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3/8″ Down-Cut Spiral Bit (AstraHP Coated)

3/8″ Spiral Down-Cut bit offers sharp edges, perfect for shallow dadoes and grooves. AstraHP Coated Solid Carbide 3/8″ cutting diameter 3/8″ shank 1-1/4″ length of cut. 3” overall length. Made in USA #row-1151571086 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_808060774 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_808060774 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_808060774 { padding-top: 2px; padding-bottom: 2px; } }

3/8″ Down-Cut Spiral Bit (AstraHP Coated) - Main image
Bits&Bits AstraHP Coated 330-DNC375 3/8" Down-cut CNC Router BitBits&Bits AstraHP Coated 330-DNC375 3/8" Down-cut CNC Router Bit
$52.13 $78.99 In stock

Category: Down-Cut CNC Bits

This 3/8-inch down-cut spiral bit from BitsBits.com features an AstraHP coating, designed for CNC routing applications where a clean top surface finish is desired. The down-cut geometry helps to press material downward during cutting, which can reduce tear-out and produce smoother edges on the top side of the workpiece.

  • Shank diameter: 3/8 inch, suitable for many CNC routers and spindle systems.
  • AstraHP coated for enhanced durability and performance in a variety of materials.
  • Down-cut spiral design helps minimize chipping and delivers a cleaner cut on the top surface.
  • Ideal for use in CNC woodworking and sign-making projects.
  • Model number: 330-DNC375.
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Customer Reviews (4.6 / 5 · 5 reviews)

Penelope U. ★★★★★

Tried this bit on some plywood and the down-cut design really kept the top edge from chipping. The AstraHP coating still looks new after a dozen passes. Exactly what I needed for clean signs.

Lily E. ★★★★★

The down-cut action on this 3/8″ bit really leaves a clean top surface—no more fuzz on my plywood projects. Took it for a long carve session and the AstraHP coating seems to be holding up perfectly.

Benjamin V. ★★★★★

The AstraHP coating on this 3/8″ bit is holding up great through a full day of plywood routing, and the down-cut keeps the top edge chip-free. My first pass came out so clean I didn't even need to sand.

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