SpeTool 1/16 Dia 1/4 SHK upcut Spiral Router Bit Woodworking EndMill
SpeTool upcut spiral router bit with a labeled dimension diagram.
SpeTool slender spiral bit in an orange holder with close-ups of its tip and flutes.
Chart showing router machine types and sample materials for a SpeTool spiral router bit.
Examples of carved wooden plaques with emblems and personalized lettering.

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

SKU: SP-D1/4-1/16-U-FBA
Sale price$20.99 USD

Shipping calculated at checkout


An Up Cut Router Bit is designed to pull chips upward as it cuts, giving you clean bottom edges and efficient chip removal. Ideal for deep cuts, slotting, and mortising in wood, MDF, and plywood.

Excellent For Cutting:

  • MDF/HDF
  • Plywood
  • Melamine
  • Laminate
  • Softwood/Hardwood
  • Veneered Plywood

TOOL SPECS: Solid carbide, up cut spiral with 1/16" cutting diameter, 1/4" shank, 1/2" cutting length, and 2" overall length for use in routers with a 1/4" collet.

Title:None coated
55 in stock
Quantity:
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Ready to Cut Like Never Before?

Frequently Asked Questions

A helical bit that lifts chips upward, ideal for deep plunges and fast chip evacuation.

Use up-cut for deep pockets and efficient chip removal; choose down-cut when you need a splinter-free top face.

Some top-side splintering can occur; minimize it with a backer board or shallow first pass.

Excessive RPM or slow feed causes heat; sharpen or clean the bit and speed up the feed.

Clear chips with strong dust extraction or pause to vacuum; up-cut flutes already help eject debris.

Compression bits give splinter-free faces on both sides; up-cut is faster but may fray the top veneer.

Extra flutes can improve finish but require slower feed per tooth; 2-flute is a good all-round choice.

Too-deep cuts or slow chip evacuation overheat the small shank—use shallower passes and higher feed.

They’re fine if feed direction is correct and stock is clamped; expect more chip spray than in a table.

Use sharp bits, minimize tool overhang, and match feed to RPM to keep chip load steady.

  • 5 stars: 12 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Mr. Cornish
Good Quality Bit

Worked very well for hand routing w my trim router.

D
DEJ
Awesome Bit. Works Great.

I am a first time CNC user. I just bought my first one this last week and needed a smaller bit for more fine detail I was doing on a project. Knowing absolutely nothing about bits or the like, I ordered this one to give it a try. It was EXACTLY what I needed. I was cutting out a shape from 1/4 Rustic Walnut and this gave me perfect detail. I was even surprised that it cut BETTER THAN my new bits that came with my machine. The cut was so smooth and just glided right along the workpiece. I definitely would recommend, and I have already purchased other size bits!

A
A.C.
Nice bit!

It took almost 3 weeks to get here, but I have it now. However, since it was 7:39p when it arrived, I won't be using it until tomorrow. This will be used in a Shaper Origin. Hope I don't break it!
Solid carbide so should hold up well.

T
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.

A
A.C.
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
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.

M
Mark M.
Tool for the job

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

P
Paul
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.

,
,EJ
Good quality bit

I was actually surprised how well it worked on my project i did today
was kinda waiting for it to snap in half any minute but it actually did really well through out the cut
I ran it at 55 ipm wuth no issues

E
Elizabeth A Scott
This is an excellent bit!

I cannot believe the durability and longevity of this bit considering it is 1/16". Excellent bit!

A
Alice
Just go slow

Used for finishing passes. Just go slow and you wont have any problems

j
jec13
Quality Bit, Worked well

I needed to router some 1/16 channels in pine stock as channels to hold 22-gauge sheet metal for box bottoms. This bit was perfect.

SpeTool 1/16 Dia 1/4 SHK upcut Spiral Router Bit Woodworking EndMill

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

USD 20.99