[davidmb]

Hi I'm interested in finding out what minimum power is required to cut say 1mm brass sheet at between 5 - 10 mm/s

[ELaser]

Not with co2, not unless you coat the stuff first, and even then, fibre is the way to go, different frequency energy, not reflected so much by the metal.

[Blackeringe]

As stated above you "can't" cut brass with a co2. However you "can't" cut wood with a fibre and I've cut 40mm thick planks in a fibre so...

But on my fibre laser I cut 1mm brass around 285mm/sec @ 2kW and stainless at 535mm/sec

Probably won't help you alot but it gives you a rough idea. =)

[davidmb]

Hi ELaser / Blackeringe,

Thanks for the replies, I'm guessing that 2kW fibre is going to be out of my pocket range, I was looking at some 200W OEM fibre units, but I'm guessing that these are not really going to touch brass sheet apart from 'engraving/etching' even at any speed ( I may be wrong, I don't know a lot about laser cutting but I am familiar with how the different lasers work ).

[ELaser]

Ask the vendor to run a sample, in *theory* 200 watts with good optics and beam quality is just enough to cut 1 mm metals, if you're patient.