1″ Surfacing Bit For CNC Router, Spoilboard & Slab Flattenning, 1/4″ Shank

(2 customer reviews)


Clean up your spoilboard fast with this surfacing bit for CNC routers

  • Made for standard home-based routers
  • 1″ diameter, 1/4″ shank, carbide tipped
  • Tool library settings are in description

In stock


This 1-inch surfacing bit is used in your CNC router to surface or flatten your CNC router spoilboard (also called a spoiler board, or waste board), as well as slab flattening. The surfacing bit for CNC routers is a super-important bit to have.

The IDC Woodcraft 1-inch surfacing bit works with all brand CNC machines with a 1/4″ collet.

You’ll find the surfacing bit is a necessary bit almost immediately after you get your CNC router. This is because most spoil boards (a.k.a waste board or spoiler board) are not parallel to the router motion. So you need a flattening bit to resurface it.

Receiving your new CNC router is exciting. One of the first tasks you will want to do is level up your spoilboard for 2 reasons.

  1. Your projects will out even.
  2. You won’t cut into your spoilboard at high spots.

Spoilboard resurfacing is actually a very common thing that has to be done with new CNC routers, as well and reconditioning the surface after it has been cut into many times.

This 1″ diameter surfacing bit is made specifically for hobby and semi-professional CNC’ers. It is made to get effective clean-up on your spoilboard in one pass at high feed rates.

To read more about what a spoilboard is, read this article or watch this video about surfacing bit feeds and speeds, or this video about how a surfacing flattening bit can be used.


  • Spoilboard. or waste board leveling
  • Spoilboard resurfacing
  • Cleaning up warped project materials

Settings for this bit

  • Feed: 100 inches per minute
  • Spindle speed: 9000-12000 rpm
  • Past depth: 0.1″


  • 3 Flute carbide tipped
  • Shank 1/4″ (6.35mm)
  • Cut Diameter: 1″ (25.4mm)
  • Cut height: 1/4″ (6.35mm)

Additional information

Weight 1.4 oz
Dimensions 9 × 7 × .5 in

2 reviews for 1″ Surfacing Bit For CNC Router, Spoilboard & Slab Flattenning, 1/4″ Shank

  1. David Wilson- Melbourne Australia

    Fantastic surfacing bit, I really put it to the test to flatten a large section of Australian Red Ironbark which is extremely dense and really tough, I had my fingers crossed but the IDC surfacing bit did the job easily, an unintended but very real torture test [Fun fact – Australian Iron Bark – Eucalyptus sideroxylon – is one of the few timbers from around the world that does not float] .

    • garfro3_2skglm

      Hi David. Thank you for the comment. And it is a test like this that makes me want to say “excellence makes the difference”

  2. Douglas Mitchell

    Does a wonderful job! I surfaced my spoil board and the finished product came out really nice. No lines anywhere in the toolpath. Priced nice too.

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