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1/8″ Down-Cut Spiral Bit (AstraHP Coated)

1/8″ Down-cut CNC Router bit is ideal for shallow pockets, designs and lettering on CNC machines! AstraHP Coated Solid Carbide Tip diameter: 1/8″ Shank Diameter: 1/4″ Length of cut: 5/8″ Overall Length: 2-1/2″ Also available with 1″ cut length! #row-586177658 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_926241900 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_926241900 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_926241900 { padding-top: 2px; padding-bottom: 2px; } }

1/8″ Down-Cut Spiral Bit (AstraHP Coated) - Main image
1/8″ Down-Cut Spiral BitAstraHP Coated Bits & Bits 425-DNC125 1/8" Down cut CNC Router bitAstraHP Coated Bits & Bits 425-DNC125 1/8" Down cut CNC Router bitAstraHP Coated Bits & Bits 425-DNC125 1/8" Down cut CNC Router bits
$33.74 $44.99 In stock

Category: Down-Cut CNC Bits

This 1/8-inch down-cut spiral bit features an AstraHP coating, designed for CNC routing applications where a clean top surface finish is desired. The down-cut geometry helps press material downward during cutting, which can reduce tear-out on the top edge of the workpiece.

  • Shank size: 1/8 inch, suitable for many compact CNC routers and trim routers.
  • Down-cut spiral design directs chips downward, helping to minimize fuzzing on the top surface.
  • AstraHP coating is applied to the bit for enhanced durability and performance.
  • Compatible with a variety of materials commonly used in CNC projects.
  • Model number: 425-DNC125 for easy identification.
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Customer Reviews (4.6 / 5 · 5 reviews)

Avery ★★★★★

Running this bit on some 1/4″ plywood, the down-cut action really kept the top edge splinter-free — no tear-out at all. The coating’s held up through a few dozen passes with noticeably less heat buildup than my uncoated bits.

Jason P. ★★★★★

Running this down-cut bit on my CNC for the first time, the top surface came out noticeably smoother than with my old up-cut bit. The AstraHP coating really helps clear chips, and it handled a full pass without any tear-out.

Jacob ★★★★★

The AstraHP coating seems to be doing its job—three hours of cutting plywood and the bit still looks fresh, with zero chip-out on the top edge. The down-cut geometry really keeps the workpiece pinned, which made my last production run noticeably quieter and cleaner.

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