Yes, but where would I go about getting a old plotter from?

@Ruwan

I buy it in september 2011 on AliBabaExpress.com for 888$ with Shipping to France (Without Mach3)

The model is CNC3020T

Today, less price !  AliBabaExpress

The Soft used is Mach3

Cut Fiber and Carbon FiberThe CNC

I recently purchased myself a zenbot CNC, great service and great prices

@Monroe

cut Aluminum

I recently got a Probotix Fireball V90. It'll do the carbon fiber / delrin easily enough. 

Aluminum I hear might be possible at slow rates, but not recommended. Its not a bad price.

I was also quite interested in that one Wilfrid, I did a lot of reading and found out that the base had too much flex to be precise and that the rotor is not good enough for long run... 

I do want to buy something for the store, imagine what I can do and sell if I could cut my own fiber/carbon boards.... Alu is also a must. 

Monroe, help us out to select the perfect one, entry level in terms of budget but best in class (knowing it's a bit slow but still capable!) 

Looking at "just" cutting vector files in 2D (for now) but also basic things that these 3 axis can provide. 

Basically an all in one machine for basement with limited space. (enclosure MUST be build around these, they become less noisy and self contained debris are better with wife!) 

@Wilfred, so it can cut sheet or tubular aluminum, how about Billet?

@R_Lefebvre  Sorry, I never try with Billet

Here is is engraving a pretty thick aluminium plate.  Not quite billet.  But like Monroe said above, milling at a slow speed might work.