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AstraHP Coated Bits & Bits 425-ST250 1/4" Low Helix CNC router bit
AstraHP Coated Bits & Bits 425-ST250 1/4" Low Helix CNC router bit
AstraHP Coated Bits & Bits 425-ST250 1/4" Low Helix CNC router bit
AstraHP Coated Bits & Bits 425-ST250 1/4" Low Helix CNC router bit
AstraHP Coated Bits & Bits 425-ST250 1/4
AstraHP Coated Bits & Bits 425-ST250 1/4
AstraHP Coated Bits & Bits 425-ST250 1/4
AstraHP Coated Bits & Bits 425-ST250 1/4

*AstraHP Coated* Bits&Bits 425-ST250C – 1/4″ Low Helix Up-Cut Spiral Bit

$38.99

Low Helix up-cut spiral bits excel in plastics, acrylics and foam, and even work well in wood and plywood. Also called ‘open helix’ or ‘slow helix’, these low helix CNC bits have less twist than a standard bit, reducing material uplift while cutting. Also features a radiused corner of 0.001″.

  • AstraHP Coated
  • Solid Carbide
  • Tip diameter: 1/4″
  • Shank diameter: 1/4″
  • Length of cut: 1″
  • Corner Radius: 0.001″
  • Overall Length: 2-1/2″
  • Made in the USA
CNC-HandRouter-RouterTable

In stock

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Expedited (2-3 Business Days) : $10.99
Next Business Day Shipping : $38.00

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SKU: 425-ST250C Categories: , , , Tag: Brand:

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

Made in the USA by Bits & Bits.

Weight 0.07 lbs
Shank

1/4"
Cut Diameter

1/4" (.25")
Cut Length

3/4"
Cut Style

Up-Cut

Speeds & Feeds

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

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New, unused in-stock tools may be returned within 30 days of delivery for a full refund. Made-to-order tools such as engraving cutters with custom tip sizes are subject to a 20% restock fee if returned. The buyer is responsible for return shipping costs unless the return is the result of our error (i.e. you received an incorrect or defective item). Beyond 30 days, we reserve the right to offer refunds or store credit at our discretion, with the exception of warranty related requests. You can also exchange any unused item for one of our other tools. You will be responsible for shipping charges on any exchanges unless in error on our part. If your order arrives damaged in any way, please email us as soon as possible at [email protected] with your order number and a photo of the condition. For more information, see our Returns and Refunds page.

For more information see our returns and refunds page..

Defective Items

We are committed to ensuring all of our products are of high quality and will replace or refund items that we determine to be defective. In the event you believe you have a defective tool, please call us or email us at [email protected]. Include your order number and as much info as you can about your setup, i.e., CNC, router, speeds and feeds, material you’re cutting, etc. In most cases of what seemed to be a defective tool, we have been able to help a customer with proper settings or techniques for efficient use.