[concepto]

please give me some suggestion to cut the chipboard without chipping.

[mcarvey]

Clamping a sacrificial piece of wood to the blowout side of the cut usually helps. Are you cutting with a table/circular saw or a router bit?

-Matt

[concepto]

im cutting with cnc router- 400.00 rpm_/feed rate ratio 7.0. i has used many type of 6mm bit such as single flute, double flute, 4 flute but all my bit was burn when i cut 2-3 pcs double side melamine chipboard 4'x8'.

[daniellyall]

you can get cutters made for what you need they up, down cut spiral bits.

[port_huon]

Is that a speed of 400 or 4000rpm? Either way, it's too low.
Try it at a much higher speed i.e. 18000rpm

[ger21]

Use a Compression Spiral.
Vortex Tool: Two Flute Upcut & Downcut Spiral (compression spiral) - Series 3100

[concepto]

I have trying 20000, 30000 and 40000 rpm for spindle speed.10000 mm/min for feed rate and 4000 for plunge rate but it make me like ****

[daniellyall]

get one off the cutters ger21 says to use run about 18000 rpm i have used these cutters they work fine the cut was made at 1500mm/sec 18000 rpm

[concepto]

alright dude... i'll try it. my bit just delivered from Australia 6mm Z2 compression spiral bit. hehehe

[ger21]

I'd use a 10-12mm bit, rather than 6mm.