Feed Rates and cutters for wood panels

[jimbo_cnc]

It was my mistake to originallly say I only needed a slow machine, that's why I was offered 3500mm/min. When I know what speed I need (not what I want!) I can get a faster spec.

OK, here's the machine (1500mm version).
http://www.alibaba.com/product-detai...981060776.html

The advert for the 1500mm bed machine states up to 8000mm/min working speed. Seller has said 6000mm/min is fine, maybe 7000 for my machine. But as Jazz noted, seller has suggested it will mean going up to 32mm ballscrew.

I'm having a 3kW spindle and square rails at the moment.


edit:
I've forgotten one of my principles: always think about resale value. So an abnormally slow machine doesn't make sense there.

So, I will up the speed to 6000 ish. I need to understand the performance disadvantages of 32mm ballscrew, in case seller offers eg only 5000mm/min with 25mm screw, or 6500 with 32mm.

I guess I'm going to have to download octave unless there's an excel spreadsheet calculator around?