Cut depths and spindal speeds to improve finsh time

[deebo]

Im having the same problem only Im cutting 25mm mdf. 110mm alphabet A to Z. Im using a 6mm spiral Leitz tool. Spindle speed set at 5000rpm and feed at 7000 although I have this slowed down to 40% as strain on tooling . Im cutting this in 2 steps but its taking over 2 hrs to cut 144 letters..boss thinks Im swinging the lead. If I speed the rpm and feed up it breaks the tool. Are my speeds correct?

[GEOFFREY]

Hi, No expert, but I cut 15mm ply and 15mm mdf at 6m/min and 18k rpm using either straight or spiral 2 flute cutters and break very few. I am of course aware that I will probably be told that I'm doing it all wrong!!! G.

[JAZZCNC]

Hi, No expert, but I cut 15mm ply and 15mm mdf at 6m/min and 18k rpm using either straight or spiral 2 flute cutters and break very few. I am of course aware that I will probably be told that I'm doing it all wrong!!! G.

Not by me Geoffrey your cutting spot on IMO.

[deebo]

But what size cutter are you using?

[GEOFFREY]

But what size cutter are you using?

6mm cutters and forgot to add that I cut in a single pass.