SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool Up cut Spiral Router Bit 1/2" SHK x 1/2" Diam Wood Cut End Mill
SpeTool W04003 SC Spiral Plunge 1/2" Dia x 1/2" Shank x 1-1/4" Cutting Length x 3" Long 2 Flute Up-Cut Router Bit

SpeTool W04003 SC Spiral Plunge 1/2" Dia x 1/2" Shank x 1-1/4" Cutting Length x 3" Long 2 Flute Up-Cut Router Bit

SKU: SP-D1/2-1/2-U-FBA
$32.99 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 1/2" cutting diameter, 1/2" shank, 1-1/4" cutting length, and 3" overall length for use in routers with a 1/2" collet.
Number of Items:1
21 in stock
Quantity:
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Ready to Cut Like Never Before?

SpeTool Up Down Cut Spiral Router bits

Spiral Bits Built for Real Woodworkers.

Clean Cuts. No Burn. Just Precision.

Solid Carbide Power You Can Trust.

Similar Size

Part No.

Cutting Dia.
(D)

 Cutting Height
(B)

Shank Dia.
(d)

Overall Length
(L)

Flute
(F)

 Coating Rec. RPM
W04001 3/8" 1-1/4" 1/2" 3" 2 15,000
*W04001-SPE-X 3/8" 1-1/4" 1/2" 3" 2 TAC 15,000
W04003 1/2" 1-1/4" 1/2" 3" 2 15,000
*W04003-SPE-X 1/2" 1-1/4" 1/2" 3" 2 TAC 15,000
W04005 1/4" 1" 1/4" 2-1/2" 2 18,000
*W04005-SPE-X 1/4" 1" 1/4" 2-1/2" 2 TAC 18,000
W04007 1/8" 1/2" 1/4" 2" 2 18,000
*W04007-SPE-X 1/8" 1/2" 1/4" 2" 2 TAC 18,000
W04010 3/8" 1-3/4" 1/2" 4" 2 15,000
W04012 1/2" 2" 1/2" 4" 2 15,000
*W04012-SPE-X 1/2" 2" 1/2" 4" 2 TAC 15,000
W04014 1/4" 1-1/4" 1/4" 3" 2 18,000
*W04014-SPE-X 1/4" 1-1/4" 1/4" 3" 2 TAC 18,000
W04016 1/4" 1" 1/4" 3" 2 18,000
W04017 1/8" 1" 1/4" 3" 2 18,000
*W04017-SPE-X 1/8" 1" 1/4" 3" 2 TAC 18,000
W04022 1/4" 2" 1/4" 4" 2 18,000
*W04022-SPE-X 1/4" 2" 1/4" 4" 2 TAC 18,000
W04023 1/16" 1/2" 1/4" 2" 2 18,000
*W04023-SPE-X 1/16" 1/2" 1/4" 2" 2 TAC 18,000
W04029 1/16" 1/4" 1/4" 2" 2 18,000
W04031 1/8" 3/4" 1/8" 1-1/2" 2 18,000
*W04031-SPE-X 1/8" 3/4" 1/8" 1-1/2" 2 TAC 18,000
W04032 3/16" 1" 1/4" 2-1/2" 2 18,000
*W04032-SPE-X 3/16" 1" 1/4" 2-1/2" 2 TAC 18,000
W04033 3/8" 1-1/4" 3/8" 3" 2 15,000
W04037 1/32" 1/8" 1/4" 2" 2 18,000
*W04037-SPE-X 1/32" 1/8" 1/4" 2" 2 TAC 18,000

*Customized sizes are acceptable

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.

Customer Reviews

Based on 5 reviews
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D
Dave

This works very well on MDF making dog holes

J
Jan,
1/2 shank 1/2”x 3”up cut router bit.

.Don’t be afraid to buy this bit. Bit is very sharp and cuts real smooth. Already bought two 1/2 x 1/2” x4” up cut router bits. Very happy.

D
David S.
Results that were better than I expected

I'm making a box joint jig and I needed a 1/2" router bit that was longer than the one I had. After searching various websites and finding router bits that were a bit too expensive for my disability income, I happened to find the SpeTool website. I found the bit I was looking for, a W04003 upcut spiral bit, and was greeted with a price that was one half to one third of the price of the other bits I found. I ordered the bit and was expecting to wait the 7 - 10 days for delivery when I received an email from the delivery company stating the part had been shipped and expected delivery was July 7, the day after I purchased it! It arrived the next day like they said it would, so I was happy that I could continue the work on my router box.
The cut that the W04003 makes has no tear out along with having sharp, well defined corners and smooth edges. The quality of the cut it makes puts my other bits to shame, but they are inexpensive bits that are purchased by people like me, someone that needs a few router bits and found them at their local big box DIY retailer. I plan on building my router bit collection to replace those other bits, and I'm sure going to be checking out SpeTool fist. It's a quality router bit at an affordable price, you can't go wron,

Thanks for your affirmation, we will do better

S
Shopper

Dont hesitate to purchase this product

S
Shopper

Great item at a great price. Used to make hdpe molds for resin casting on a makita router...really clean surface after cut much better than normal router bit. Although probably should have got down cut rather than up cut to ensure small items were drawn down onto the table. But still worked well