, 2026 by Todd Webber
Pattern Name: Surfacing Bit
Size: 1/4" Shank-1-1/2" Cut Dia. (2 Inserts)
The bit worked great, right until it warped. I have an older craftsman router and the bit would only go in the collet until about 3-4 mm of the shaft below the "insert in router to the line" line was still sticking out . I figured that would be sufficient if I was careful with the amount of pressure I put on the bit. I was wrong. It worked better than any other router I've used, right up until I pushed it too fast (was working with a small oak slab, so that did not help). The shaft warped a bit and developed a distinct vibration, becoming unsafe. I put it in a modern trim router where I could get it to the "insert in router to the line" line and tightening it. The vibration went away, but the bit was then too short to do what I needed. So, if you have an old Craftsman An likely other brands), this bit is not for you. A slightly shorter shank would make this bit MUCH better.
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Reviewed in the United States on October 21, 2021 by S. K. Jones
Pattern Name: Surfacing Bit
Size: 1/4" Shank-1-1/4" Cut Dia. (2 Inserts)
Great bit at a fair price. I have used it for several hours now on my CNC and with the right speeds and feeds, it work well for getting a smooth, flat bottom in some large pockets.
Reviewed in the United States on March 3, 2026 by R. B. Lloyd
Pattern Name: Surfacing Bit
Size: 1/2" Shank-2" Cut Dia. (6 Inserts)
This surfacing bit is awesome for the price! I've probably surfaced about 200ft² of walnut, flipped the insert once, and it's still cutting nicely.
Reviewed in the United States on March 23, 2026 by D.C.
Pattern Name: Surfacing Bit
Size: 1/4" Shank-1" Cut Dia. (2 Inserts)
I will be honest, this was my first wood cutting bits with inserts. I thought it would be more economical as the Chinese surfacing bits with brazed carbide cutting tips didn't last long when cutting hard woods but now I am not so sure. I thought I'd take light cuts (.25 mm) to get the feel of the new bit but the tool chattered and gouged the workpiece. I thought maybe I needed to take deeper cuts so I tried taking a 1 mm cut on a piece of dark cherry. Not but a few minutes into the cut on my 3018 CNC router the tool chattered so bad it knocked my dust boot off, shattering it and sending pieces sailing across the room. Since losing my dust boot I have not used my router or this bit so I can't say much other than I wished I'd purchased a half dozen 1 inch surfacing bits from China instead of this bit with interchangeable inserts. Bad thing was I bought a box of inserts when I bought the bit. If I happen to find out I was not using his bit correctly in will update this review. As a retired machinist I am very familiar with metal cutters with replaceable inserts and thought I wouldn't have any problems. I ran the tool at high rpm and a low feed rate, maybe someone can tell me if I am doing something wrong? After upgrading to an 800w spindle motor the but no longer chatters and leaves a good surface finish so I raised my review from 3 to 5 stars.
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Reviewed in the United States on August 23, 2023 by morgan p
Pattern Name: Surfacing Bit
Size: 1/2" Shank-2" Cut Dia. (6 Inserts)
Very sharp and holds its edge. Used to flatten slices of hardwood log about 24” diameter. Makes a smooth cut.
Reviewed in the United States on March 13, 2026 by Amazon Customer
Pattern Name: Surfacing Bit
Size: 1/2" Shank-2" Cut Dia. (3 Inserts)
Works great on Walnut and Beech.
Reviewed in the United States on January 11, 2026 by john b