The 8 Best spiral down Cut Flush Trim Router Bits (2023 reviews)

Like every other Freud bit, it looks great and probably cuts wonderfully. The particular size and dimensions of this bit are very well suited for template cutting when a limited shallow cutting depth is required. It has old bits that have screws which fit. The bit works great when the bearing retainer is installed properly. The router lock will vibrate loose and the router will slip down into the table so as to put the bearing off your pattern.

As with most Freud/Diablo blades and bits, this performs perfectly. It is manufactured in Italy additionally comes with bearings above and below the cutting edge, these are really two bits in one. The option of using the top or bottom bearing is a nice touch.

Why We Like This:

Cuts like a dream and doesn't bog down
Cuts very nice, low chatter thanks to the 1/2 inch collet
Great quality bit and leaves very smooth finish

Best For Hinge: Yonico spiral down Cut Flush Trim Router Bit

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate bit. The yonico spiral down cut flush trim router bit is exactly that - it's a simple bit that hits all the right notes. It is perfect to trim the inside of the bullnose on stair treads. The bearing is held on with a retainer ring that has an allen screw. This ring keeps the bearing in place and prevents it from sliding down the shank. The coating helps easily clean up any residu on the bit, the gunk comes off easily which helps prevent buildup which in turn helps maintain accuracy and no lag. The shorter depth of cut works well for using patterns with this router.

The bearing slips, so it has the potential to completely ruin the edge you're trying to square. This will only last about 5 to 6 minutes at most.

Why We Like This:

Wools well for routing hinges on doors
Has worked just fine for mortising door hinges
Good brand reputation

Best With Bottom Bearing: Yonico Top And Bottom Bearing

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Yonico line of bit come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The top & bottom bearing is a tremendous timesaver. The Yonico router bit sets feature high hook and shear angles, allowing cutters to slice smoothly into stock resulting in clean and splinter free cuts that are devoid of burn marks. It's great for thicker / harder woods.

This flush trim router bit performs well and holds its edge. The cutting edge is a fraction of an inch longer than the bearing is so it cuts slightly more than intended. It is great to have both top and bottom bearings so you route against or with the wood grain.

Why We Like This:

Well designed flush trim router bit
Really long flush trimmer, heavy duty 1/2" shank, guide bearing top and bottom
New and hot release

Best For metal: Bosch spiral down Cut Flush Trim Router Bit

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate bit. The bosch spiral down cut flush trim router bit is exactly that - it's a simple bit that hits all the right notes. This bit is intended for soft materials like wood. It offers greater precision when cutting a variety of materials, including sensitive laminates or material that can chip and break at the edge. It is made to cut wood. It features laser-engraved markings that allow for fast, easy set up and precise depth of cut. It will provide a smooth even edge. It provides chatter-free trimming and offers a solution for every professional application.

Typical edge forming router bit profiles include chamfer, rabbet, roman ogee and cove options. It cuts well, quickly, accurately and as expected.

Why We Like This:

Worked well for trimming formica laminate
Works excellently and is high quality
Durable, holding up well under use

Best Quality Bit: Whiteside Yonico Bit

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Flush trim bits use an end bearing to ride an edge and trim your project to the desired project design or template. If you need to follow a top-mounted template on something thick using a router table, this is your bit. The bit has a 2-inch cutting length, and requires the 1/2" collet. The whiteside bits also last a little longer than freud bits.

This particular bit has a 2in cutting edge. They leave a silky smooth cut and last a long time. You have to take absolutely tiny bites with a bit this size, because there's way more area engaging the cutting surface.

Why We Like This:

Top quality with no slop on the bearings
Made in the usa, high quality, and reasonably priced
Terrific value and leaves an incredible finish
Great router bit with high quality carbide cutting edges

Best For aluminum: Whiteside spiral down Cut Flush Trim Router Bit

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The whiteside spiral down cut flush trim router bit should be able to handle its purpose and duties with ease. If you need this style and size router bit these are a great choice. It is made with premium carbide. The cutting edge is flush to the bearings which produces the precise edge to your template. It allows the user to pick which side they want the template placed. The bit is very well packaged to keep from damaging the extremely sharp edges. It has a 14" shaft so it's not for heavy duty routing.

Why We Like This:

High quality bit for both edge routing and pattern routing
Excellent american made, excellent durability and accuracy
Precision ground for proper balance at high rpm
Great product for recreating vinyl post insertion holes

Best Flush Cut Bit: CMT spiral down Cut Flush Trim Router Bit

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If you are looking for a reliable bit for your daily usage, you cannot go wrong with the cmt spiral down cut flush trim router bit. Edges are very sharp, and the container it comes in is useful for storage. It cuts great and has a nice heft to it. It can be used on mdf and plywood, both produced very smooth cuts. The length of cut is one inch, 3/4-Inch Cutting Diameter and is a 14" shank. It has a design for long-lasting performance. It can be used both hand held or in a router table.

Why We Like This:

Very smooth cut high quality bit
Really nice bit, works very well to clean up the edges of your project
One of the new comers and featured product

Best For Trimming laminates: Freud spiral down Cut Flush Trim Router Bit

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We would, of course, be remiss if we didn't mention freud spiral down cut flush trim router bit for regular usage. Freud's solid carbide downcut spiral trim bits are perfect for any flush trim or pattern application, especially in abrasive materials like melamine or solid surface. The Downcut spiral produces an extra-clean top edge on delicate surfaces. The continuous spiral cutting action produces a super smooth cut. This is good for trimming laminates but not when the bottom edge needs to be clean.

The double bearing is a nice'safety' feature for the workpiece.

Why We Like This: