Hello
Ger21 ... thanks for answering ...yes it's a solid carbide bits ...it's flute langth is 35 mm and it's a 8 mm diameter two flute straight bit ...
And I'm cutting a bwr (boiling water resistant) plywood of 25 mm thickness

And I have a 4x8 table cnc with 3 hp spindle which can go 18000 rpm and machine can go to 500 ipm....

Well I tried it today on plyboard with these specifications ....
Feed ...118 ipm
Spindle ....10000 rpm
Doc .... 5
Opretion ....slotting 25 mm plywood
Problem .....the tip of tool has visible black mark ..it heated up at tip
And it sounds very crazy when cut


Note ...I checked tool is ok it's new sharp and strong ...it heated up but still it's flute are not burned ..

Please suggest me ...welcome for all


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