I was going to stay out of this one - until my name was used and my work was referred to.
A CNC is a wonderful tool. And yes the CarveWrite qualifies - barely. It has it's place and you CAN do some cool things with it. I have a good friend who owns one and does some amazing things with it. The fact that you can do only small pieces means a LOT of extra work to glue up the assemblies later. There are also many limitations in regard to thickness. But my friend is also the first to admit that the first thing he is going to do when he gets the money together is to buy a REAL CNC machine.
Now I have an expensive and fast MultiCam CNC. I feel it is one of the best out there. Ours has all the bells and whistles. Vaccuum hold down, auto tool changer and a fourth axis that can handle a massive block of material. Did I mention it is FAST!
Now the truth is a shopbot or a home built machine will do pretty much everything I can do on my machine. It may not do it as quickly or accurately but pretty close.
So why spend all that extra money? Reliability and long life. You get what you pay for. I am not a mechanical guy. I don't want to think about my router and I don't want to be limited by any shortcomings. I only want to create stuff.
My new machine can do the the work six or seven times faster than I could do it by hand. It can achieve accuracy and precision I could only previously imagine. Repeatability - when I need it is instantly available. I would be hard pressed to do the work we currently do in our shop by hand. Is the high end machine worth the big bucks? It is in my book.
Check out the blog on my website to see some current pieces - done largely on the CNC without any handwork.
http://imaginationcorporation.com/journal/
I still sculpt things by hand as mentioned above - but only when it makes sense.
The program available for the Carvewrite will also limit you in a hurry. For a real CNC there are many choices, some better suited to high end work than others. It depends to some degree on the type of work you wish to do. We use EnRoute in our shop and I haven't found the limits yet. I still learn something new every single day.
Ultimately it is about passion. You will go as far and as fast as your heart allows. Having machinery that is inadequate may slow you down but it will not stop you. Those with a huge passion can do amazing work with a sharp stick.
-grampa dan
Ultimately