YINGBA · CARBIDE CNC CUTTING TOOLS
Foam Cutting Router Bits
Long-reach tooling for EPS, EPE, XPS and sponge.
Tapered & flat bottom · 6 to 20 mm shanks · up to 350 mm cutting length
Quick answer: foam cutting router bits are long-reach tools with large shanks, because foam work is about depth and reach rather than fine detail. YINGBA offers a tapered engraving geometry for sculpted shapes and a flat bottom geometry for block removal and pocketing, both with cutting lengths up to 350 mm. They are used on EPS foam, EPE pearl cotton, XPS board and sponge.
Materials and machines
- Materials: EPS foam, EPE pearl cotton, XPS extruded board, sponge, light-density rigid foam, low-density tooling board
- Machines: Advertising CNC engraving machines, foam CNC engraving machines, polystyrene machining centres, vertical CNC machining centres
Feed rate, spindle speed and depth of cut must be matched to the tool diameter, material, machine rigidity and workholding. These are application-specific and are confirmed for each order.
Complete size list
Long cutting lengths and large shanks. Confirm the reach you need against your machine’s clearance when ordering.
Tapered foam engraving router bit
For sculpted shapes and relief work in foam blocks.
| Shank (mm) | Tip radius (mm) | Cutting length (mm) | Overall length (mm) |
|---|---|---|---|
| 12 | 1.5 | 100 – 150 | 200 |
| 16 | 3 | 250 – 350 | 300 – 400 |
| 20 | 3 | 250 – 350 | 300 – 400 |
Flat bottom foam router bit
For block removal, levelling and pocketing in foam.
| Shank (mm) | Cutting Ø (mm) | Cutting length (mm) | Overall length (mm) |
|---|---|---|---|
| 6 | 6 | 100 | 150 |
| 8 | 8 | 100 | 150 |
| 10 | 10 | 100 – 150 | 150 – 200 |
| 12 | 12 | 150 – 200 | 200 – 250 |
| 16 | 16 | 150 – 350 | 200 – 410 |
| 20 | 20 | 200 – 350 | 250 – 410 |
Frequently asked questions
What are foam cutting router bits used for?
Shaping and removing EPS foam, EPE pearl cotton, XPS extruded board, sponge and light-density rigid foam — typically for props, packaging models, signage and insulation shapes.
Why are foam bits so long?
Foam work is usually about depth and reach rather than fine detail, so the tools use large shanks and long cutting lengths, up to 350 mm on the largest sizes.
Tapered or flat bottom for foam?
Tapered is used for sculpted shapes and relief work; flat bottom is used for block removal, levelling and pocketing.
Do foam bits need special parameters?
Foam cuts easily, so the limiting factors are reach, rigidity and chip/dust removal rather than cutting force. Confirm parameters against your machine and foam density.
Can I order custom lengths?
Yes. Cutting diameter, cutting length and overall length can be produced to your drawing.
Related guides and tools
Need a matched tool recommendation?
Tell us the material, the operation and your machine. YINGBA will review the requirement and prepare a B2B quotation.