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1/8″ Low-Helix Up-Cut Spiral Bit (AstraHP Coated)

This bit has a low helix which allows for faster milling, excellent for milling wood, plastic and other non-ferrous materials. AstraHP Coated Shank: 1/4″ Tip diameter: 1/8″ Length of cut: 3/4″ Corner Radius: 0.001″ Overall Length: 2-1/2″ Made in USA #row-1042720464 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1583552991 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1583552991 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1583552991 { padding-top: 2px; padding-bottom: 2px; } }

1/8″ Low-Helix Up-Cut Spiral Bit (AstraHP Coated) - Main image
$29.24 $44.99 In stock

Category: 1 43 Shank Spiral Bits

Excellent for Cutting:

  • Plastic/Acrylic
  • LED Back-lit and Side-lit displays and control panels
  • Corian
  • Fiberglass
  • Corrugated Plastics such as Correx Boards and Polypropylene
  • Dibond
  • Plexiglas
  • Hard/Soft wood
  • Wood cabinetry and sign making

What is an UpCut bit?

UpCut bits allow for rapid cuts since the tool clears the chips away from the material.  While Ideal for cutting thicker materials, this type of tool is not recommended for thinner or softer materials. They are more likely to tear the top surface with the cutting edges because they’re pulling the wood fibers up while cutting. When cutting laminated materials, such as plywood with a thin top veneer, that can matter a lot. This type of bit is used whenever the best finish is needed on the bottom side of a part.

Made in the USA by Bits & Bits.

This data serves as a general guidance only.

Soft/Hard Woods/ Plywood – Spindle Speed- RPM: 18-25K  – Feed Rate – IPM : 50-100″   – Per Pass Depth: 1/16-1/8

Acrylic / Plastics – Spindle Speed- RPM: 18-22K  – Feed Rate – IPM : 50-90″  – Per Pass Depth: 1/16 – 3/32

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.2 / 5 · 5 reviews)

Benjamin ★★★★★

Cut through 3/4" acrylic like it was butter, no melting or chipping along the edges at all. The up-cut spiral clears chips really well too, so I'm not stopping every few inches to blow debris out of the groove.

Emma G. ★★★★★

The AstraHP coating really makes a difference on acrylic—no chip welding or buildup like my old uncoated bit. Clean edges on 3/8" plexiglas with zero sanding needed.

Lily D. ★★★★☆

Bought this for trimming 3mm Correx boards and acrylic display panels, and the AstraHP coating really does keep the edge cooler than the uncoated bit I was using. Docked a star because the 1/8 shank chattered a bit in my older router until I slowed the feed down.