SpeTool W04023 SC Spiral Plunge 1/16" Dia x 1/4" Shank x 1/2" Cutting Length 2" Long 2 Flute Up-Cut Router Bit

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$22.59 USD $25.98 USD Save $3.39 USD

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Cutting Direction: UP
Cutting Diameter(CD): 1/16"
Shank Diameter(SD): 1/4"
Cutting Length(CL): 1/2"
Overall Length(OVL): 2"


The Upcut spiral bit is the most popular type of spiral fluted tool. Use for grooving or slotting, for upward chip evacuation, and best finish on the bottom side of the part.  These bits allow for rapid cuts since the tool clears the chips away from the material.

Specially designed to provide an excellent finish. It can be used with handheld, table-mounted, and CNC routers.

Designed for cutting the following materials

  • Foam Board
  • Hardwood
  • Plastic
  • Softwood
  • Plywood


Safety Guidelines

BE CAREFUL. Always wear eye and ear protection along with dust masks. Avoid using bits while in loose clothing. Keep hands, body, clothing and hair away from the cutter. Do not remove safety guards, and be sure to always feed against the cutter rotation. Never use dull or damaged cutters. Disconnect power when changing bits or making adjustments, and  always leave the power disconnected when not in use. Follow all safety recommendations of the power tool manufacturer. SpeTool Company assumes no responsibility for defects, damage, or injury (direct or indirect) caused by misuse, abuse, alteration or modification
of any product (including sharpening).  

WARNING: Re-grinding of SpeTool products will produce dust of potentially hazardous ingredients. Always read and follow owner’s safety manual of all power machinery before using bits. Always use eye protection while using this or any carbide cutting product.  

WARNING: SpeTool products can expose you to chemicals including lead and/or cobalt, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.P65Warnings.ca.gov.  

WARNING: Drilling, sanding or machining wood products can expose you to wood dust, a ubstance known to the State of California to cause cancer. Avoid inhaling wood dust or use a mask or other safeguards for personal protection. For more information go to http://www.P65Warnings.ca.gov.

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Customer Reviews

Based on 12 reviews
Tom Glander
This Bit Does Excellent Work

It's small and cuts cleanly. I cut slots in roasted maple guitar tops, 1/4-inch thick tops, and the slots are perfectly routed by this bit. It's long enough to cut through the thickness, and does the job easily. Highly recommended.

Excellent small diameter bit.

Very sharp. So far so good. I use these in my CNC in soft woods and keep the speeds and feeds pretty low.

K. Johnson
Couldnfind this size in stores.

Bought for my husband who couldnt find this size in stores. Great price. Were ordering another one because he feels for the consistent use of he uses it for, it wont last. Great quality and does the job he needs it to do for his woodworking projects.

Mark M.
Tool for the job

Did exactly what it said it was going to do. Would definitely buy this again

good for cutting a saddle slot

I was a little concerned with reading reviews where the bit was already gribulated when the buyer received the bit. I know with Amazon, you can just send it back for a replacement so that's not a big deal.

The bit was nice and sharp. I use it to cut saddle slots for custom built guitars.
see how long it will last
for anybody buying 1/16", I would suggest you buy two in case one borks on you.