Cheap 3D software Package, that will allow me to machine .stl or.iges files?

[Nathan_Partington]

do you know of any free 3D software that may be available?

[JAZZCNC]

do you know of any free 3D software that may be available?

Here you go used with with Gmax software which is free (or used to be.!).! Very powerful software But I warn you it's very steep learning curve and not recommended for first timers.

http://www.cnc-toolkit.com/index.html

[Musht]

Free, good place to start:

http://cnc4free.org/

Low cost, relatively, Meshcam, http://www.grzsoftware.com/ 30 day fully functional free trial

http://www.deskproto.com might be worth a look.

Cheers
Adam