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1/16 Inch Downcut CNC Router Bits 1/4 Inch Shank with Extra Long Life TAC Coating, Carbide Spiral Down Cut Wood End Mill Slot Cutting Router Bit for Woodworking

  • Based on 39 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Saturday, Apr 12
Order within 2 hours and 57 minutes
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Size: 1/16" Dia - 1/2" CL -1/4" Shank


Style: DOWN CUT


Features

  • SIZE. Downcut spiral router bit with 1/16" cutting diameter; 1/2" cutting length; 1/4" shank; 2" overall length, can be used on CNC and engraving machine.
  • TAC COATING. The TAC coating provide up to 2.5 times life than the uncoated. Higher hardness and more heat resistance, making the CNC router bit smooth stable, sturdy durable.
  • DOWNCUT spiral router bits used for smoothly downcut groove and slots, Mortises, Cycles and dados leave with clean Edge and Top surface, better than straight bits.
  • APPLICATION. This CNC End Mill Router Bits is perfect for soft woods, hard woods, Plywood, laminate, OAK, MDF, hard woods and aluminum. Perfect for 2D/3D wood carving or engraving. CNC spiral router end mill bit are Suitable for side milling, end milling, finish machining.
  • FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of 0.02mm, empowering users to achieve professional cutting quality effortlessly.

Size: 1/16" Dia - 1/2" CL -1/4" Shank


Material: Carbide


Brand: BINSTAK


Number of Flutes: 2


Package Dimensions ‏ : ‎ 4.02 x 3.43 x 0.51 inches; 0.88 ounces


Date First Available ‏ : ‎ January 22, 2025


Manufacturer ‏ : ‎ BINSTAK


Country of Origin ‏ : ‎ China


Best Sellers Rank: #22,641 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #6 in Spiral Router Bits


#6 in Spiral Router Bits:


Customer Reviews: 4.7 4.7 out of 5 stars 39 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Apr 12

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Top Amazon Reviews


  • Sharpness
Size: 1/4" Dia - 1" CL -1/4" Shank Style: COMPRESSION CUT
Seems to cut smoothly and quietly. Very sharp and you can’t beat the price for the value. I’m gonna stock up!
Reviewed in the United States on March 6, 2025 by Mikey

  • Nice, but spendy!
Size: 1/32" Dia - 1/8" CL -1/4" Shank Style: UP CUT
Tetra amorphous carbon thin film or “ta-C" is in a class of coatings sometimes referred to as Diamond Like Coating or DLC. These types of coatings, when applied correctly - which isn't exactly simple, have excellent properties like superior hardness, low friction coefficient, high temperature stability, etc. Coated tooling can be expected to last several times longer and can be used at feeds and speeds that would be unreasonable for uncoated carbide. When I saw this bit, I decided I would check it out as I have never used one this small that had a DLC. (It might be useful to know that I am an engineer and wrote a thesis on PVD.) The thickness of a coating is what (generally) dictates the color. You can expect ta:C to appear from the light rainbow hues here to almost black as it thicker (0.2 to 2 µm). It is very hard and works quite well for cutting edges. In my experience, DLC is most often applied to tooling that is used for cutting aluminum (with high Si content) to composites. Seeing it marketed for use in CNC woodworking is curious, to day the least. While it should work fine for this, the additional expense seems hard (pun intended) to justify. Unless you have your process dialed, tooling this size is much more likely to break than wear out. With wood, the range of material properties can vary a surprising amount - even over a single piece of material. Add to that the fact that there can be other, non-tree debris embedded, and you probably see what I am getting at here. With CNC, you'll probably want to run this pretty conservatively - just because it costs so much! This end mill is very nicely ground and the coating seems like it is an appropriate thickness for this. (I am not going to spend time in my lab to measure it, sorry!) My plan is to use this bit for inlay work on guitars. Having a small radius bit is useful for cleaning up corners and reducing the eventual hand work required for crisp edges. Since the actual performance of this tool will be measured over months or, hopefully, years, it is not possible to address whether it has the value to justify the price. However, if I happen to run into any problems, I will definitely update this review. In the absence of that, please assume I'm still happily cutting away! ... show more
Reviewed in the United States on February 13, 2025 by CR CR

  • Cut 300 3/8 holes in MDF on my CNC
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: UP CUT
and the bit lasted through the job. MDF is known for wearing out bits and this bit made it to the end. Not wanting to ruin an expensive American made bit on MDF, this cheap bit worked out. Not sure how much more it will cut (it was starting to burn the wood in the last few holes), so it may be toast. ... show more
Reviewed in the United States on March 7, 2025 by Bob F.

  • A Workhorse Downcut Bit That Earned Its Spot in My Rotation
Size: 1/4" Dia - 1" CL -1/4" Shank Style: DOWN CUT
When I first got into CNC routing, I was equal parts excited and overwhelmed. It’s not just cutting wood - it’s software, hardware, woodcraft, and electromechanical engineering all rolled into one, with a steep learning curve and plenty of opportunities to mess things up. My instructors told me, don’t go out and buy a massive kit of bits right away - start with the essentials and learn as you go. Naturally, I ignored that advice and did the exact opposite. Now, I’ve got a bunch of questionable bit choices rattling around in a drawer, collecting dust. But if there’s one thing I did figure out early, it’s that a 1/4” downcut spiral bit is an absolute go-to when you need a mix of material removal and clean edges. I didn’t pick up this BINSTAK TAC-coated version until recently, but I’ve used plenty of downcut bits before - so I knew what to expect. What I didn’t expect was just how much better this one would perform. ✅ Pros ✔ TAC coating noticeably improves performance – Runs cooler, reduces spindle strain, and extends bit life. ✔ 1” cutting length is perfect for 3/4” plywood – No second pass needed, keeps top edges crisp. ✔ Faster, more efficient cutting – A repeat job finished a full minute faster in a 12-minute window. ✔ More forgiving than a compression bit – No need for ultra-precise depth settings to get clean results. ✔ Solid build quality – Feels stiff and holds up under normal CNC workloads. ❌ Cons ❌ Too soon to judge long-term durability – Haven’t run it through a full lifespan test yet. ❌ Not for deep pocketing or aggressive material removal – Like all downcut bits, chip evacuation is limited in deeper cuts. Final Verdict: This One’s Staying in the Kit I haven’t put it through a torture test yet, but the early results are undeniably good. This bit runs cooler, reduces spindle strain, and maintains speed without sacrificing edge quality - all while being easier to work with than a compression bit. 📷 (See the photo below—this product is the one with the TAC coating, and you can clearly see the difference compared to another great bit. Both are brand new in the image.) 5 stars—this bit is officially in the rotation (so to speak). ... show more
Reviewed in the United States on February 19, 2025 by Daniel Patrick Daniel Patrick

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