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SKU: 12-327B

Infinity Tools 1/4" Shank Straight Router Bit w/ Plunge Point & Top Bearing

Regular price $26.90

The Infinity Tools 1/4" Shank Straight Router Bit with Plunge Point & Top Bearing is a versatile pattern bit built for clean, accurate template routing. The bearing mounts above the cutter on the shank, so you can place your template below the workpiece and see exactly what you're cutting. The plunge-cutting point lets you drop the bit straight into the middle of a workpiece to start interior cuts without burning. It's an essential addition to any pattern and flush-trim router bit kit.

How a top-bearing pattern bit works

With the bearing riding on top of the cutter, the bit follows a template attached beneath your stock. This top-bearing configuration is ideal for table-routing duplicate parts, signs, and curved or irregular shapes. For the cleanest results and longer bit life, rough-cut your workpiece about 1/8" larger than the template, then make the final pass with the bearing tracking the pattern.

Plunge point for interior cuts

Unlike a standard pattern bit, the plunge point lets you start cuts in the center of a panel — perfect for mortises, inlays, and cutouts — without scorching the material. You can run the bit with or without the bearing for added versatility.

Key specifications

  • Shank: 1/4"
  • Cutter diameter: 1/2"
  • Cutter height: 1"
  • Bearing diameter: 1/2"
  • Overall length (O.A.L.): 2-1/2"
  • Cutting material: Long-lasting carbide, re-sharpenable

Pairs well with

Use this bit with our router templates and jigs for repeatable parts, and explore more straight and spiral router bits for grooving and dado work. Running parts in volume? A router table package makes pattern routing safer and more accurate.

Frequently Asked Questions

Will this 1/4" shank router bit fit my router?

Yes, as long as your router accepts a 1/4" collet, which nearly all compact and full-size routers do. The bit has a 1/4" shank, a 1/2" cutter diameter, and a 1" cutter height. Browse more straight and pattern router bits.

What is a top-bearing pattern router bit used for?

It's used to copy a template's shape onto your workpiece. The bearing sits above the cutter and rides along a template attached beneath the stock, making it ideal for duplicating parts, signs, and curved shapes. See our router templates and jigs.

What does the plunge point do?

The plunge point lets you lower the bit straight down into the middle of a workpiece to begin interior cuts, such as mortises or cutouts, without burning the material. Standard pattern bits can't plunge cleanly.

Why mount the template below the workpiece?

With a top-bearing bit in a router table, the template goes underneath so the workpiece is on top where you can see it. This improves visibility and control compared with bottom-bearing flush-trim bits.

What's the difference between this and a flush-trim bit?

A flush-trim bit has its bearing at the tip (bottom), while this pattern bit has the bearing on the shank above the cutter. The top-bearing design lets you keep the template below the work. See the full flush-trim router bit collection.

Can I use this bit without the bearing?

Yes. You can run it as a plain plunge-cutting straight bit without the bearing for grooves and interior cuts, or add the bearing for template work.

How do I get the cleanest cut and longest bit life?

Rough-cut your workpiece about 1/8" oversize, then make a final light pass with the bearing following the template. Removing less material on the final pass reduces burning and extends the bit's edge life.

Is the bit made of carbide and can it be sharpened?

Yes. It uses long-lasting carbide cutting edges that can be professionally re-sharpened, so the bit delivers years of accurate service.

What projects is this bit good for?

Template-routing duplicate parts, sign making, inlay work, curved furniture components, and interior cutouts. Combine it with our router jigs and guides for repeatable results.

Should I use this bit in a router table or handheld?

Either works, but a router table is recommended for pattern routing because it gives better visibility and control when the template is mounted below the workpiece.